Service manual

SERVICE MANUAL MASTER FILE

ENGLISH

Rev. A (1997/05/07)

4-11

.2.6 C229PSB/PSE Board Removal

1• Remove the PAPER GUIDE ASSEMBLY, top cover, front cover, paper eject cover, knob and

tractor unit. (See Section 4.2.3.)

1• Remove the upper housing. (See Section 4.2.4.)

1• Remove 5 CBS (M3

4) screws and 3 CBB (3

12) screws securing the shield cover to the

printer mechanism and lower housing and remove the shield cover. (See Section 4.2.5.)

1• Disconnect the harness from the connector CN3 on the C229MAIN board.

1• Disconnect the power cable from the connector CN1 on the C229PSB/PSE Board.

1• Remove 2 CBB (3

12) screws securing the C229PSB/PSE Board to the Lower Case and

remove the C229PSB/PSE Board away.

WARNING

Before disassembling, assembling or adjusting the printer,

disconnect the power supply cable from the AC power socket. Failure

to do it cause personal injury.

Do not touch the heat sink attached to the switching FET (Q1) on the

power supply board, just after power off as it may be very hot.

Never touch the heat sink attaches to the switching FET (Q1) while at

AC power cable is connected to the AC outlet, as it is not electrically

isolated.

CBB(3 x 12)

CN1

C229PSB/PSE Board

Low er C ase

C 229M AIN B oard

Figure 4-7. C229PSB/PSE Board Removal