Troubleshooting > Trouble Diagnosis

(3) Setting to service position (C)

Service position (C) is mainly used for trouble diagnosis of the system of operation buttons on side case-L.

Perform trouble diagnosis using the check points on MAN-H/MAN and AEL-H/AEL circuit boards.

Set to service position (B) in advance.

1)Connect the L block to AEL-H/AEL circuit board. (See Fig. 4-7-10)

(a)L block

(b)AEL-H/AEL circuit board

(a)

1)

AEL-H/AEL LEAD

L-BLOCKCIRCUIT WIRES BOARD

SAF-H/SAF LEAD

CIRCUIT WIRES

BOARD

Fig. 4-7-9 Service Position (C)

(b)

1)

1)(c)

Fig. 4-7-10 Setting to service position (C)

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Hitachi service manual Setting to service position C, Service Position C

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