Sharp UX-B20 Service Manual page 96

UX-B20U/UX-B20C/B25C
FRONT PANEL
MAIN SW CALIBRATION
ON ON
OFF OFF
MODE
IC
Voltage
CALIBRATION
5V
DOWNLOAD
3.3V
(1) Before connecting the PC
and Program loader BOX
with RS-232C cable.
Set the switches of Program
loader BOX as follows.
(a) MAIN SW OFF (down)
(b) CALIBRATION OFF
(down)
FAX PWB rewriting
(c) BATSW OFF (down)
(d) PARK SW OFF (down)
(e) IC Voltage to 3.3V (down)
(f) MODE to DOWNLOAD
(down)
1*: Connect one end of RS-232C cable to the COM port of the PC and the other end to RS-232C DSUB 9PIN of Program loader BOX.
2*: Press and hold down the keys 1 and 3 simultaneously while turning on the FAX machine and until "DOWNLOAD MODE" appears.
3*: Perform the procedure (3) before (4). (Turn on the Program loader BOX and the FAX machine before connecting Main cable and the FAX
machine.)
Connect one end of Main cable to the connector of the Control PWB connector for the FAX machine (CNPRG) (refer to Fig. 3), and the other end
to CN1 of Program loader BOX.
BAT SW PARK SW
ON ON
OFF OFF
CALIBRATION
Cordless MAIN
DOWNLOAD
CN1 CN2
Fig. 2. Program loader BOX
(2) After connecting the PC
and Program loader BOX
with RS-232C cable. (1*)
Set the switch of Program
loader BOX as follows.
(g) MAIN SW ON (up)
Table 2. Program loader BOX connection procedures
Main Cable
QCNW-306BSCZZ
Control
PWB
FAX machine
Fig. 3. Connection of Main cable
BACK PANEL
RS-232C
DSUB 9PN
(3) Power supply to the FAX
machine.
Plug the power cable of the
FAX machine to the outlet.
(2*)
From
Program Loader BOX
(CN1)
Download cover
8 – 6
FUSE
AC
CORD
(4) Connect Program loader
BOX and the
Control PWB of the FAX
machine (CNPRG) with
Main cable. (3*)
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