Panasonic DP-1520P / DP-1820P / DP-1820E (serv.man4) Service Manual / Other ▷ View online
13
DP-1520P/1820P/1820E
SEP 2004
Ver. 1.0
2.3.
PNL PC Board Block Diagram (Panel PCBs)
The PNL1 PCB consist of Panel Control CPU, Real Time Clock and other peripherals. It has no decision
making functions, which are controlled by Command Signals from the SC PCB.
The PNL2 and 3 consist of LED and Switches, which are controlled by PNL1.
making functions, which are controlled by Command Signals from the SC PCB.
The PNL2 and 3 consist of LED and Switches, which are controlled by PNL1.
SCN0 ~11
LED0 ~9
KEYIN0~5
CPU (V850)
nWAKUP
nSLPKY
DB[0~7]
LCD Module
PNL3
(SW/LED Board)
KEY:26
LED :23
LED :23
PNL SYSTEM DIAGRAM
RTC
(RE AL TIME
CLOCK)
S-3510ANFJ-TF
LEDC T0,1
TX D
BZCLK
RXD
A/ D
PNL2
(SW/LED Board)
KEY :20
LED :30
LED :30
DC/DC
Converter
3. 3V
IC
5V
BATLVL
3.3V
WR
SIO
SCK
RD
14
DP-1520P/1820P/1820E
SEP 2004
Ver. 1.0
2.4.
Shut Down / Sleep Mode
Note:
Shut Down / Sleep Modes can be selected in the User Mode.
This function reduces the power consumption in standby mode.
During Shut Down Mode, power is supplied to the Energy Saver Lamp to keep it illuminated, to the circuit
that monitors incoming Ringing signals, and to circuits that maintain Deferred communications only. The
power is recovered only when an incoming Ringing signal is detected, the time to perform a Deferred
communication has lapsed, or the Energy Saver key is pressed.
During Shut Down Mode, power is supplied to the Energy Saver Lamp to keep it illuminated, to the circuit
that monitors incoming Ringing signals, and to circuits that maintain Deferred communications only. The
power is recovered only when an incoming Ringing signal is detected, the time to perform a Deferred
communication has lapsed, or the Energy Saver key is pressed.
During Sleep Mode, power is supplied to the Energy Saver Lamp to keep it illuminated, to the circuit that
monitors incoming Ringing signals, to circuits that maintain Deferred communications, and to the circuit that
monitors incoming PC Print Data only. The power is recovered only when an incoming Ringing signal is
detected, the time to perform a Deferred communication has lapsed, when an incoming print data from a
PC is detected, or the Energy Saver key is pressed.
monitors incoming Ringing signals, to circuits that maintain Deferred communications, and to the circuit that
monitors incoming PC Print Data only. The power is recovered only when an incoming Ringing signal is
detected, the time to perform a Deferred communication has lapsed, when an incoming print data from a
PC is detected, or the Energy Saver key is pressed.
Shut Down Mode
Sleep Mode
2.5.
Option PC Board
• FXB PC Board
G3 Fax Communication when MJR PCB is installed at the same time.
• SDRM PC Board
SDRAM Memory PCB Sort Memory.
16 MB, 64 MB and 128 MB
16 MB, 64 MB and 128 MB
• FRM8 Expansion Memory Boad
Option Program and Font Memory for Expansion.
No.
Item
Recovers from
Shut Down Mode
Remark
1
When Energy Saver key is pressed
Yes
2
Deferred Communication time has lapsed
Yes
3
Ringing Signal detected
Yes
4
Off Hook (External Telephone)
Yes
5
When printing from a PC
No
Includes Internet Fax
6
When an ALARM Status indication is
displayed
displayed
No
7
When an Original is set onto ADF/i-ADF
Yes
No.
Item
Recovers from
Sleep Mode
Remark
1
When Energy Saver key is pressed
Yes
2
Deferred Communication time has lapsed
Yes
3
Ringing Signal detected
Yes
4
Off Hook (External Telephone)
Yes
5
When printing from a PC
Yes
Includes Internet Fax
6
When an ALARM Status indication is
displayed
displayed
No
7
When an Original is set onto ADF/i-ADF
Yes
15
DP-1520P/1820P/1820E
SEP 2004
Ver. 1.0
3 Signal Waveform
3.1.
Glossary of Electrical Abbreviations
Glossary of Electrical Abbreviations
Signal Name
Function
+12V
+12 VDC Power Supply
+24V
+24 VDC Power Supply
+24VD1
+24 VDC Power Supply
+24VFL
+20 / +24 VDC Power Supply
+24VM
+24 VDC Power Supply
+24VOPC
+24 VDC Power Supply
+24VOPF
+24 VDC Power Supply
+3.3V
+3.3 VDC Power Supply
+5v
+5 VDC Power Supply
+5VD
+5 VDC Power Supply
+5VP
+5 VDC Power Supply
+ACT
ACTIVE Lamp LED Power Supply
+ALM
ALARM Lamp LED Power Supply
+DAT
DATA Lamp LED Power Supply
+SLP
Energy Saver Lamp LED Power Supply
AC(L)
AC Power Supply
AC(N)
AC Power Supply
ACSW
Fuser Relay
ADF2
2nd Paper Tray Feed Roller Drive Signal
ADF3
3rd Paper Tray Feed Roller Drive Signal
ADF4
4th Paper Tray Feed Roller Drive Signal
AGND
Ground
BAT+
Lithium Battery
BMCNT
Toner Bottle Motor Control Signal
BTHP
Toner Bottle Position Sensor Signal
BZ-
Buzzer Signal
BZ+
Buzzer Signal (+)
C1-
Capacitor 1 Negative Connection Pin for Converter
C1+
Capacitor 1 Positive Connection Pin for Converter
C2-
Capacitor 2 Negative Connection Pin for Converter
C2+
Capacitor 2 Positive Connection Pin for Converter
C3+
Capacitor 3 Positive Connection Pin for Converter
C4+
Capacitor 4 Positive Connection Pin for Converter
CASET
Paper Tray Detection Signal (1st Feeder)
CCRMT
Charge Leak Detection Signal
CPWM
Charge Control DC ON/OFF PWM
CSB1
Chip Select Signal
CST2
2nd Paper Tray Detection Signal
CST3
3rd Paper Tray Detection Signal
CST4
4th Paper Tray Detection Signal
CSTOP
2nd Paper Feed Module Detection Signal
CSTOP4
4th Paper Feed Module Detection Signal
16
DP-1520P/1820P/1820E
SEP 2004
Ver. 1.0
DAA1
ADF Motor Current Control Signal
DB0
Data Signal
DB1
Data Signal
DB2
Data Signal
DB3
Data Signal
DB4
Data Signal
DB5
Data Signal
DB6
Data Signal
DB7
Data Signal
DDCPWM
Development Control DC ON/OFF PWM
E_RDB
Read/Write Execution Control Signal
ELPCNT
Discharge Lamp
F/R
Direction of Rotation Signal
FDPCHK2
2nd Paper Tray Paper Registration Detection Signal
FDPCHK3
3rd Paper Tray Paper Registration Detection Signal
FDPCHK4
4th Paper Tray Paper Registration Detection Signal
FSH
Transfer Gate Clock
GND
Ground
GPWM
Grid Control ON/OFF PWM
HFSOL
Temp Humidity Sensor Signal
HPMB
LCD Driver Power Control Signal
HSYNC
Horizontal Synchronous Signal
HUMISN
Temp Humidity Sensor Signal
HVAC1
INV PC Board/Lamp Signal
HVAC2
INV PC Board/Lamp Signal
IICSCL
IIC Transmission Clock
IICSDA
IIC Transmission Signal
IOUTA
Motor Control Signal
IOUTB
Motor Control Signal
JAMDOR2
2nd Paper Tray Jam Access Cover Open Detection Signal
JAMDOR3
3rd Paper Tray Jam Access Cover Open Detection Signal
JAMDOR4
4th Paper Tray Jam Access Cover Open Detection Signal
KCDET
Key Counter Option Detection
KCNT
Key Counter Option
KIN0
PNL Key Signal (Key Line)
KIN1
PNL Key Signal (Key Line)
KIN2
PNL Key Signal (Key Line)
KIN3
PNL Key Signal (Key Line)
KIN4
PNL Key Signal (Key Line)
KIN5
PNL Key Signal (Key Line)
KIN6
PNL Key Signal (Key Line)
KIN7
PNL Key Signal (Key Line)
L1
Line Signal
L2
Line Signal
L5V
Laser Circuit +5VDC Power Supply
LD
Motor Lock Detection Signal
Glossary of Electrical Abbreviations
Signal Name
Function
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