Hitachi C43-FD5000 Service Manual page 53

TROUBLE SHOOTING
CHECK DCU input ;
is Voltage at K273/LK10
(K274/LK09) 5V? (-5V?)
CHECK DCU input ;
LK07 (H.BLK)
LK08 (V.BLK)
（＊1）
NTSC 60Hz 16.7ms
PAL 100Hz 10.0ms
PAL 50Hz 20.0ms
（＊3）H.BLK
5μs
NTSC 60Hz 29.6μs
PAL 100Hz 32.0μs
PAL 50Hz 32.0μs
A
OK
...(*3)
...(*4)
OK
GND
Vp-p=2～5V
4～5V
GND
CHECK
IK01
NG
SW ＋6.3V line
QK01
CHECK
NG
DEFLECTION circuit
CHECK
RK41,42,45,46,57,58,61,62,49,50,
53,54
CY Amp (IK04,05),
（＊2）
NTSC 60Hz 16.7ms
PAL 100Hz 10.0ms
PAL 50Hz 20.0ms
（＊4）V.BLK
0.8～1.2ms
NTSC 60Hz 16.7ms
PAL 100Hz 10.0ms
PAL 50Hz 20.0ms
53
GND
Vp-p=2～5V
4～5V
GND