Service manual

FO-4700U
FO-47UC
8 – 2
2. Description
2-1. Extension board unit
[For inspection of control PWB, LIU PWB]
1) Remove the rear cabinet and shield plate from the unit, and remove
the check control PWB and check LIU PWB.
2) Mount the extension board (Control-EX) in the place where the con-
trol PWB has been removed. At that time, the connector (CNPRT) of
extension board (Control-EX) must be inserted into the printer PWB.
Connect the cables from the unit to the connectors (A side) (CNTXMA,
CNCISA, CNSPA, CNSENA, CNSTPA, CNPNA, CNPWA) of exten-
sion board (Control-EX) .
3) Connect the extension cables to the connectors (B side) of extension
board (Control-EX) as shown in Fig. 1.
4) The connector (CN1A) of the extension board (Printer-EX) must be
inserted into the connector (CNPRT) of the check control PWB.
5) Connect the extension PWB cable (QCNW-4559SCZZ) to the con-
nector (CNPRTB) of extension board (Control-EX) and the connec-
tor (CN1B) of extension board (Printer-EX).
6) The connector (CNLIU) of check LIU PWB must be inserted into the
check control PWB, and connect the line cable to the LIU PWB.
7) Connect the extension cables (7 types except extension cable) pulled
out from the unit to the check control PWB. (CNTXM, CNCIS, CNSP,
CNSEN, CNSTP, CNPN, CNPW)
Extension board connection diagram
Ref No. Cable parts code Description
CNPRT QCNW – 4559SCZZ EX. Cable, 32-32 PIN
CNTXM QCNW – 4973SCZZ EX. Cable, 4-4 PIN
CNCIS QCNW – 4974SCZZ EX. Cable, 10-10 PIN
CNSP QCNW – 4976SCZZ EX. Cable, 2-2 PIN
CNSEN QCNW – 4977SCZZ EX. Cable, 8-8 PIN
CNSTP QCNW – 4978SCZZ EX. Cable, 2-2 PIN
CNPN QCNW – 4979SCZZ EX. Cable, 24-24 PIN
CNPW QCNW – 4980SCZZ EX. Cable,12-12 PIN
CONTROL
EXTENSION
BOAD
PRINTER
EXTENSION
BOAD CHECK
LIU
PWB
PRINTER
PWB
CNPRTB
CN1B
CHECK
CONTORL
PWB
CNSP
CNPN
CNSTP
CNTXM
CNSEN
CNCIS
CNPRT
CNPW
Fig. 1