Philips CDR Mozart Service Manual page 12

GB 12 5. CDR Mozart
5. Trouble Shooting
Power Part Check
Power Part Check
USE MOZART MAIN BOARD CIRCUIT DIAGRAM 3 AND MOZART MAIN BOARD BOTTOM-AND TOP VIEW: TEST POINTS
Trouble Shooting
Switch On
Power Supply
+12V(+/-10%) testpoint 1
+5V(+/-10%) testpoint 2
+12V_MOT testpoint 3
+5V_BE testpoint 4
NOK
-12V testpoint 5 Check IC 7202, R3222 and D6203
NOK
Check Voltage Regulator 7208
+3V3 testpoint 6
NOK
+2V5 testpoint 7 Check Voltage Regulator 7209
NOK
+8VA testpoint 8
Check Voltage Regulator 7201
NOK
+5VA testpoint 9
Check IC 6204
NOK
-8VA testpoint 10 Check IC 7200
NOK
-5VA testpoint 11 Check IC 7200 and Diode 6202
Power Part
OK
NOK
Check Power Supply Unit
Check Fuse 1211 and 1212
OK
OK
OK
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