Trouble Diagnosis; Selecting Service Position - Hitachi DZ-MV350A Service Manual

Troubleshooting > Trouble Diagnosis

4-7 Trouble Diagnosis

4-7-1 Selecting service position

For trouble diagnosis, with a few exceptions it is necessary to disassemble the DZ-MV350A and set it
to the service position.
There are four types of service position (A)-(D) as shown in the figures below.
Refer to Table 4-7-1 and select the appropriate service position for the defective symptom.
Fig. 4-7-1 Service Position (A)
MAN CIRCUIT
BOARD
Fig. 4-7-3 Service Position (C)
AEL
CIRCUIT
BOARD
Fig. 4-7-4 Service Position (D)
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Fig. 4-7-2 Service Position (B)
AEL CIRCUIT
BOARD
SAF
CIRCUIT
BOARD
LCD
CIRCUIT
MAN BOARD
CIRCUIT
BOARD
FULCRUM
BLOCK
MAN
CIRCUIT
BOARD
AEL CIRCUIT
BOARD