MEX-R1 - Sony Car Audio Service Manual (repair manual). Page 4

4

When connecting or disconnecting the flexible board of the optical
pick-up to or from the CN2 of the SERVO board, follow the
procedure given below.

When soldering the short lands, solder within 5 seconds at the
temperature of soldering iron below 300

°

C.

1. Solder the lands 3 and 2 to short.
2. Solder the lands 1 and 2 to short.
3. Disconnect the flexible board. (Unsolder the shorted lands)

1. Make sure that the lands 1, 2, and 3 of the flexible board to be

connected are soldered to short. 

(*1)

2. Connect the flexible board to the CN2 of the SERVO board.
3. Unsolder the lands 1 and 2. 

(*2)

4. Unsolder the lands 3 and 2. 

(*2)

5. Make sure that the respective lands are open surely.

*1)

If the lands concerned are not soldered to short, first solder the lands
3 and 2, and then lands 1 and 2 to short in this order.

*2)

When unsoldering the lands, move the soldering iron in bottom to
top direction in Figure 1 so that the solder runs away into the land 4
(solder reservoir) for easy unsoldering.

This set detects whether the front panel is opened or closed by using
the S961 of the BASE board. If the BASE board is disconnected,
the S961 is turned off (panel closed status) and the disc is not ejected.
To  perform the disc ejecting operation with the BASE board
disconnected, turn on the S961.

If the mounted MAIN board was replaced, be sure refer to Technical
News published separately.

When repairing or servicing this set, connect the jig (extension cable)
as shown below.

•

Connect the MAIN board (CN101) and the SERVO board

(CN3) with the extension cable (Part No. J-2502-094-1).