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1. INTRODUCTION
This service manual contains technical information which will allow service personnel to understand and
service this model.
If the circuit is changed or modified, this information will be followed by supplementary service manual to be
filed with original service manual.
Note:
1. Adjustment procedures, Disassembly Procedures and Assembly Procedures for Mechanism Chassis are separate
volume from this service manual. / Please refer to the service manual for Z-Mechanism Chassis. (Order No.
VRD9802005C2)
2. The Model No. is indicated on the Schematic Diagram and Circuit Board Diagrams as follows.
Model No.
Indication Mark
NV-FJ621EG
(A)
NV-FJ621EGY
(B)
NV-FJ621B
(C)
——————
(D)
NV-FJ621EC/ECM/ECN
(E)
NV-FJ621ECY
(F)
2. GENERAL DESCRIPTIONS
2.1. SERVICE CAUTION
2.1.1. REPLACING IC7702/EEPROM
When the EEPROM: IC7702 is replaced, applicable model code, option code and electrical adjustment data
will not be available.
Therefore, enter and/or adjust the necessary data after replacing IC7702 by referring following procedure.
STEP1.REPLACE THE IC7702
1. Remove the C.B.A. with Mechanism unit by referring the Disassembly procedure.
2. Disconnect the AC plug and replace the IC7702.
STEP2.INPUT THE MODEL & OPTION CODE
1. Set up the applicable model code and option code by ordering the following table.
Содержание NV-FJ621B
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