Removal And Attaching The Boards - Sony DSR-300 Service Manual

2-11. REMOVAL AND ATTACHING THE
BOARDS
2-11-1. FP-98 Board
Point to notice when removing the FP-98 board:
In order to protect the stored data inside the board, power
line of this unit is always activated even if the power
switch is turned to off. As the data inside the FP-98 board
is backed up by the lithium battery, IC chips on the FP-98
board may damage by the usual service activity. Therefore,
be sure to remove the lithium battery inside the TC panel
before removing the FP-98 board.
1. Remove the lithium battery from the TC panel.
2. Remove the four knobs and four knob spacers.
3. Remove the right panel. (Refer to section 2-2-2.)
Point to notice when installing the knob spacers:
1. Be sure to put a knob spacer behind the knob.
2. Align the dot mark on the knob with the dot mark on
the unit.
Variable range
4. Disconnect the two flat cables (CN4 and CN8) and a
connector (CN5) from the FP-98 board.
5. Remove the six screws (B2.6 x 4) and remove the FP-
98 board.
Point to notice after replacing the FP-98 board:
Be sure to make presetting of the KY EEPROM's echo-
back data. (Refer to section 2-28-4.)
Since maintenance information are stored inside the
EEPROM on the FP-98 board, they are stored inside the
EEPROM on the DPR-99/99P board as well as an echo-
back data. To write the lost data in EEPROM on the FP-98
board after the FP-98 board replacement, carry out the KY
EEPROM ECHO BACK DATA PRESET in menu No.
752.
2-16
Knob spacers
Knobs
Lithium battery
Knob spacers
Knobs
FP-98 board
CN3
Screw
B2.6 x 4
Screw
B2.6 x 4
CN4
CN5
CN8
Screw
B2.6 x 4
DSR-300/P(E)/V1