6-6
HDW-750/750CE V1
6-3. Replacement of the Circuit Boards inside the CCD Unit
n
.
The replacement procedure of the circuit boards inside the CCD unit is common to
all models except for a few board names.
The description uses the board names of the HDW-750 serial No. 10000 series.
Read this description with appropriate board names for other models.
Refer to “1-1-1. Circuit Configuration and Locations of the Printed Wiring
Boards” for the board used in each model.
.
Order of steps of replacement is shown by the numbers in the illustration.
1. Remove the outside panel assembly. (Refer to Section 1-4.)
2. Open the inside panel assembly (Refer to Section 1-5.)
3. Remove the front assembly. (Refer to Section 6-1.)
4. Removing the DR-433 board
(1) Remove the connector (CN3) on the DR-433 board.
(2) Remove soldering connected to the CCD ground sheet (IN).
(3) Remove the two precision screws (P1.4
x
3.5) and the board spacer.
(4) Loosen the connection between CN1 on the CN-2037 board and CN1 on the
TG-219 board, and remove the DR-433 boa rd.
5. Removing the TG-219 board
Loosen the connection with CN104 on the PA-253 board and remove the TG-219
board.
6. Removing the RP-123 board
Remove the three precision screws (P1.4
x
3.5). Loosen the connection with CN1
on the PA-253 board and remove the RP-123 board.
7. Removing the PA-253 board
(1) Remove the two solderings connected to the CCD ground sheet (OUT).
(2) Remove the three precision screws (P1.4
x
3.5). While removing the PA-253
board from the CHB board assembly, remove the connectors (CN101, CN102,
CN103) on the PA-253 board.
6-3. Replacement of the Circuit Boards inside the CCD Unit
