<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549
                                    Form 10-Q
                        Quarterly Report Under Section 13
                           or 15 (d) of the Securities
                              Exchange Act of 1934
                          ----------------------------



For the Quarter Ended
  September 30, 2000                         Commission File Number  0-19466
---------------------                        --------------------------------


                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
             ------------------------------------------------------
             (Exact name of Registrant as specified in its charter)


      Delaware                                           36-3684373
--------------------                             ----------------------------
  State or other                                 IRS Employer Identification
  jurisdiction of                                          Number
  incorporation or
  organization

1300 E. Woodfield Road, Suite 312                  Schaumburg, Illinois 60173
---------------------------------                  --------------------------
  Address of principal                                City, State, Zip Code
  executive offices

Registrant's telephone number:                            (847) 240-6200
                                                   --------------------------




     Indicate by check mark whether the Registrant (1) has filed all reports
     required to be filed by Section 13 or 15(d) of the Securities Exchange Act
     of 1934 during the preceding 12 months (or for such shorter period that the
     Registrant was required to file such reports), and (2) has been subject to
     such filing requirements for the past 90 days.


                                 (1)  Yes  x   No
                                          ---     ---
                                 (2)  Yes  x   No
                                          ---     ---
<PAGE>   2

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                                    FORM 10-Q
                    FOR THE QUARTER ENDED SEPTEMBER 30, 2000

PART I - FINANCIAL INFORMATION

Item 1.

  Index to Financial Statements

    Balance Sheets

      September 30, 2000 (unaudited)                                3

      December 31, 1999                                             4

    Statements of Revenue and Expenses (unaudited)

      For the three months ended September 30, 2000                 5

      For the three months ended September 30, 1999                 6

      For the nine months ended September 30, 2000                  7

      For the nine months ended September 30, 1999                  8

    Statements of Changes in Partners' Equity

      For the nine months ended September 30, 2000
        (unaudited)                                                 9

    Statements of Cash Flows (unaudited)

      For the nine months ended September 30, 2000                 10

      For the nine months ended September 30, 1999                 11

    Notes to Financial Statements (unaudited)                      12

Item 2.

  Management's Discussion and Analysis of
    Financial Condition and Results of Operations             13 - 15

Item 3.

  Quantitative and Qualitative Disclosures about
    Market Risk                                                    15

PART II - OTHER INFORMATION

Items 1-6.                                                         16



                                       2
<PAGE>   3
                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                                 BALANCE SHEETS
                               September 30, 2000
                                   (Unaudited)

                                       Liquidating   Continuing
                                        Limited       Limited
                                        Partners      Partners       Total
                                      ------------   ----------    ----------
ASSETS

Cash and cash equivalents              $ 121,245    $ 1,544,816   $ 1,666,061
Net investment in direct financing
  leases                                       -         29,209        29,209
Diverted and other assets, net           262,119      1,284,305     1,546,424
Datronic assets, net                           -              -             -
                                       ---------    -----------   -----------

                                       $ 383,364    $ 2,858,330   $ 3,241,694
                                       =========    ===========   ===========

LIABILITIES AND PARTNERS' EQUITY

Accounts payable and accrued
  expenses                             $   1,512    $    24,145   $    25,657
Lessee rental deposits                    10,010         49,044        59,054
                                       ---------    -----------   -----------

    Total liabilities                     11,522         73,189        84,711

Total partners' equity                   371,842      2,785,141     3,156,983
                                       ---------    -----------   -----------

                                       $ 383,364    $ 2,858,330   $ 3,241,694
                                       =========    ===========   ===========



                 See accompanying notes to financial statements

                                       3
<PAGE>   4

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                                 BALANCE SHEETS
                                December 31, 1999


                                       Liquidating   Continuing
                                        Limited       Limited
                                        Partners      Partners        Total
                                      ------------   -----------    ---------
ASSETS

Cash and cash equivalents              $ 292,607     $ 3,247,374    $ 3,539,981
Investments in commercial lease
  paper, net                                   -               -              -
Net investment in direct financing
  leases                                       -         391,584        391,584
Diverted and other assets, net           402,546       1,972,358      2,374,904
Datronic assets, net                           -               -              -
                                       ---------     -----------    -----------

                                       $ 695,153     $ 5,611,316    $ 6,306,469
                                       =========     ===========    ===========

LIABILITIES AND PARTNERS' EQUITY

Accounts payable and accrued
  expenses                             $   2,229     $    22,163    $    24,392
Lessee rental deposits                    14,172          69,439         83,611
                                       ---------     -----------    -----------

    Total liabilities                     16,401          91,602        108,003

Total partners' equity                   678,752       5,519,714      6,198,466
                                       ---------     -----------    -----------

                                       $ 695,153     $ 5,611,316    $ 6,306,469
                                       =========     ===========    ===========




                 See accompanying notes to financial statements

                                       4
<PAGE>   5

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                       STATEMENTS OF REVENUE AND EXPENSES
                  For the three months ended September 30, 2000
                                   (Unaudited)

                                      Liquidating    Continuing
                                       Limited        Limited
                                       Partners       Partners        Total
                                      -----------    ----------     ---------
Revenue:
  Lease income                        $     906      $   11,962     $  12,868
  Interest income                           398          26,889        27,287
                                      ---------      ----------     ---------

                                          1,304          38,851        40,155
                                      ---------      ----------     ---------
Expenses:
  General Partner's expense
    reimbursement                        30,226         148,100       178,326
  Professional fees                       2,381          15,306        17,687
  Other operating expenses                  702           3,439         4,141
  Provision (credit) for lease losses      (303)         16,425        16,122
                                      ---------      ----------     ---------

                                         33,006         183,270       216,276
                                      ---------      ----------     ---------

Net loss                              $ (31,702)     $ (144,419)    $(176,121)
                                      =========      ==========     =========

Net loss - General Partner            $    (317)     $   (1,444)    $  (1,761)
                                      =========      ==========     =========

Net loss - Limited Partners           $ (31,385)     $ (142,975)    $(174,360)
                                      =========      ==========     =========

Net loss per limited
   partnership unit                   $   (0.93)     $    (0.86)
                                      =========      ==========

Weighted average number of limited
   partnership units outstanding         33,858         165,901
                                      =========      ==========





                 See accompanying notes to financial statements

                                       5
<PAGE>   6

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                       STATEMENTS OF REVENUE AND EXPENSES
                  For the three months ended September 30, 1999
                                   (Unaudited)


                                      Liquidating   Continuing
                                       Limited       Limited
                                       Partners      Partners        Total
                                      -----------   ----------     ---------

Revenue:
  Lease income                         $     290    $   21,665     $   21,955
  Interest income                          3,962        37,104         41,066
                                       ---------    ----------     ----------

                                           4,252        58,769         63,021
                                       ---------    ----------     ----------

Expenses:
  General Partner's expense
    reimbursement                         30,309       194,189        224,498
  Professional fees                        3,062        25,013         28,075
  Other operating expenses                 1,416         7,031          8,447
  Credit for lease losses                 (1,426)      (46,991)       (48,417)
                                       ---------    ----------     ----------

                                          33,361       179,242        212,603
                                       ---------    ----------     ----------

Net loss                               $ (29,109)   $ (120,473)    $ (149,582)
                                       =========    ==========     ==========

Net loss - General Partner             $    (291)   $   (1,205)    $   (1,496)
                                       =========    ==========     ==========

Net loss - Limited Partners            $ (28,818)   $ (119,268)    $ (148,086)
                                       =========    ==========     ==========

Net loss per limited
   partnership unit                    $   (0.85)   $    (0.72)
                                       =========    ==========

Weighted average number of limited
   partnership units outstanding          33,858       165,901
                                       =========    ==========



                 See accompanying notes to financial statements

                                       6
<PAGE>   7

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                       STATEMENTS OF REVENUE AND EXPENSES
                  For the nine months ended September 30, 2000
                                   (Unaudited)


                                      Liquidating   Continuing
                                       Limited       Limited
                                       Partners      Partners        Total
                                      -----------   ----------     ---------

Revenue:
  Lease income                        $    5,380      $ 59,879      $ 65,259
  Interest income                          6,130       110,085       116,215
                                      ----------    ----------    ----------

                                          11,510       169,964       181,474
                                      ----------    ----------    ----------

Expenses:
  General Partner's expense
    reimbursement                        167,550       820,389       987,939
  Professional fees                       10,329        78,558        88,887
  Other operating expenses                 5,968        30,186        36,154
  Credit for lease losses                 (5,850)      (47,755)      (53,605)
                                      ----------    ----------    ----------

                                         177,997       881,378     1,059,375
                                      ----------    ----------    ----------

Net loss                              $ (166,487)   $ (711,414)   $ (877,901)
                                      ==========    ==========    ==========

Net loss - General Partner            $   (1,665)     $ (7,114)   $   (8,779)
                                      ==========    ==========    ==========

Net loss - Limited Partners           $ (164,822)   $ (704,300)   $ (869,122)
                                      ==========    ==========    ==========

Net loss per limited
   partnership unit                   $    (4.87)      $ (4.25)
                                      ==========    ==========

Weighted average number of limited
   partnership units outstanding          33,858       165,901
                                      ==========    ==========





                 See accompanying notes to financial statements

                                       7
<PAGE>   8

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                       STATEMENTS OF REVENUE AND EXPENSES
                  For the nine months ended September 30, 1999
                                   (Unaudited)



                                    Liquidating  Continuing
                                      Limited     Limited
                                      Partners    Partners       Total
                                    -----------  -----------   ----------
Revenue:
  Lease income                       $   7,307    $ 149,260    $ 156,567
  Interest income                       18,069      130,039      148,108
                                     ---------    ---------    ---------

                                        25,376      279,299      304,675
                                     ---------    ---------    ---------

Expenses:
  General Partner's expense
    reimbursement                       92,580      599,204      691,784
  Professional fees                     16,137      114,418      130,555
  Other operating expenses               4,663       23,548       28,211
  Credit for lease losses              (11,198)    (195,871)    (207,069)
  Credit for loss on
    commercial lease paper                (719)      (7,592)      (8,311)
                                     ---------    ---------    ---------

                                       101,463      533,707      635,170
                                     ---------    ---------    ---------

Net loss                             $ (76,087)   $(254,408)   $(330,495)
                                     =========    =========    =========

Net loss - General Partner           $    (761)   $  (2,544)   $  (3,305)
                                     =========    =========    =========

Net loss - Limited Partners          $ (75,326)   $(251,864)   $(327,190)
                                     =========    =========    =========

Net loss per limited
   partnership unit                  $   (2.22)   $   (1.52)
                                     =========    =========

Weighted average number of limited
   partnership units outstanding        33,858      165,901
                                     =========    =========



                 See accompanying notes to financial statements





                                       8

<PAGE>   9


                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                    STATEMENTS OF CHANGES IN PARTNERS' EQUITY
                                   (Unaudited)


<TABLE>
<CAPTION>
                                              Liquidating    Continuing
                               General          Limited       Limited        Total
                              Partner's        Partners'     Partners'      Partners'
                                Equity          Equity        Equity         Equity
                              ---------      -----------    -----------    ----------
<S>                           <C>            <C>            <C>            <C>
Balance, December 31, 1999*   $      --      $   678,752    $ 5,519,714    $ 6,198,466

  Distributions to partners          --         (140,423)    (2,023,159)    (2,163,582)
  Net loss                         (8,779)      (164,822)      (704,300)      (877,901)
  Allocation of General
    Partner's Equity                8,779         (1,665)        (7,114)          --
                              -----------    -----------    -----------    -----------

Balance, September 30, 2000   $      --      $   371,842    $ 2,785,141    $ 3,156,983
                              ===========    ===========    ===========    ===========
</TABLE>


*  Balances are net of $76,894 and $685,472 of General Partner's equity
   previously allocated to Liquidating and Continuing Limited Partners' Equity.






                 See accompanying notes to financial statements


                                       9
<PAGE>   10

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                            STATEMENTS OF CASH FLOWS
                  For the nine months ended September 30, 2000
                                   (Unaudited)


<TABLE>
<CAPTION>
                                         Liquidating    Continuing
                                           Limited        Limited
                                           Partners       Partners        Total
                                         -----------    -----------    ----------
<S>                                      <C>            <C>            <C>
Cash flows from operating activities:
  Net loss                               $  (166,487)   $  (711,414)   $  (877,901)
  Adjustments to reconcile net loss
    to net cash used in operating
    activities:
    Credit for lease losses                   (5,850)       (47,755)       (53,605)
    Changes in assets and liabilities:
      Accounts payable and
        accrued expenses                        (717)         1,982          1,265
      Lessee rental deposits                  (4,162)       (20,395)       (24,557)
                                         -----------    -----------    -----------
                                            (177,216)      (777,582)      (954,798)
                                         -----------    -----------    -----------

Cash flows from investing activities:
  Principal collections on leases              5,850        410,130        415,980
  Distribution of Diverted and
    other assets                             140,427        688,053        828,480
                                         -----------    -----------    -----------
                                             146,277      1,098,183      1,244,460
                                         -----------    -----------    -----------

Cash flows from financing activities:
  Distributions to Limited Partners         (140,423)    (2,023,159)    (2,163,582)
                                         -----------    -----------    -----------

Net decrease in cash and
  cash equivalents                          (171,362)    (1,702,558)    (1,873,920)
Cash and cash equivalents:
  Beginning of year                          292,607      3,247,374      3,539,981
                                         -----------    -----------    -----------
  End of third quarter                   $   121,245    $ 1,544,816    $ 1,666,061
                                         ===========    ===========    ===========
</TABLE>



                 See accompanying notes to financial statements



                                       10
<PAGE>   11

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
                            STATEMENTS OF CASH FLOWS
                  For the nine months ended September 30, 1999
                                   (Unaudited)

<TABLE>
<CAPTION>
                                         Liquidating    Continuing
                                           Limited        Limited
                                           Partners       Partners       Total
                                         -----------    -----------    ----------
<S>                                      <C>            <C>            <C>
Cash flows from operating activities:
  Net loss                               $   (76,087)   $  (254,408)   $  (330,495)
  Adjustments to reconcile net loss
    to net cash used in operating
    activities:
    Credit for lease losses                  (11,198)      (195,871)      (207,069)
    Credit for loss on
      commercial lease paper                    (719)        (7,592)        (8,311)
    Changes in assets and liabilities:
      Judgment receivable, net                22,590        110,684        133,274
      Accounts payable and
        accrued expenses                      (6,053)       (36,326)       (42,379)
      Lessee rental deposits                 (10,020)       (53,199)       (63,219)
                                         -----------    -----------    -----------
                                             (81,487)      (436,712)      (518,199)
                                         -----------    -----------    -----------

Cash flows from investing activities:
  Principal collections on leases             11,198        873,346        884,544
  Repayments of commercial lease
    paper                                        719          7,592          8,311
                                         -----------    -----------    -----------
                                              11,917        880,938        892,855
                                         -----------    -----------    -----------

Cash flows from financing activities:
  Distributions to Limited Partners       (1,059,342)    (1,568,750)    (2,628,092)
                                         -----------    -----------    -----------

Net decrease in cash and
  cash equivalents                        (1,128,912)    (1,124,524)    (2,253,436)
Cash and cash equivalents:
  Beginning of year                        1,476,467      4,489,249      5,965,716
                                         -----------    -----------    -----------
  End of third quarter                   $   347,555    $ 3,364,725    $ 3,712,280
                                         ===========    ===========    ===========

</TABLE>

                                       11
<PAGE>   12

                    DATRONIC EQUIPMENT INCOME FUND XIX, L.P.

                         NOTES TO FINANCIAL STATEMENTS

                               SEPTEMBER 30, 2000

                                  (Unaudited)



NOTE 1 - LIMITED PARTNERSHIP DISTRIBUTIONS:

During June 2000, the Partnership made a cash distribution to Limited Partners
who were owners of record on March 31, 2000. This distribution was made from
residual cash, which is cash available for distribution after satisfying current
Partnership liabilities and setting aside reserves against potential future
Partnership liabilities. The total distribution paid to Continuing and
Liquidating Limited Partners was $2,023,000 and $140,000, respectively. Pursuant
to the Partnership Agreement, these amounts were allocated among the Limited
Partners based on each partner's proportionate share of total partners' capital
attributable to their Class.

NOTE 2 - LITIGATION

In connection with the 1992 Ventre class action, the United States District
Court for the Northern District of Illinois entered an order on September 27,
2000 finding that Edmund J. Lopinski, Jr. had caused the Datronic Partnerships
to sustain losses of $20.0 million. Against this amount, the Court offset $10.9
million that has already been realized on behalf of the Partnerships through the
sale of Diverted and Other Assets and insurance settlements. The Court also
found that Lopinski is entitled to offset the remaining $9.1 million loss with
the proceeds previously received from the other defendants in the Ventre action
and the appraised value of the Schaumburg office building. Proceeds received
from the other defendants totaled $4.9 million, leaving $4.2 million to be
recovered from the building. During the third quarter 2000, the General Partner
received appraisals for the building indicating that its value substantially
exceeds this amount. Accordingly, the losses assessed against Lopinski have been
fully mitigated.

With this ruling, the Ventre, et al v. Datronic Rental Corp., et al class action
is closed.







                                       12

<PAGE>   13
PART I

ITEM 2.  MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND
RESULTS OF OPERATIONS

The following discussion and analysis of liquidity and capital resources covers
material changes in the Partnership's financial condition from December 31, 1999
through September 30, 2000. The discussion and analysis of results of operations
is for the three and nine month periods ended September 30, 2000 as compared to
the corresponding periods in 1999. Any capitalized term not defined herein has
been defined or discussed in the Partnership's 1999 Form 10-K.

Liquidity and Capital Resources

During the nine months ended September 30, 2000, the Partnership continued to
liquidate its assets and use its cash to pay Partnership operating expenses, pay
a distribution to Limited Partners and provide for the ultimate liquidation of
the Partnership. During this period, the Partnership's cash and cash equivalents
decreased by $1,874,000 to $1,666,000 at September 30, 2000 from $3,540,000 at
December 31, 1999. This decrease is primarily due to a distribution paid to
Limited Partners of $2,163,000 (see below) and by cash used in operations of
$955,000, partially offset by cash receipts from collections on leases of
$416,000 and $828,000 from a distribution of Diverted and other assets.

During June 2000, the Partnership made a cash distribution to Limited Partners
who were owners of record on March 31, 2000. This distribution was made from
residual cash, which is cash available for distribution after satisfying current
Partnership liabilities and setting aside reserves against potential future
Partnership liabilities. The total distribution paid to Continuing and
Liquidating Limited Partners was $2,023,000 and $140,000, respectively. Pursuant
to the Partnership Agreement, these amounts were allocated among the Limited
Partners based on each partner's proportionate share of total partners' capital
attributable to their Class.

The Partnership's principal sources of future liquidity are expected to come
from cash-on-hand and proceeds from the sale of the remaining Diverted Assets
(consisting of cash and an office building in Schaumburg, Illinois). In
addition, nominal cash is expected to be received from the remaining scheduled
lease portfolio and from delinquent lessees under payment plan arrangements. The
general partner expects that the building will be sold during the first quarter
of 2001 and the proceeds included in a subsequent distribution to Limited
Partners.





                                       13
<PAGE>   14

The Partnership's interest in the Schaumburg office building is carried on its
books at $1.5 million (see Note 5 to the Partnership's financial statements
included in the 1999 Form 10-K). At March 1993, the date LRC was appointed
general partner, the building was approximately 40% occupied. Since then,
occupancy has increased to more than 80% and the base rental rates have
increased by 75%. An appraisal received during the third quarter 2000 indicates
that the building's value has increased substantially over its book value.

After all assets are disposed of and the proceeds distributed to the Limited
Partners, the Partnership will be required to file final reports with the
Securities and Exchange Commission and the Internal Revenue Service. The general
partner expects this to occur sometime during 2001.

Results of Operations

The Partnership had net losses of $176,000 and $878,000 for the three and nine
months ended September 30, 2000 in the aggregate for all classes of partners.
This compares to net losses of $150,000 and $330,000 for the three and nine
months ended September 30, 1999. Differences in operating results between
Liquidating and Continuing Limited Partners are attributable to lease income and
expenses associated with lease investments made since the March 4, 1993
Settlement. Liquidating Limited Partners do not participate in these post
Settlement activities. Significant factors affecting overall operating results
for the three and nine month periods ended September 30, 2000 and 1999 include
the following:

Lease income:
Since August 1996, the Partnership has been in its Liquidating Phase which
prohibits investing in any new leases. Accordingly, the lease portfolio has
continued to decrease as collections are made, resulting in a continued decline
in lease income. This trend will continue as the Partnership liquidates its
remaining leases.

Interest income:
Interest income includes earnings on invested cash balances. Interest income for
2000 was less than 1999 because of lower average invested cash balances,
partially offset by an increase in interest rates.

General Partner's expense reimbursement:
General Partner's expense reimbursement includes payments to LRC for expenses it
incurred as general partner. These expenses represent expenses incurred by LRC
in its management of the day-to-day operations of the Partnership. Included in
the first quarter 2000 expense are $302,000 of insurance premiums associated
with the final wrap up of Partnership affairs and its ultimate liquidation and
dissolution.




                                       14
<PAGE>   15

Professional fees:
Professional fees for the nine months ended September 30, 2000 reflect a
decreasing level of professional services required as a result of the decrease
in the Partnership's lease portfolio and related activities.

Provision (credits) for lease losses and commercial lease paper:
This provision reflects Management's ongoing assessment of the potential losses
inherent in the lease portfolio and commercial lease paper partially offset by
collections in excess of previously reserved balances.

ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

The information called for in this disclosure is not applicable to the
Registrant.




                                       15
<PAGE>   16
PART II - OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

Reference is made to Item 3 - Legal Proceedings in the Partnership's December
31, 1999 Form 10-K for a discussion of material legal proceedings involving the
Partnership.

ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS

None.

ITEM 3.   DEFAULTS UPON SENIOR SECURITIES

None.

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

None.

ITEM 5.  OTHER INFORMATION

None.

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K


(a)  Exhibits


See Exhibit Index.

(b)  Reports on Form 8-K


None.





                                       16
<PAGE>   17
                                   SIGNATURES



Pursuant to the requirements of the Securities Act of 1934, the Registrant has
duly caused this report to be signed on its behalf by the undersigned thereunto
duly authorized, on the 14th day of November 2000.





            DATRONIC EQUIPMENT INCOME FUND XIX, L.P.
            Registrant





       By:  /s/DONALD D. TORISKY
            -------------------------
            Donald D. Torisky
            Chairman and Chief Executive Officer,
            Lease Resolution Corporation
            General Partner of
            Datronic Equipment Income Fund XIX, L.P.




       By:  /s/JEFFREY T. MCREYNOLDS
            -------------------------
            Jeffrey T. McReynolds
            Vice President and Chief Financial Officer,
            Lease Resolution Corporation
            General Partner of
            Datronic Equipment Income Fund XIX, L.P.







                                       17
<PAGE>   18
                          EXHIBIT INDEX
                          -------------


EXHIBIT NO.                   DESCRIPTION
-----------                   -----------
   27                         Financial Data Schedule, which is
                              submitted electronically to the
                              Securities and Exchange Commission
                              for information only and not filed.
















                                       18