Ricoh A230 Service Manual page 721

[L]
[K]
[N]
7. Insert the FCU/CiG4 assembly [K] into the expansion box [L], connect the
harness [M], and then slide the assembly all the way into the box.
8. Open the ISDN modular jack window [N] in the bracket [O], then install the
bracket [O] on the application rack.
9. Re-install the left-side cover (4 screws) and the rear cover. (4 screws).
10. Attach the enclosed 'G4' label to the function key (F4) space.
After G4 unit installation, this key is dedicated to switching between G3 and G4
communication modes. (Note the user function key assignment, below.)
Function keys with G4 unit
• F1: Start Manual Rx
• F2: Tx result display
• F3: TEL mode
• F4: G3/G4 communication mode selection
• F5: Not programmed
11. Make two turns on the ISDN cable [P] and attach the metal core [Q] so that the
cable goes through the core three times. Then, connect the cable to the ISDN
jack [R]. If an analog telephone line has been removed before installation, re-
connect it to the NCU.
12. Plug in the machine and turn on the main power switch.
13. Print the system parameter list and ensure that "G4" is listed as an option.
Refer to section 4.1.1. and 4.1.3.
14. Set up and program the items required for ISDN communications.
After setting up the ISDN parameters, be sure to turn the main power switch off
and on.
SM
[M]
[R]
[O]
A816I503.WMF
3-11
ISDN UNIT
[P]
[Q]
A816I506.WMF
A230/A231/A232