3. Troubleshooting
3-1. VIDEO CIRCUIT
NO IMAGE
ARE SIGNALS
OUTPUT FROM VIDEO
OUTPUT TERMINAL?
No
ARE SIGNALS
OUTPUT FROM PG2201 pins 17, 15, 13, 11, 9, 7, 3?
No
ARE SIGNALS
OUTPUT FROM
IC2202 pins 35, 33, 29,
28, 25, 24?
No
ARE SIGNALS IC2202 pins
14, 15, 16, 20, 21?
Yes
+5V AT IC2202
pins 46, 34, 32, 30, 27,
19, 11, 1 (VDD)?
Yes
IS VOLTAGE AT IC2202 pins 44 (RESET) H LEVEL?
Yes
IS CLOCK IN
IC2202 pin 48?
Yes
REPLACE IC2202
Yes
Yes
Yes
No
No
No
No
CHECK SIGNAL
CABLE/ MONITOR
CHECK VIDEO OUTPUT SECTOR (PG1302/ J1307/ J1302/ J1306/ J1361) OF JAK PWB
CHECK IC3301/ IC3302 of
JAK PWB
CHECK IC1201/ IC1101/ IC1601
CHECK POWER
SUPPLY CIRCUIT
CHECK IC1601
CHECK X2201/ R1218
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