Panasonic UE-407019GE Service Manual / Supplement ▷ View online
9
3 Maintenance, Adjustments and Check Points
This chapter covers only the differences from the UF-885/895 Service Manual.
10
3.1
General Circuit Diagram
3.1.1
Option G3 Communication Port
*HANDSET-2
*EXT. TEL-2
LINE-2
* EXT. TEL-2 and HANDSET-2 jacks on the LCU PC Board
are for troubleshooting purposes only.
CN211
CN210
CN51
CN52
CN53
CN54
CN50
CN131
CN133
CN134
CN23
CN21
CN20
CN25
CN132
(1202)
(522)
LCU/LCE
(1201)
G3B
FCB
PRINTER I/F
(OPTION)
(PR
T)
11
3.2
G3B PCB
Note:
The FRM PC Board contains the firmware for the G3B PC Board.
CN131
Pin No.
Signal Name
Destination
Signal Waveform
Function
CN131-1
+5V
FCB PCB CN50-1
+5 VDC Power Supply
CN131-2
+5V
FCB PCB CN50-2
+5 VDC Power Supply
CN131-3
OPA[1]
FCB PCB CN50-3
Address Signal
CN131-4
OPA[2]
FCB PCB CN50-4
Address Signal
CN131-5
OPA[5]
FCB PCB CN50-5
Address Signal
CN131-6
OPA[6]
FCB PCB CN50-6
Address Signal
CN131-7
OPA[9]
FCB PCB CN50-7
Address Signal
CN132
IC15
IC5
IC26
IC29
CN131
14
1
68
1
FRM PCB
(1204)
IC27
(PLCC IC)
+5V
+5V
5V(H)
0V(L)
5V(H)
0V(L)
5V(H)
0V(L)
5V(H)
0V(L)
5V(H)
0V(L)
12
CN131-8
OPA[10]
FCB PCB CN50-8
Address Signal
CN131-9
nWAIT[5]
FCB PCB CN50-9
Low Enable
CN131-10
NC
FCB PCB CN50-10
Not Used
CN131-11
nCSOB
FCB PCB CN50-11
Low Enable
CN131-12
nCSOE
FCB PCB CN50-12
Low Enable
CN131-13
nOPWRH
FCB PCB CN50-13
Low Enable
CN131-14
GND
FCB PCB CN50-14
Ground
CN131-15
nIRQOP1
FCB PCB CN50-15
Low Enable
CN131-16
nIRQOP2
FCB PCB CN50-16
Low Enable
CN131-17
NC
FCB PCB CN50-17
Not Used
CN131-18
pOP1RST
FCB PCB CN50-18
High Enable
CN131-19
IOD[0]
FCB PCB CN50-19
Data Signal
Pin No.
Signal Name
Destination
Signal Waveform
Function
5V(H)
0V(L)
5V(H)
0V(L)
3V(H)
0V(L)
3V(H)
0V(L)
5V(H)
0V(L)
0V
5V(H)
0V(L)
5V(H)
0V(L)
3V(H)
0V(L)
5V(H)
0V(L)
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