Board And Encoder Retainer - Sony DSR-25 Service Manual

DSR-25
3-19. MD-76 BOARD AND ENCODER RETAINER
Disassembly: Remove them in order of 1,2,3,4,5,6,7,8,9
Screw
MD-76 board
9
Screw
7
2
FP-104
flexible board
(Six parts
are soldered.)
Screw
8
Positioning pin
Assembly: Attach them in order of 9,4,3,5,6,7,8,1,2
(Refer to the figure above or below.)
Screw
4
Positioning pin
MD-76 board
Screw
5
Solder the FP-104 flexible board
(six parts).
Temperature of tip of soldering iron: 350 ± 20 °C
Hold time: one second or shorter
6
Screw
5
1
FP-248 flexible board
(Condensation sensor)
Positioning pin
Encoder cover
Fit this claw
in the hole of
and fasten the screws.
Screw
3
Disassembly of MD-76 board
Peel off the FP-248 flexible board at the front of the chas-
sis (refer to page 5-14). Remove the six solders on the
FP-104 flexible board from the rear of the chassis. Re-
3 Screw
move the screws in order of 3 to 8 shown in the figure.
When removing the MD-76 board from the chassis, be
Encoder cover
careful not to let the sensors touch the chassis.
(A positioning
4
claw is hooked.)
Encoder disk
(Positioning is
required.)
tape A
Note: When the tape A is removed, use the new tape A for
Peel off the flexible board while being careful not to get
the sensor block dirty or damage the sensor block.
Assembly of MD-76 board
While being careful not to let the sensors touch the chas-
sis, position the two positioning pins and fasten the screws
in order of 1 to 5. Then, solder the six parts on the
removed FP-104 flexible board and position the encoder
disk. Finally, stick the FP-248 flexible board on the front
of the chassis. (Refer to page 5-14.)
Screw
1
(This screw fixes the encoder cover.)
Positioning the encoder disk
Align the mark of the disk with the v mark
printed on the board as shown in the figure.
(Be careful of the position of a.)
Positioning pin
Tape A
(Adhere a half of the tape in the peripheral of
the switches S2 and S3 on the MD-76 board
and adhere the remaining half on the mechanism
chassis.)
Screw
2
Tightening torque of MD-76 board
0.3432 ± 0.0196 N·m (3.5 ± 0.2 kg • cm)
5-20
replacement. (See the illustration below.)
FP-248 flexible board
Sensor block