From: overlord@megalith.miami.fl.us (Carlos Amezaga)
Newsgroups: bit.listserv.i-amiga
Subject: RE: Amiga warning sign
Keywords: 
Distribution: world
Date: 4 Sep 92 00:48:40 EST
Organization: None

Quoted from <...unknown> by         96942392@UWWVAX.UWW.EDU:
> Hello,
> 
> Having just asked a question about this, but the person who replied did
> not send the answer to the list, here is the answer about the keycaps.
> 
> There are 4 error checks that the keyboard goes under during startup.  If any
> one of these checks fail, then the caps lock will start to blink.  The number
> of times it blinks within one second indicates a certain error.  For example,
> 2 blinks (which my Amiga at work was doing) indicated that the RAM check (I
> assume the keyboard has its own internal RAM buffer???) failed.  If you have
> access to the Hardware Manuals, look under keyboard/errors in the index.

	This test was taken from a BBS and is a bit more specific. 
Others may find it useful.  Here it is:

==============

Article 671 of comp.sys.amiga.hardware
From: sbaker@starl.miami.fl.us (Stephen Baker)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: A500 Keyboard Lockup problem (CAPS LOCK light flashing)
Date: 18 Aug 92 15:28:33 EST
Organization: Starlight BBS Miami Fl

                    Amiga startup routine
                    ---------------------

Amiga system test is a complicated set of routines which it must go through
before you can do any work on it. During the system test the Amiga is
attempting to let you know if the system is well. Here is a list of the
start-up activities:

 1. Clear all chips of old data
 2. Disable DMA and interrupts during the test.
 3. Clear the screen.
 4. Check the hardware ....checks to see if 68000 is functioning.
 5. Change screen color.
 6. Do a checksum test on all ROMS.
 7. Change screen color.
 8. Begining of system startup.
 9. Check RAM at $C0000,and move SYSBASE there
10. Test All CHIP RAM.
11. Change screen color.
12. Check that software is coming in ok.
13. Change screen color.
14. Setup CHIP RAM to receive data.
15. Link the libraries
16. Check for additional memory and link it
17. Turn the DMA and interrupts back on.
18. Start a default task.
19. Check for 68010,68020, and or 68881.
20. Check to see if thee is an exception ...processor error
21. If so do a system reset. 

During this system test the Amgia is sending vital information to the screen
with colors. If the system checks out ok, you will see the following sequence
that you have seen so meany times.

DARK GRAY:  The initial hardware tested OK. the 68000 is running               
                   and the registers are readable.

LIGHT GRAY: The software is coming in and seems OK.

WHITE:      The intialization test have passed.

If something is wrong with your system, you may see the following:

RED:    If an error was found in ROMS.
GREEN:  Error found in the CHIP RAM.
BLUE:   Error was found in the custom chips.
YELLOW: If 68000 found an error before the error trapping software (GURU) was
running.


The Keyboard has it's own processor, RAM and ROM. A selftest is peformed on
power-up in the following sequence.

1. Performs checksum on ROM's
2. Checks 64 bytes of RAM.
3. The timer is tested.
4.Performs handshake with computer and gives results of selftest.

If the keyboard does not pass the test it will notify you that it is not
working properly. This information is indicated with the blinking of the
CAPS-LOCK light.

One Blink:    Keyboard ROM check failed.
Two Blinks:   Keyboard RAM checked failed.
Three Blinks: Watch dog timer failed
Four Blinks:  A short between two row lines or special control
              keys.

If you are having problems with the Amiga, perhaps these codes will help you
and your repairman.

This article was first authored by Roy Frisque and published on the newsletter
Scanlines. Roy obtain his information from the Amiga Transactor, which is a
great resource for the Amiga.

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Reply to sbaker@starl.miami.fl.us
ORIGIN: Starlight BBS (305)/235-1005  Cutler Ridge, Fl.    (C-Net AMIGA)
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