Troubleshooting; Video Circuit - Hitachi DV-P250E Bedienungsanleitung

Troubleshooting

VIDEO CIRCUIT

22
NO IMAGE
ARE SIGNALS
O U T P U T F R O M V I D E O
O U T P U T T E R M I N A L ?
No
ARE SIGNALS
O U T P U T F R O M P G 2 2 0 1
pins 17,15,13,11,9,7,3
?
No
ARE SIGNALS
O U T P U T F R O M I C 2 2 0 2
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
I S V O L T A G E A T
IC2202 pin 44
(RESET) H LEVEL?
Yes
IS CLOCK IN
IC2202 pin 48 ?
Yes
REPLACE IC2202
C H E C K S I G N A L
Yes
C A B L E / M O N I T O R
C H E C K V I D E O O U T P U T
SECTOR (PG1302/J1307/
Yes
J1302/J1306/J1361) OF
R J K P w B
CHECK Q2206/Q2207/
Yes
Q2208/Q2209/Q2210/
Q2211/Q2212
CHECK IC1201/IC1101/
No
IC1601
C H E C K P O W E R
No
SUPPLY CIRCUIT
CHECK IC1601
No
No
CHECK X2201/ R1218
Chapter 1