Hitachi DZ-GX20A Service Manual page 55

Troubleshooting > Trouble Diagnosis
Camera recorded image is abnormal
Remove the MAN circuit
board and solder a lead
wire to check points
Set to service position (A).
Yes
Is camera recorded
image output?
No
Yes
TL2002 (RG),
No
TL2004 (H2),
TL2005 (H1):
Pulses
Yes
TL2009 (V3), TL2010 (V4),
No
TL2012 (V2), TL2013 (V1):
Pulses
Yes
Replace IC1001
(CCD image sensor).
List of check points
Circuit board
Symptom
(side)
TL0523 MAN (A)
TL0525 MAN (A)
TL2001 MAN (B)
TL2002 MAN (A)
TL2004 MAN (A)
TL2005 MAN (A)
TL2009 MAN (A)
TL2010 MAN (A)
TL2012 MAN (A)
TL2013 MAN (A)
IC0502-26 MAN (B)
Yes
TL2001 (CCD_OUT1):
CCD output signal?
No
*1: 12 V DC for DZ-GX20A; 15 V DC for other models.
No
TL0523 (C15/12V):
( *1)
12V or 15V DC
Replace IC2001.
Replace IC2004.
V1 & V3 pulses V2 & V4 pulses
15
0
-7
4 - 30
Lead wire
Location on
soldered
circuit board
or not
3B Need
1B Need
4C Need not
3B Need
3B Need
3B Need
3C Need
3B Need
3C Need
3B Need
5E Need not
Replace the MAN
circuit board.
TL0525 (C8.5V):
8.5V DC
Yes
Replace D0508 or
(*2)
D0509.
*2: Replace D0508 for DZ-GX20A; D0509 for other models.
H1 & H2 pulses
3.3
0
0
-7
Replace IC0502.
No
No
IC0502-26: 7V DC
Yes
Replace Q0511.
RG pulse
13.3
10.0