Sharp UX-370SE Service Manual page 90

UX-370ES/SE/F
FO-780AT/ES
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.
Relay
cable
1
CNLIUA
1
CNLIUB
6
CNPW
CHECK
CNLIUA: UX-370ES/SE/
CONTROL
PWB
NOTE
UNIT
+5V(J13)
DG(J5)
TO
P-E(TP2)
EXTENSION
P-IN(TP3)
PWB
RBNSNS (CONTROL)
DRSNS (CONTROL)
• The relay cables are used as one pair.
• The cover swich and hook switch are manually operated.
CNLIUA
CHECK
TEL/LIU
PWB
CNLIUB
CN1
POWER
SUPPLY
PWB
FO-780AT/ES: 14PIN
UX-370F: 12PIN
DON'T SEPARATE
RELAY CABLE
PAPER SNSOR RELAY CABLE (QCNW-4969SCZZ)
WHITE
(TEL/LIU)
BLACK
(TEL/LIU)
BROWN
(TEL/LIU)
RED
(TEL/LIU)
ORANGE
YELLOW
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.
Actual operation with mechanical unit
Recording paper ON/OFF operation
sensor
Hook SW ON/OFF operation
PWB sensor check
Recording paper
OFF
sensor
Hook SW ON-HOOK
* Recording paper: ON
No recording paper: OFF
CHECK
CONTROL
PWB
8 – 2
Mechanical unit PWB to be tested
OFF (Photo interrupter
is interrupted.)
ON-HOOK
ON/OFF operation
ON/OFF operation
CHECK
TEL/LIU
PWB
POWER
SUPPLY
PWB
TO
CHECK
PWB