Panasonic UF-490 / UF-4000 / UF-4100 Service Manual ▷ View online
53
pPCHK1
Paper Detection Signal
PE
Acknowledge Data Request / Paper Empty Condition
(Peripheral
(Peripheral
→
Host)
PLH
+5V Pull Up
pSPKOT
Monitor Signal
pTR0
Transfer Control Cleaning Output
PWSAVE
Energy Saver Mode Transport Signal
R/W
Data Read/Write Select Signal
RCV (-)
Handset Receiver
RCV (+)
Handset Receiver
RS
Register Select Signal
SELECT
Select Signal
(Peripheral
(Peripheral
→
Host)
SI
Line Synchronizing Signal
T1
External Telephone Line Signal
T2
External Telephone Line Signal
TH1
Thermistor Output Signal
TH2
Thermistor Output Signal
TONER
Remaining Toner Level Signal
TSENCNT
Toner Sensor LED Control Signal
TSENCNT [GND] Ground
V5
V5
+5 VDC Power Supply
VLED
+24 VDC Power Supply
VDD
+5 VDC Power Supply
VSS
Ground
WAKUP
Energy Saver Mode Enable
White (N)
AC Power Supply
Glossary of Electrical Abbreviations
Signal Name
Description
54
3.6.
SC PC Board
CN2
CN3
SC PCB
Pin No.
Signal Name
Destination
Signal Waveform
Function
CN2-1
pSPKOT
SPEAKER
Monitor Signal
CN2-2
GND
SPEAKER
Ground
SC PCB
Pin No.
Signal Name
Destination
Signal Waveform
Function
CN3-1
A0
CIS
Picture Signal
CN3-2
AGND
CIS
Ground
CN3-3
+5V
CIS
+5 VDC Power Supply
CN3-4
SI
CIS
Line Synchronizing Signal
CN3-5
CLK
CIS
Picture Element Clock
CN3-6
GLED
CIS
GND for LED
CN3-7
VLED
CIS
+24 VDC Power Supply
+1V
-1V
(Min)
(Max)
0V
+0.1V(Min)
+0.2V(Max)
0V
+5V
+5V
0V
+5V
0V
+24V
0V
ON
+24V
55
CN4
SC PCB
Pin No.
Signal Name
Destination
Signal Waveform
Function
CN4-1
+24V
POWER SUPPLY
UNIT
CN103-1
UNIT
CN103-1
+24 VDC Power Supply
CN4-2
+24V
POWER SUPPLY
UNIT
CN103-2
UNIT
CN103-2
+24 VDC Power Supply
CN4-3
GND
POWER SUPPLY
UNIT
CN103-3
UNIT
CN103-3
Ground
CN4-4
GND
POWER SUPPLY
UNIT
CN103-4
UNIT
CN103-4
Ground
CN4-5
GND
POWER SUPPLY
UNIT
CN103-5
UNIT
CN103-5
Ground
CN4-6
+3.3V
POWER SUPPLY
UNIT
CN103-6
UNIT
CN103-6
+3.3 VDC Power Supply
CN4-7
+5V
POWER SUPPLY
UNIT
CN103-7
UNIT
CN103-7
+5 VDC Power Supply
CN4-8
-5V
POWER SUPPLY
UNIT
CN103-8
UNIT
CN103-8
-5 VDC Power Supply
CN4-9
+5VP
POWER SUPPLY
UNIT
CN103-9
UNIT
CN103-9
+5 VDC Pilot Power Supply,
that provides power to the
active components during
the Sleep Mode.
that provides power to the
active components during
the Sleep Mode.
CN4-10
nMPOFF
POWER SUPPLY
UNIT
CN103-10
UNIT
CN103-10
Energy Saver Mode Control
Signal
Signal
CN4-11
nSSR
POWER SUPPLY
UNIT
CN103-11
UNIT
CN103-11
Fuser Lamp Control Signal
+24V
+24V
0V
0V
0V
+3.3V
+5V
-5V
+5V
+6
7V
0V
(Energy Saver Mode)
Fuser Lamp
ON
56
CN5
SC PCB
Pin No.
Signal Name
Destination
Signal Waveform
Function
CN5-1
GND
PNL PCB
CN51-1
CN51-1
Ground
CN5-2
+5V
PNL PCB
CN51-2
CN51-2
+5 VDC Power Supply
CN5-3
+5VP
PNL PCB
CN51-3
CN51-3
+5 VDC Pilot Power Supply,
that provides power to the
active components during
the Sleep Mode.
that provides power to the
active components during
the Sleep Mode.
CN5-4
GND
PNL PCB
CN51-4
CN51-4
Ground
CN5-5
PNLSD
PNL PCB
CN51-5
CN51-5
Transmission Signal
CN5-6
PNLRD
PNL PCB
CN51-6
CN51-6
Reception Signal
CN5-7
PWSAVE
PNL PCB
CN51-7
CN51-7
Energy Saver Mode
Transport Signal
Transport Signal
CN5-8
WAKUP
PNL PCB
CN51-8
CN51-8
Energy Saver Mode Enable
H: Enable
L: Disable
H: Enable
L: Disable
CN5-9
PNLRST
PNL PCB
CN51-9
CN51-9
Panel Reset Signal
H: Reset
H: Reset
L: Not Reset
CN5-10
BZCLK
PNL PCB
CN51-10
CN51-10
Buzzer Signal
CN5-11
BPNT
PNL PCB
CN51-11
CN51-11
Read Point Detection Signal
L: Detect
L: Detect
0V
+5V
+5V
0V
+5V
0V
+5V
0V
Standby
+5V
0V
Energy Saver Mode
+5V
0V
+5V
0V
+5V
0V
+3.3V
ON
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