SERVICE MANUAL
– MAIN BOARD (Conductor Side) –
Former: -11
New : -12
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CDX-757MX
US Model
Canadian Model
E Model
SUPPLEMENT-1
File this supplement with the service manual.
Subject: Change of MAIN/SWITCH/JACK boards. (Suffix-12)
(ECN-CSA06141)
Ver 1.1 2002.08
In this set, MAIN, SWITCH and JACK boards have been changed in the midway of production.
Printed wiring boards and schematic diagrams of new type, and changed parts list are described in
this supplement-1.
Refer to original service manual for other information.
• NEW/FORMER DISCRIMINATION
Former and new board can be distinguished with their suffix number the Part No. as shown in the figure below though, there
are printing error in the Part No. printed on silk-screen of MAIN boards and SWITCH boards.
MAIN Board Incorrect: 1-168-649-11, 12 Correct: 1-684-649-11, 12
SWITCH Board Incorrect: 1-164-651-11, 12 Correct: 1-684-651-11, 12
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