Hitachi VK-S454R Service Manual page 24

Troubleshooting > Trouble Diagnosis
(4) No zoom and focus operation
IC1380-10
NG
(TL1301): 7.2V
OK
When power
NG
turned on:
TL1345:Pulse
OK
OK
TL1331 to 1334:
Pulses
NG
NG
IC1301-2,4,
24: 3V
OK
NG
IC1301-10,
15: 7.2V
OK
NG
TL1311: Pulse
OK
NG
IC1301-23: Pulse
OK
NG
IC1301-20: Pulse
OK
NG
IC1301-5: Pulse
OK
W h e n p o w e r t u r n e d
NG
o n : P G 1 3 0 1 - 1 2
( T L 1 3 3 6 ) : P u l s e
OK
P G 1 3 0 1 - 1 9 t o 2 2
OK
( T L 1 3 4 7 t o 1 3 5 0 ) :
P u l s e s
NG
NG
I C 1 3 0 2 - 2 , 4 , 2 4 : 3 V
OK
2
[Continued on next page]
The test lands and components of circuit no. 1000-1099 are
on the SP circuit board.
The test lands and components of circuit no. 1100-1499 are
L1301 faulty
on the PC circuit board.
The test lands and components of circuit no. 1500 and higher
are on the CSR circuit board.
connections of the
Lens unit faulty.
Check the 3V line
Check the 7.2V (VM)
line
IC1201 faulty
IC1201 faulty.
IC1201 faulty.
IC1201 faulty.
L e n s u n i t f a u l t y .
C h e c k t h e 3 V l i n e
Check the
NG
lens flat cable.
OK
PG1301-1 NG
Check the 3V line
(TL1346): 3V
OK
NG
TL1335: Pulse
OK
Lens unit faulty
C h e c k t h e
NG
c o n n e c t i o n s o f t h e
l e n s f l a t c a b l e .
OK
PG1301-1 NG
C h e c k t h e 3 V l i n e
(TL1346): 3V
OK
PG1301-14
NG
(TL1344):
Pulse
OK
L e n s u n i t f a u l t y .
4 - 5
Correct the
connections
of the cable.
IC1201 faulty.
R1203 faulty.
Q1201 faulty.
C o r r e c t t h e
c o n n e c t i o n s
o f t h e f l a t c a b l e .
I C 1 2 0 1 f a u l t y .
R 1 2 0 4 f a u l t y .
Q 1 2 0 1 f a u l t y .