Preparations; Discharging Of The Flashlight Power Supply - Sony DSC-S75 Service Manual

1-1-2.

Preparations

Note 1: For details of how remove the cabinet and boards, refer
to "2. DISASSEMBLY".
Note 2: When performing only the adjustments, the lens block
and boards need not be disassemble.
1) Connect the equipment for adjustments according to Fig. 5-1-
5.
2) Connect the Adjusting remote commander to SY-68 board
CN401 via CPC-9 jig (J-6082-393-C). (See Fig. 5-1-3)
Note 3: Setting the "Forced CAMERA mode power ON" Mode
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 01, and press
the PAUSE button of the adjusting remote com-
mander.
The above procedure will enable the camera power
to be turned on. After completing adjustments, be
sure to exit the "Forced CAMERA mode power ON
Mode".
Note 4: Exiting the "Forced CAMERA mode power ON Mode"
1) Select page: 0, address: 01, and set data: 01.
2) Select page: D, address: 10, set data: 00, and press
the PAUSE button of the adjusting remote com-
mander.
3) Select page: 0, address: 01, and set data: 00.
1-1-3.

Discharging of the Flashlight Power Supply

The capacitor which is used as power supply of flashlight is charged
with 200 V to 300 V voltage. Discharge this voltage before start-
ing adjustments in order to protect service engineers from electric
shock during adjustment.
Discharge procedure
1. Press the FLASH button (KY-55 board S933 (CONTROL UP))
and turn off the FLASH LED (SY-68 board D404).
2. Fabricate the discharging jig as shown in Fig. 5-1-5 locally by
yourself. Connect the discharging jig to the positive (+) and
negative (–) terminal of the flash voltage charge capacitor. Al-
low ten seconds to discharge the voltage.
Fig. 5-1-4
CPC-9 jig (J-6082-393-C)
(18p flexible board)
(Note 1, 2)
R:1 kΩ/1 W
SY-68 BOARD
(Part code:
CN401
1-215-869-11)
Capacitor
5-4
Pattern box
L
Front of the lens
L=About 90 cm
Fig. 5-1-2
CPC
cover
1
18
Note 1: Don t use the 12 pin flexible board of CPC-9 jig.
It causes damage to the unit.
Note 2: The old CPC-9 jig (Parts code: J-6082-393-B)
cannot be used, because it cannot operate
the adjusting remote commander.
Fig. 5-1-3
Wrap insulating tape.
Fig. 5-1-5
1 kΩ/1 W