Panasonic KX-MB262CX, Service Manual

Page: 17 / 107

KX-MB262CX/KX-MB772CX KX-MB262CX/KX-MB772CX
6.1 6.15. 5. HVP HVPS (Hi S (High V gh Volt oltage P age Powe ower Sup r Supply ply) SEC ) SECTIO TION N
6. 6.15 15.1 .1.. HV HVPS PS SP SPEC ECIF IFIC ICA ATI TION ON
As for the developing volta As for the developing voltage, the DC voltage and A ge, the DC voltage and AC voltage are overlapped a C voltage are overlapped and output from an output termin nd output from an output terminal. al.
There is one terminal for transcription output and + and - are switched to be output. There is one terminal for transcription output and + and - are switched to be output.
6.1 6.15.2 5.2.. CHG CHG-BI -BIAS AS (Ch (Charg arge B e BIAS IAS)/GR )/GRID/ ID/ UNI UNIT T
When IC300 turns on the transistor Q506, CHG REM becomes “L”, and Charge BIAS (200 When IC300 turns on the transistor Q506, CHG REM becomes “L”, and Charge BIAS (200
µ µ
A) is A) is output from output from CHG OUTPUT CHG OUTPUT..
GRID BIAS is generated by the current flowing in GRID BIAS is generated by the current flowing in the GRID circuit via charge wire and GRID. the GRID circuit via charge wire and GRID.
C Ch ha arrg ge e ((C CH HG G)) G Grriid d D De ev ve ello op piin ng g D DC C D De ev ve ello op piin ng g A AC C T Trra an ns sffe er r ((T TR RA A) ) -- T Trra an ns sffe er r ((T TR RA A) ) + +
Ou Outp tput ut Ch Char arac acte teri rist stic ics s Co Cons nsta tant nt cu curr rren entt Co Cons nsta tant nt vo volt ltag age e Co Cons nsta tant nt vo volt ltag age e Co Cons nsta tant nt vo volt ltag age e Co Cons nsta tant nt cu curr rren entt
(Variable) (Variable)
Constant voltage Constant voltage
N No om miin na al l O Ou uttp pu ut t V Vo olltta ag ge e 4 4..3 35 5K KV V 4 47 75 5± ±1 10 0V V 2 23 30 0V V± ±1 15 5V V
(50~300V) (50~300V)
PWM20%
PWM20%
300M
300M
Ω Ω
/220pF /220pF
330V±15Vp-p 330V±15Vp-p
34KHz
34KHz
100M 100M
Ω Ω
(-1.48KV) (-1.48KV)
785V±100V 785V±100V
Nomin Nominal Output C al Output Current urrent 200±1 200±15 5
µ µ
A A
(19.4M (19.4M
Ω Ω
))
200 200
µ µ
A A 0.73 0.73
µ µ
A A
----- -----
-14.8 -14.8
µ µ
A±1 A±1
µ µ
A A
(0 (0
µ µ
A~25 A~25
µ µ
A) A)
PWM 35% PWM 35%
1000M 1000M
Ω Ω
(0.8 (0.8
µ µ
A) A)
L Lo oa ad d R Ra an ng ge e 1 18 8..1 1M M
Ω Ω
~20.6M ~20.6M
Ω Ω
---------- 1 10 00 0M M
Ω Ω
~2000M ~2000M
Ω Ω
---------- 3 33 3..8 8M M
Ω Ω
~284M ~284M
Ω Ω
10M 10M
Ω Ω
~1000M ~1000M
Ω Ω
Constant Current Constant Current
Range Range
4 4..1 1~ ~4 4..6 6K KV V ---------- ---------- ---------- --0 0..5 5K KV V ~ ~ --4 4..2 2K KV V ----------