Setting Procedure And Details Of Diagnosis - Hitachi VM-H675LA Service Manual

1.3 Setting Procedure and Details of Diagnosis

1.3.1 Occasional Defect Self-Diagnostic Function (A Mode)
(1) Setting Procedure
1) Connect (attach) a power supply (battery).
2) Set the CAM/OFF/VIDEO switch to"VIDEO".
3) Press the DATE button. [Within half a second]
4) Press the DATE and REW buttons simultaneously and
hold them for 3-5 seconds.
××,× <××.××> 200×/××/××
LOD
RSS
ESS
CFG
TAB
ME
H: 0000000002001000
0000
L: 110111180100BD00
×××/×××
(2) Results of Diagnosis
Table 1-2 summarizes the results of diagnosis and the
circuits/parts deemed to be defective in the A mode.
Part Display
Trouble RSS
sensors
RST
ESS
EST
Cylinder S30
Capstan CFG
UNL
EJT
RST
UST
EST
REW
S30
LST
STG
FWD
MP
HEC
0123456789ABCDEF
AUDD140
Table 1-2 Details of A Mode Self-Diagnosis
Results of diagnosis
The pulse from the supply reel sensor is
defective.
The pulse from the take-up reel sensor is
defective.
The pulse from the supply end sensor is
defective.
The pulse from the take-up end sensor is
defective.
The SW30/25 (CYL. FG) pulse is defective.
The CAPST. FG pulse is defective.
<Results of self-diagnosis>
The shaded items flash if they are defective.
See Table 1-2 for the results of diagnosis.
Cautions:
Do not press any buttons other than those
specified during self-diagnosis; otherwise, it
may cause a malfunction.
Only the shaded items are tested in the A mode.
Other items are ignored.
[To release]
Set the CAM/OFF/VIDEO switch to "OFF".
Press the DATE and REW buttons simultaneously.
Parts/circuits deemed to be defective
Supply reel disk
Trouble sensor (reel sensor)
IC0901
Take-up reel disk
Trouble sensor (reel sensor)
IC0901
Trouble sensors (end sensor/end LED)
Q0905
IC0901
DC-DC converter circuit (B+ line)
Trouble sensors (end sensor/end LED)
Q0905
IC0901
DC-DC converter circuit (B+ line)
Cylinder
IC0631
IC0901
DC-DC converter circuit
Capstan motor
IC0651
IC0901
DC-DC converter circuit
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