Panasonic DP-MB545 / DP-MB537 / DP-MB536 / DA-FAP109 / DA-FAP110 Service Manual ▷ View online
97
DP-MB545/537/536 series
6.16.7. Color LCD Touch panel function
The touch panel is a resistive film type of four-wire.
The voltage change of the touch panel is detected by the touch screen controller IC (IC5).
And, the touch panel controller IC (IC5) sends the data to LSI (IC2).
The voltage change of the touch panel is detected by the touch screen controller IC (IC5).
And, the touch panel controller IC (IC5) sends the data to LSI (IC2).
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DP-MB545/537/536 series
6.17. HVPS (High Voltage Power Supply) Section
6.17.1. HVPS Specification
As for the developing voltage, the DC voltage and AC voltage are overlapped and output from an output terminal.
There is one terminal for transcription output and + and - are switched to be output.
There is one control signal for the developing voltage and the supply voltage.
There is one terminal for transcription output and + and - are switched to be output.
There is one control signal for the developing voltage and the supply voltage.
Charge (CHG)
Grid
Developing DC
(DEV DC)
Developing AC
(DEV AC)
Supply
Output Characteristics
Constant current
Constant voltage
Constant voltage
(Variable)
Constant voltage
Constant voltage
(Variable)
Nominal Output Voltage
5.5KV
600±18V
250V±15V
(50~350V)
PWM24%
70M
Ω/310pF
330V±40Vp-p
38KHz±6KHz
350V±12V *
(150~450V)
*Developing
DC+100V 210M
Ω**
**Developing-Supply
Nominal Output Current
550±30
μA
10M
Ω
500
μA
10M
Ω
3.57
μA
-----
-----
Load Range
8.2M
Ω~12.0MΩ
----- 70M
Ω~1500MΩ
----- 70M
Ω~1500MΩ
Constant
Current/Voltage Range
Current/Voltage Range
4.7KV~6.6KV
-----
-----
-----
-----
Transfer (TRA) -
Transfer (TRA) +
Separator
Output Characteristics
Constant current
(Variable)
Constant voltage
Constant voltage
(Variable)
Nominal Output Voltage
-1.04KV
800V±50V
2.5KV±75V
(0V~ 4.0KV)
PWM27%
1500M
Ω
Nominal Output Current
-26.0
μA±2.5μA
(-4
μA~-45μA)
PWM 33.4%
40M
Ω
0.8
μA
1000M
Ω
1.7
μA
1500M
Ω
Load Range
12M
Ω(-45.0μA)
~500M
Ω(-14.0μA)
12M
Ω~1000MΩ
300M
Ω~2000MΩ
Constant Current
Voltage Range
Voltage Range
-0.1KV ~ -7.0KV
-----
-----
99
DP-MB545/537/536 series
6.17.2. CHG (Charge) BIAS Unit / GRID BIAS UNIT
When IC300 turns on the transistor Q514, the CHG REM becomes “L”, and the Charge BIAS is output from the CHG OUTPUT.
The GRID BIAS is generated by the current(500
The GRID BIAS is generated by the current(500
μA) flowing in the GRID circuit via charge wire and GRID.
6.17.3. DEV (Developing) DC BIAS UNIT
When CHG REM is “L”, 5.34KHz PWM (Pulse Width Modulation) is input from IC300 to DEV CLK through Q509, the developing
voltage corresponding to the DUTY of PWM signal is output from DEV OUTPUT. Also DUTY is adjusted by the utilization of the
developing unit and environmental temperature.
voltage corresponding to the DUTY of PWM signal is output from DEV OUTPUT. Also DUTY is adjusted by the utilization of the
developing unit and environmental temperature.
6.17.4. DEV (Developing) AC BIAS UNIT
The 330 Vp-p /38 kHz wave of developing AC voltage is output from DEV OUTPUT.
This voltage is overlapped with developing DC voltage and output as AC voltage that includes the development DC voltage.
This voltage is overlapped with developing DC voltage and output as AC voltage that includes the development DC voltage.
6.17.5. SUP (Supply) BIAS UNIT
The Supply voltage is the Developing voltage + DC100V.
The voltage is output from SUP OUTPUT.
There is one control signal for the developing voltage and the supply voltage.
The voltage is output from SUP OUTPUT.
There is one control signal for the developing voltage and the supply voltage.
6.17.6. TRA (Transfer) (+)BIAS UNIT / TRA (Transfer ) (-)BIAS UNIT
When CHG REM is “L” and TRA CLK is “open”, Charge BIAS (500
μA) is output from CHG OUTPUT, and at the same time Transfer
(+) BIAS (800V) is output from TRA OUTPUT. When 5.34kHz PWM (Pulse Width Modulation) signal is input to TRA CLK through
transistor Q507, Transfer (-) CURRENT BIAS corresponding to PWM signal is output from TRA OUTPUT.
transistor Q507, Transfer (-) CURRENT BIAS corresponding to PWM signal is output from TRA OUTPUT.
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DP-MB545/537/536 series
6.17.7. SPA (Separator) BIAS UNIT
When 5.34kHz PWM (Pulse Width Modulation) signal is input to SPA CLK through transistor Q650,
SPA (Separator) BIAS corresponding to PWM signal is output from SPA OUTPUT.
SPA (Separator) BIAS corresponding to PWM signal is output from SPA OUTPUT.
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