2562-Reported Train door indicate 'NG' d ~~~~~ 2562 Reported Train door indicate 'NG' during train Preparation.  2562 open/close doors & found A1/A4 door speed slightly slower than the other doors but still within the specification. Adjusted A1/A4 doors to synchronise with the other doors. Function test 10 times - OK. Door gauge test - OK.  Chan GF/Alan/Alcus 43833