RICOH FAX 680MP
Manual de Servicio

PCBs

31 March, 1997

6.2 PCBS
6.2.1 FCU AND NCU
[C] [B]

[D] [E]

[A]

[C]
H905R510.cdr

[F]

H905R511.cdr

1. Open the top cover, gently slide the print head carriage [A] to the left end, remove the cable supporter [B], and release the flat cables [C] from the hooks (refer to section 1.2). 2. Gently slide the carriage [A] halfway across, and put the flat cables [C] inside the opening [D]. 3. Place the machine as shown, and remove the bottom cover assembly [E] (13 harnesses; do not disconnect the one connecting the FCU and the NCU, 4 screws; 2 screws at the machine�s front are short, the others are long) [E]. 4. Remove the paper tray [F] from the bottom cover assembly. 5. Remove the FCU (4 screws, 1 harness) and the NCU (3 screws, 1 harness). NOTE: When replacing the FCU, make sure to turn on the battery switch (JP1) before assembly [See the next page].

6-6