Service manual

UX-340L/UX-345L
UX-330L
8 – 2
2. Description
2-1. Relay board unit
1. Remove the TEL/LIU PWB, control PWB and Power Supply PWB
from this unit, and mount the relay board unit instead.
• Before connecting the wiring to the relay 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.)
PWB sensor check
Recording paper
sensor
ON/OFF operation
OFF
POWER
SUPPLY
PWB
CHECK
TEL/LIU
PWB
CHECK
CONTROL
PWB
RELAY CABLE
DON'T SEPARATE
UNIT
NOTE
PAPER SENSOR RELAY CABLE (QCNW-4969SCZZ)
TO
CHECK
PWB
TO
EXTENSION
PWB
+5V(J13)
DG(J5)
P-E(TP2)
P-IN(TP3)
RBNSNS
DRSNS
(TEL/LIU)
(TEL/LIU)
(TEL/LIU)
(TEL/LIU)
(CONTROL)
(CONTROL)
WHITE
BLACK
BROWN
RED
ORANGE
YELLOW
ON/OFF operation
ON-HOOK
ON/OFF operation
Hook SW ON-HOOK
* Recording paper: ON
No recording paper: OFF
Hook SW
Relay
cable
CNLIUA
CHECK
CONTROL
PWB
CHECK
TEL/LIU
PWB
1
14
CNPW
CNLIU
POWER
SUPPLY
PWB
• The relay cables are used as one pair.
• The cover swich and hook switch are manually operated.
CN1