Service manual

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.
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.
Mechanical unit PWB to be tested
Actual operation with mechanical unit
Recording paper
sensor
ON/OFF operation OFF (Photo interrupter
is interrupted.)
Hook SW ON/OFF operation ON-HOOK
PWB sensor check
Recording paper
sensor
OFF ON/OFF operation
Hook SW ON-HOOK ON/OFF operation
* Recording paper: ON
No recording paper: OFF
CNLIUA
CHECK
TEL/LIU
PWB
Connector Cable
CNPN2 QCNW-4723SCZZ
CNTH2 QCNW-4724SCZZ
CNCCD2 QCNW-4725SCZZ
CNMT2 QCNW-4726SCZZ
CNLED2 QCNW-4727SCZZ
CNSP2 QCNW-4728SCZZ
CNCS3
CNSNS
QCNW-4729SCZZ
QCNW-4730SCZZ
Cable color CNSNS Connected to (PWB)
1
14
CHECK
CONTROL
PWB
1. Brown RHS TP2 (TEL/LIU)
2. Red DRSNS TP3 (TEL/LIU)
3. Orange P.E TP1 (TEL/LIU)
4. Yellow RBN
Cable
A set with a mounted
extension board unit
CNLIU
JP2 (CONTROL)
JP1 (CONTROL)5. Green PIN
CNPW
POWER
SUPPLY
PWB
JP1
JP2
TP3
TP1
TP2
UX-510U/UX-510C/UX-500U
UX-500C/FO-1460U
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