Philips CDR Mozart Service Manual page 16

GB 16 5. CDR Mozart
Servo Drivers Check (Focus Servo)
SERVO DRIVERS CHECK
USE FREYA2 CIRCUIT DIAGRAM 1 and 3 AND FREYA SERVO BOARD BOTTOM- AND TOP VIEW: TESTPOINTS
FOCUS SERVO
PM3392A
Moving between
1V3 and 2V
VFO
GND
CH1:500mV= MTB2.00us
PM3392A
VFO
GND
CH1:500mV= MTB2.00us
PM3392A
FOC-/FOC+
GND
CH1:50.0mV= MTB 500ms
ch1: freq= 1.61 Hz
Trouble Shooting
Switch on player
via ComPair mode
Execute "focus" tests
NOK
Check power part
Check reset and clock part
OK
Check S1V65 (=1V65) at
testpoint S9
OK
Execute "focus on" test
Check VFO signal
on testpoint S16 (TP59)
OK
Execute "focus off" test
Check VFO signal
on testpoint S16 (TP59,TP153)
OK
Check signal across FOC+/FOC-
on testpoints S17 (TP57)
and S18 (TP58) when executing "focus on"
OK
FOCUS SERVO OK
OK
FOCUS SERVO OK
NOK
Check R3002, R3065, C2054
NOK
Check MACE 7019
NOK
Check MACE 7019
NOK
Check driver 7003
Check MACE 7019
Check VAM5020
CL 16532046_012.eps
101001