Disassembly/Reassembly For Enabling Service Position - Hitachi DZ-MV380A(K) Service Manual

Troubleshooting > Trouble Diagnosis

4-7-2 Disassembly/reassembly for enabling service position

Prohibition
Disconnect the AC adapter/charger of battery pack from the DZ-MV380A.
The DZ-MV380A has a built-in laser emitter block. Do not look into it: If Laser beam strikes your
eye, it could cause serious damage.
To set to service position (A), (B) or (C), remove the following components, referring to "5.
Disassembly and Reassembly":
a) Hood, Filter Piece, and Lens Cover (Fig. 5-3-2)
b) Eyecup, SAF Circuit Board, and L Block (Figs. 5-3-3, 5-3-4)
c) Front Block, FAF Circuit Board, and R Block (Fig. 5-3-5)
d) AEL and MAN Circuit Boards (Fig. 5-3-13)
Information:
Numbers in figures are step numbers for setting procedure.
(1) Setting to service position (A) (Fig. 4-7-5)
Refer to Table 4-7-1 and the MAN circuit board diagram: Solder a lead wire of approx. 10 cm to the
check point that corresponds to the symptom (except for terminals of IC or connector/plug).
1) Assemble the MAN circuit board into R block.
2) Connect the DRF circuit board to MAN circuit board.
3) Connect the SEN circuit board to MAN circuit board.
4) Connect all the connectors on MAN circuit board.
Note:
Assemble the MAN circuit board independently
into R block only when setting to service
position (A). During normal assembly, or when
setting to service position (B), first be sure to
connect the AEL circuit board to MAN circuit
board, and then assemble them into R block.
If the AEL circuit board is connected to MAN
circuit board that is already assembled in R
block, connection error may occur, or the circuit
boards or frame could be damaged.
Information:
No button or joystick operation on unconnected
L block can be performed.
DRF CIRCUIT
SEN CIRCUIT
BOARD
BOARD
1
R BLOCK
Fig. 4-7-5 Setting to Service Position (A)
4 - 3
2
3
4
MAN CIRCUIT
4
BOARD
4-1
4-3
4-2