Power Part - Philips CDR Mozart Service Manual

Servo Drivers Check (Tray Servo)
SERVO DRIVERS CHECK
USE FREYA SERVO BOARD CIRCUIT DIAGRAM 1 AND 3 AND FREYA SERVO BOARD BOTTOM- AND TOP VIEW: TESTPOINTS
TRAY SERVO
PM3392A
TRAYOUT
GND
CH1:2.00 V= MTB 500us
PM3392A
TRAYIN
GND
CH1:2.00 V= MTB 500us
PM3392A
osc. a
TR+
GNDTR+
TR-
GNDTR-
CH1:5.00 V=
CH2:5.00 V= MTB 500us
PM3392A
osc. b
TR+
GNDTR+
TR-
GNDTR-
CH1:5.00 V=
CH2:5.00 V= MTB 500us
Trouble Shooting
Switch on player
via ComPair mode
Execute "TRAY" tests
NOK
Check power part
Check reset and clock part
OK
Check S1V65 (=1V65) at
testpoint S9
OK
Execute "tray open" test
Check Tray Out signal on testpoint S19
(TP177) during command
Tray In (testpoint S20) stays at 3V2
OK
Execute "tray close" test
Check Tray In signal on testpoint S20
(TP176) during tray command
Tray Out (testpoint S19) stays at 3V2
OK
Check TR+ (testpoint S21;TP77),
TR- (testpoint S22;TP78) :
- values without commands 4V2
- values during "tray open" command (osc. a)
- values during "tray close" command (osc. b)
OK
Check signal TRAYSW at testpoint S23 (TP79) :
3V3 during commands open and close,
0V after completion
OK
TRAY SERVO OK
CDR Mozart
OK
TRAY SERVO OK
NOK
Check R3002, R3065, C2054
NOK
Check MACE 7019
NOK
Check MACE 7019
NOK
Check driver 7019
Check VAL5020
NOK
Check VAL5020
CL 16532046_015.eps
5. GB 19
101001