Minolta EP4000 - Page 284

Interleaf EP5000/EP4000 TROUBLESHOOTING
97.04.01
T-9
Sym-
bol
Parts/Signal Name
Dis-
play
IC
No.
Port
No.
I/O
Operation Charac-
teristics/Panel Dis-
play
CN/PJ
No.
Page
H or 1 L or 0
CNT2 Plug-In Counter/REM 1/8 IC1A P44 f Normally
When
count-
ing
PJ28A-9
↑ Plug-In Counter/Set 3/8 IC5A BPC3 
Out of
position
In
position
PJ28A-7
H1 Fusing Heater Lamp 1/8 IC1A P57 f OFF ON PJ33A-2
H3
Paper Dehumidifying
Heater
1/8 IC1A P45 f ON OFF PJ4A-5
RY1 Main Relay 1/8 IC1A P46 f ON OFF PJ4A-3
LA1
Exposure Lamp/AVR
REM
1/8 IC1A P61 f OFF ON PJ8A-13
LA2
Main Erase Lamp/
REM
2/8 IC4A BPA1 f OFF ON PJ12A-3
LA2
Main Erase Lamp/
failure detection
2/8 IC4A APC7  OFF ON PJ12A-5
S1 Power Switch 1/8 IC1A P53  OFF ON PJ4A-1
S21
Front Door Interlock
Switch
1/8 IC1A P51  OFF ON PJ4A-4
S22
Right Upper Door
Interlock Switch
3/8 IC5A BPB2  OFF ON PJ16A-2
S23
Left Upper Door
Interlock Switch
3/8 IC5A BPC6  OFF ON PJ16A-4
S53 Paper Exit Switch 3/8 IC4A BPB2 
Paper
present
Paper
not
present
PJ20A-12
S61
Paper Size Detecting
Switch 1
1/8 IC3A BPA6 
Size yet
to be de-
tected
Size de-
tected
PJ26A-2
S62
Paper Size Detecting
Switch 2
1/8 IC3A BPA7 
Size yet
to be de-
tected
Size de-
tected
PJ26A-4
S63
Paper Size Detecting
Switch 3
2/8 IC3A BPB4 
Size yet
to be de-
tected
Size de-
tected
PJ26A-7
S64
Paper Size Detecting
Switch 4
2/8 IC3A BPB5 
Size yet
to be de-
tected
Size de-
tected
PJ26A-9
S106
Toner Empty
Detecting Switch
3/8 IC1A BPC6 
Toner
still avail-
able
Toner
empty
PJ11A-8B