Hitachi DZ-HS303A Service Manual page 68

Troubleshooting > Trouble Diagnosis
REC button does not operate.
Set to service position (A).
No
TL7037 (REC_KEY):
(*1)
0V
Yes
*1: When REC button is pressed
Replace the MAN
circuit board.
Zoom lever does not operate.
Yes
Can zoom be operated
by remote control?
No
Reconnect the flat cable
of lens block to the
GSL-3M/L circuit board.
No
Does zoom level
normal operate?
Yes
END
Date or time is not set.
Yes
Voltage at backup
battery: 2.7V more?
No
Replace the backup
battery.
List of check points
Circuit board
Symptom
(side)
TL7037 MAN (B)
REC button faulty:
Replace the rear case.
Zoom lever faulty:
Replace the rear case.
Replace the lens unit and
GSL-3M/L circuit board.
No improvement
Replace the LMF-H/L
circuit board
4 - 35
Lead wire
Location on
soldered
circuit board
or not
8F Need not
Autofocus does not operate.
Does manual focus
operate?
No
Reconnect the flat cable
of lens block to the
GSL-3M/L circuit board.
Does autofocus
normal operate?
Yes
END
Replace the SDL
circuit board
Yes
Replace the MAN
circuit board.
No
Replace the lens unit and
GSL-3M/L circuit board.
No improvement
Replace the MAN
circuit board