Panasonic KX-FL403UA (serv.man7) Service Manual / Supplement ▷ View online
10
KX-FL403UA
11
KX-FL403UA
2.2.
HVPS (High Voltage Power Supply) SECTION
2.2.1.
HVPS SPECIFICATION
[Changed from original section “7.14.1. HVPS SPECIFICATION”]
2.2.2.
CHG-BIAS (Charge BIAS)/GRID/UNIT
[Changed from original section “7.14.2. CHG-BIAS (Charge BIAS)/GRID/UNIT”]
2.2.3.
DEV DC BIAS UNIT
[Added into original section “7.14. HVPS (High Voltage Power Supply) SECTION”]
7.14.1. HVPS SPECIFICATION
There is one terminal for transcription output and + and - are switched to be output.
Charge (CHG)
Grid
Developing DC
Transfer (TRA-)
Transfer (TRA+)
Output Characteristics
Constant current
Constant voltage
Constant voltage
Constant current
(Variable)
(Variable)
Constant voltage
Nominal Output Voltage 4.25kV
475±18V
220V±15V
100M
: (-800V)
800V±100V
Nominal Output Current 180±15
PA
(180
PA)
---------
-10.4
PA±1PA
PWM 50%
(at 100M
(at 100M
:)
1000M
:
(0.8
PA)
Load Range
21.0M
:
100M
:~2000M:
62.5~312M
:
10M
:~1000M:
Constant Current
Range
Range
-2500V~-500V
7.14.2. CHG-BIAS (Charge BIAS)/GRID/UNIT
When IC101 turns on the transistor Q210. CHG REM becomes “L”, and Charge BIAS(180
PA) is output from CHG OUTPUT.
GRID BIAS is generated by the current flowing in the GRID circuit via charge wire and GRID.
7.14.3. DEV DC BIAS UNIT
If CHG REM is “L”, transistor Q209 turns on from the IC101 and the DEV DEM becomes “L”, the developing voltage(+220V) is
out put from DEV terminal.
out put from DEV terminal.
12
KX-FL403UA
2.2.4.
TRA(+) BIAS (Transfer(+) BIAS)/TRA(-) BIAS (Transfer(-) BIAS) UNIT
[Changed from original section “7.14.3. TRA(+) BIAS (Transfer(+) BIAS)/TRA(-) BIAS (Transfer(-) BIAS) UNIT”]
7.14.4. TRA(+) BIAS (Transfer(+) BIAS)/TRA(-) BIAS (Transfer(-) BIAS) UNIT
When CHG REM is “L” and TRA CLK is “open”, Charge BIAS(180
PA) is output from CHG OUTPUT, and at the same time Trans-
fer(+)BIAS(800V) is output from TRA OUTPUT. When 5.425kHz PWM(Plus Width Modulation) signal is input to TRA CLK through
transistor Q208, Transfer(-) CURRENT BIAS corresponding to PWM signal is output from TRA OUTPUT.
transistor Q208, Transfer(-) CURRENT BIAS corresponding to PWM signal is output from TRA OUTPUT.
13
KX-FL403UA
2.3.
CAMBINET, MECHANICAL AND ELECTRICAL PARTS LOCATION
2.3.1.
LOWER MAIN CABINET SECTION (2)
[Changed from original section “10.8. LOWER MAIN CABINET SECTION (2)”]
Click on the first or last page to see other KX-FL403UA (serv.man7) service manuals if exist.