CDX-DAB500A, CDX-DAB500U - Sony Car Audio Service Manual (repair manual). Page 4

NOTE  FOR  REPLACEMENT  OF  THE  USB  CONNEC-
TOR (CN903)  AND  AUX  JACK (J901)
To replace the USB connector and AUX jack requires alignment.
1.  Insert the USB connector and AUX jack into the front panel.
2.  Place the KEY board on the front panel and align the terminals 

of the USB connector and AUX jack with the holes in the KEY 
board.

3.  Solder seven terminals of the connector and three terminals of 

the jack.

TEST  DISCS
Use following TEST DISC (for CD) when this set confi rms  the 
operation and checks it.

Part No.

   

Description

3-702-101-01 DISC 

(YEDS-18), 

TEST

4-225-203-01 DISC 

(PATD-012), 

TEST

NOTE  FOR  REPLACEMENT  OF  THE  SERVO  BOARD
When repairing, the complete SERVO board should be replaced 
since any parts in the SERVO board cannot be repaired.

NOTE  FOR  REPLACEMENT  OF  THE  SENSOR  BOARD
When the SENSOR board is defective, exchange the MECHANI-
CAL BLOCK (11CA) ASSY.

EXTENSION  CABLE  AND  SERVICE  POSITION
When repairing or servicing this set, connect the jig cable (exten-
sion cable (CD mecha)) as shown below.

•  Connect the MAIN board (CN700) and the SERVO board 

(CN401) with the jig cable.

Jig cable:
Part No.

   

Description

A-1818-424-A 

EXTENSION CABLE (CD MECHA)