Hitachi DZ-GX3300E Service Manual page 62

Troubleshooting > Trouble Diagnosis
5
DZ-BX37E/BX35E/MV4000E
Remove the GSL-L
circuit board and solder
a lead wire to check
points
Set to service position (A).
No
TL7028 (C5V): 5V DC
Yes
No
TL7021 (C3V): 3V DC
Yes
IC1051C-8 No
(C15/C12V):
15V DC
Yes
IC1051C-12 (H1),
No
IC1051C-13 (H2):
Pulses
Yes
No
IC1051C-9 (RG):
Pulse
Yes
IC1051C-1 to 4
No
(V1 to V4):
Pulses
Yes
No
IC1051C-7 (CCD OUT):
CCD output signals
Yes
6
Refer to "Power does not
turn on."
Refer to "Power does not
turn on."
Refer to "Power does not
turn on."
Replace the IC2001C.
Replace the IC2001C.
Replace the IC2003C.
Replace the IC1051C
(CCD image sensor).
4 - 29
List of check points
Circuit board
Symptom
(side)
TL7021 MAN (B)
TL7028 MAN (B)
IC1051C-1 GSL-L (A)
IC1051C-2 GSL-L (A)
IC1051C-3 GSL-L (A)
IC1051C-4 GSL-L (A)
IC1051C-7 GSL-L (A)
IC1051C-8 GSL-L (A)
IC1051C-9 GSL-L (A)
IC1051C-12 GSL-L (A)
IC1051C-13 GSL-L (A)
6
Replace the GSL-L
circuit board.
No improvement
Replace the MAN
circuit board.
H1 & H2 pulses RG pulse
3.3
0
V1 & V3 pulses V2 & V4 pulses
15
0
-7.5
Lead wire
Location on
soldered
circuit board
or not
7C Need not
7C Need not
1D Need
1D Need
1D Need
1D Need
2D Need
2C Need
2C Need
1C Need
1C Need
0
-7.5