Removing And Attaching The Boards - Sony DSR-570WS Service Manual

2-9. Removing and Attaching the
Boards
2-9-1. FP-118A Board
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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 off. As the data inside the FP-118A board
is backed up by the lithium battery, IC chips on the FP-
118A board may damage by the usual service activity.
Therefore, be sure to remove the lithium battery inside the
TC panel before removing the FP-118A 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-118A board.
5. Remove the six screws (B2.6 x 4) and remove the
FP-118A board.
6. Return the board to its original position with the
reverse procedures of removal.
Point to notice after replacing the FP-118A board:
Be sure to make presetting of the KY EEPROM's echo-
back data. (Refer to Section 2-18-4.)
Maintenance information is stored inside the EEPROM on
the FP-118A board. The same data is stored inside the
EEPROM on the HN-227 board as an echo-back data. To
write the lost data in EEPROM on the FP-118A board after
the FP-118A board replacement, carry out the KY
EEPROM ECHO BACK DATA PRESET in menu No.
752.
DSR-570WS/570WSP V1
Knob spacers
Knobs
Lithium battery
Knob spacers
Knobs
FP-118A board
CN3
Screw
B2.6 x 4
Screw
B2.6 x 4
CN4
CN5
CN8
Screw
B2.6 x 4
2-15