Gestetner A193 Service Manual page 594

ISDN G4 UNIT
1. Remove the rear cover [A] (6 screws). Then remove the cover [B] from
the rear cover.
2. [US model] Remove the bracket [C] (3 screws).
[Europ/Asia model] Remove the bracket [D] (2 screws)
Caution: Use extreme care opening and closing the connector latch to
prevent damaging the latch. Gently open the connector latch
and insert the flat cable. Ensure that the cable is properly
inserted before closing the latch.
3. Connect one end of the flat harness [F] to CN505 on the FCU, put the
harness through the metal core [G], and other end of the flat harness [H]
to the interface board [ I ].
4. Install the CiG4 board [J] onto the fax unit (2 screws).
5. Attach the interface board [ I ] to the CiG4 board [J].
6. [US model] Replace the bracket [C] (3 screws).
[Europ/Asia model] Replace the bracket [E] (6 screws) and [D] (2
screws) .
7. Replace the rear cover (6 screws).
8. Place the enclosed 'G4' label in the function key (F4) space.
After G4 unit installation, this key is dedicated to switching between the
G3 and G4 communication modes (note the user function key assignment
table, below).
Function Key
F1 Start Manual Rx
F2 TEL mode
F3 Tx result display
F4 Not programmed
9. Plug in the machine and turn on the ac and main switches.
10. Connect the ISDN cable to the ISDN jack at the rear of the machine, and
the analog telephone cable to the line jack.
11. Print the system parameter list and ensure that "G4" is listed as an option.
12. Set up and program the items required for ISDN communications, as
shown on the following page.
After setting up the ISDN parameters, be sure to turn the main and ac
switches off and on.
SM
and [E] (6 screws).
Without G4 unit
3-8
With G4 unit
Manual reception
TEL mode
Tx result display
G3/G4 communication mode
selection
(A639)