Panasonic VL-GM201RU Service Manual ▷ View online
12.2.3. MAIN BOARD(PFUP1478Z)
12.2.2. LED BOARD(PFUP1478Z)
RESET IC(IC4)
Operating Power Supply : +3.3V
Package : 3pin mini type package
Outline of Operation : If It detects the +3.3V, DSP(IC5) is reset.
Call Button(SW1)
Outline of Operation : When a visitor presses the Call Button, a chime tone will ring at the monitor station. When a visitor
presses and holds the Call Button, the visitor’s voice will be heard through the monitor station.
presses and holds the Call Button, the visitor’s voice will be heard through the monitor station.
IR LED x4 (LED2-5)
Operating Power Supply : +5V
Outline of Operation : In the case of the Monochrome mode , light up.
Video Signal Modulator(IC101)
Operating Power Supply : +5V(+5V:18pin), +9V(+9VA:13pin)
Package : 24pin SOP
Outline of Operation : The frequency modulation of the video signal taken in from CCD(IC3) is carried out.
+5V Regulator(IC107)
Input Voltage : +16.5V
Output Voltage : +5V
Package : 4pin DIP(Integrated switching IC and coil construction)
Outline of Operation : It generate from +16.5V to +5V.
+9V Regulator(IC102)
Input Voltage : +16.5V
Output Voltage : +9V
Package : 8pin TP3H
Outline of Operation : It generate from +16.5V to +9V.
Voice Amplifier(IC103)
Operating Power Supply : +16.5V(IC103)
Package : 8pin DMP8
Outline of Operation : The voice signal from the Microphone is amplified and sent to the Monitor Station.The voice signal from
the Monitor Station is amplified and sent to the Speaker.
the Monitor Station is amplified and sent to the Speaker.
12.2.4. CCD BOARD(PFUP1477Z)
DSP(IC5)
Operating Power Supply : +3.3V
Package : 128pin LQFP128-P-1818C
Internal Component : 10bit A/D converter, 10bit D/A converter(1channel), 8bit D/A converter(2channel), I2C bus, AWB(Auto
White Balance), ALC(Auto Level Control), AGC(Auto Gain Control).
White Balance), ALC(Auto Level Control), AGC(Auto Gain Control).
Outline of Operation : The signal outputted from CCD Correlated Double Sampling IC(IC1) is converted into 10bit digital signal.
Then the digital signal is carried out Luminosity signal processing, Chroma signal processing and Gain control.
Then the digital signal is carried out Luminosity signal processing, Chroma signal processing and Gain control.
System Clock Frequency : 19.0699MHz(X1)
EEPROM(IC8) is accessed by I2C bus.
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CCD(IC3)
Operating Power Supply : +12V(VDD:8pin), -5V(VL:11pin)
Package : 14pin DIP
Outline of Operation : The CCD take in a image and convert to a electric signal.
CCD Correlated Double Sampling IC(IC1)
Operating Power Supply : +5V
Package : 8pin SO-8D
Outline of Operation : It carries out Correlated Double Sampling for the output signal from CCD.
CCD Vertical Driver(IC4)
Operating Power Supply : +12V(VHH:20pin, VH:16pin), -5V(VL:2pin)
Package : 20pin SSOP
Internal Component : Vertical drivers(4channel), SUB driver(1channel)
Outline of Operation : It is the driver IC for carrying out the vertical drive of CCD.
EEPROM(IC8)
Operating Power Supply : +3.3V
Package : 8pin SSOP-B8
Capacity : 256x8bit
Outline of Operation : The data which sets up each function and the state of operation of a camera is written.
OPamp(IC2)
Operating Power Supply : +5V
Package : 5pin SSOP-5-P-0.95
Capacity : 256x8bit
Outline of Operation : It is used for the Optical Black adjustment.
+3.3V Regulator(IC7)
Input Voltage : +5V
Output Voltage : +3.3V
Package : 6pin SSOP
Outline of Operation : It generate from +5V to +3.3V.
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VL-GM201RU
13 CIRCUIT OPERATION
13.1. MONITOR STATION BLOCK DIAGRAM
Video signal demodulation block
Backlight block
LCD display block
Speech network block
Speech control block
Talk LED
To Camera
door phone
door phone
Brigtness
Monitor
Answer mode
Power supply unit
Power supply
Door opener
Key control block
PBX interface block
Tone output block
Speaker amplifire block
Control block
To PBX
To Key control
system
VL-GM201RU Monitor unit block diagram
·
Video signal demodulation block
The frequency-modulated video signal from Door Station is demodulated and transferred to the LCD.
·
Backlight block
Backlight block for LCD. Caution; High voltage
·
LCD display block
The Image from CCD of Door Station is displayed.
·
Speech network block
Voice signal from Microphone or PBX is amplified and transferred to the Door Station. Also the voice signal from the Door
Station is amplified and transferred to the Speaker of PBX.
Station is amplified and transferred to the Speaker of PBX.
·
Speech control block
This block controls so that the voice signal from the microphone is sent to the Door Station or the voice signal from the door
station is sent to the speaker, and lights the Talk LED when it picks up the sound.
station is sent to the speaker, and lights the Talk LED when it picks up the sound.
·
Speaker amplifier block
The voice signal from Speech network block is amplified and sent to the Speaker.
·
Tone output block
The volume output from the Speaker is adjusted. (The gain of Speaker amplifier is controlled.)
·
PBX interface block
Detecting connected PBX started to operate, this block switches voice input/output to PBX with Relay.
·
Key control block
When the Door opener (Door button) is pressed, the electric lock connected to the Key control system is opened.
·
Control block
1. Pressing the Bright button adjusts the displayed image brightness to 5 stages.
2. Pressing the Monitor (MONITOR button) enables to monitor the voice and image from the Door Station.
3. 3 modes mentioned below can be changed by switching the Answer mode (Answer Mode control SW).
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AUTO : When a visitor calls you, you can answer the call by voice
PUSH : When a visitor calls you, you can answer the call by pressing [TALK button]. You may then speak with the caller.
HOLD : When a visitor calls you, you can answer the call by pressing [TALK button]. Press [TALK] while speaking to the
caller and release the button to allow the caller to speak to you.
caller and release the button to allow the caller to speak to you.
13.2. DOOR STATION BLOCK DIAGRAM
VL-GM201RU Camera doorphone block diagram
Camera unit
Video signal modulation block
Power supply
Call switch positioning light
Control block
Call switch
Speech net work block
Camera control block
IR LED
To Monitor block
·
Camera unit
The image around the front door is captured while the camera is activated.
·
Camera control block
The camera unit and IR LED which works at night are controlled.
·
Video signal modulation block
The image from the camera unit is frequency-modulated as the video signal and sent to the Monitor Station.
·
Call switch positioning light
The Call switch (Call button) lights up to be located.
·
Control block
When the call switch is pressed, the image from the camera unit is displayed, then the chime is rung. Besides while the
switch is held down, visitor´s voice can be heard from the Monitor Station.
switch is held down, visitor´s voice can be heard from the Monitor Station.
·
Speech network block
The voice signal from the Microphone is amplified and sent to the Monitor Station. Also the voice signal from the monitor
station is amplified and sent to the speaker.
station is amplified and sent to the speaker.
13.3. CALLING OPERATION
Calling Signal Path
<Door Station>
Press the call Button (SW1) of the handset at the front door
→
Q106
→
R128
→
D105~D108
→
L104, L105
→
T104
<Monitor Station>
→
L101, L102
→
D200
→
D209
→
Q204
→
IC200 (Pin17) Detection of an incoming signal
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