Sharp FO-1660 Service Manual page 86

UX-600MU/MC
FO-1660U/C
2. Description
2-1. Extension board unit
1. Remove the TEL/LIU PWB, control PWB and Power Supply PWB
from this unit, and mount the extension board unit instead.
•
Before connecting the wiring to the extension board unit, set the
test PWB switches to the fixed position.
2. The setting is as follows.
Cable
TP1
1
CNLIU
TP2
14
TP3
CHECK
TEL/LIU
PWB
A set with a mounted
extension board unit
Connector
CNPN2 QCNW-4723SCZZ
CNTH2 QCNW-4724SCZZ
CNCCD2 QCNW-4725SCZZ
CNMT2 QCNW-4726SCZZ
CNLED2 QCNW-4727SCZZ
CNSP2 QCNW-4728SCZZ
CNCS3 QCNW-4729SCZZ
CNSNS QCNW-4730SCZZ
CNPW
POWER
SUPPLY
PWB
CNLIUA
JP1
JP2
CHECK
CONTROL
PWB
Cable Cable color
1. Brown
2. Red
3. Orange
4. Yellow
5. Green
The recording paper sensor (P. E) and the hook switch are operated
by OR of the mechanical unit switch and the test PWB switch. When
performing installation in the machine unit, set the test PWB switches
to the fixed position.
Recording paper
sensor
Hook SW
Recording paper
sensor
Hook SW
* Recording paper: ON
No recording paper: OFF
8 – 2
CNSNS Connected to (PWB)
RHS TP2 (TEL/LIU)
DRSNS TP3 (TEL/LIU)
P.E TP1 (TEL/LIU)
JP2 (CONTROL)
RBN
PIN JP1 (CONTROL)
Mechanical unit
Actual operation with mechanical unit
ON/OFF operation OFF (Photo interrupter
is interrupted.)
ON/OFF operation ON-HOOK
PWB sensor check
OFF ON/OFF operation
ON-HOOK ON/OFF operation
PWB to be tested