Panasonic AJHVF27P, Service Manual

Page: 17 / 48

UNREG IN (11-17V) 1
UNREG IN (11-17V) 2
MAIN P.C.Board
SUB2 (VIDEO PROCESS) P.C.Board
SWITCHING POWER
REGULATOR
GND 5
GND 6
UNREG GND 7
VF VIDEO (1vp-p) 8
VIDEO GND 9
ZEBRA
Peaking CONT
13
16
9 (Vcc)
10
7
Q402B
Q402A
VR401
(+9.5V ADJ.)
+9.5V OUT
TP3
TP2
IC 401
MAIN P.C.Board
2
3 +H DEF
-H DEF
CN501
HV
1
3 G2 (SCREEN)
+H (HEATER)
CN502
4 -H (HEATER)
HEATER
VOLTAGE
CONTROL
IC 503
VR501
(HEATER V ADJ.)
8
0
3
FBT
TP21
TP23
TP22
Q503
(H OUT)
FOCUS
IC502A
Q502
1
SUB1 (H,V DEFLECTION) P.C.Board
4 VF VIDEO
CN101 A
4 VF VIDEO
CN101 B
SYNC
SEPARATOR
IC104
H-OSC
PHASE
SHIFTER
AFC
V-OSC
V DRIVE
(SAW)
7
3
1
RV103
(H-HOLD)
10
RV101
(H-SHIFT)
RV104
(H-DUTY)
RV105
(V-HOLD)
7 HD (+)
CN101 B
V OUT
Q105
8
12
2 20
21
17
13
1
2
CN102
5
11 H-SIZE CTL
CN101 B
11 H-SIZE CTL
CN101 A
4,5
RV106 (V-SIZE)
RV108 (V-LIN)
RV112 (V-CENTER)
RV110
(H-SIZE)
10 FOCUS
CN101 B
RV109
(FOCUS)
+V DEF
-V DEF
10 VF VIDEO
CN201 A
3 VIDEO IN
RV201
(CONTRAST)
PRE AMP
PEAKING
AMP
BRIGHTNESS
CONTROL
CN262
30nS
DELAY
PEAKING
MIX
RV204
(PEAKING)
RV203
(PEAKING BALLANCE)
RV206
(BRIGHTNESS)
RV205
(SUB BRIGHTNESS)
IC 205
6 15
IC 204
DL201
IC 203
3 6
12 7
Q201
BACKPORCH
CLAMP
IC 202
6
3
2
RV202
(CLAMP LEVEL)
SUB3 P.C.Board
1 G1 OUT
1 AMP V CLAMP
CLAMP PULSE
GENERATOR
IC 106
8 V-CLAMP(+)
CN101 B
8 V-CLAMP(+)
CN101 A
8
V-CLAMP(+)
CN201 A
5 V-CLAMP(+)
CN201B
CN201B
3
CN261
CN263
TP261 TP262
Q264,265,266
Q267
S302 (ZEBRA)
ON OFF
PEAKING
CONTROL
4 PEAKING
CN201B
4 PEAKING
IC 201
OVER ALL BLOCK DIAGRAM
SERIAL
/
PARALLEL
LED
DRIVER
DECODER
SP CLK 10
SP WR 11
SP DATA 12
1
2
3
4
6
7 +5V
REC/TALLY
EFFECT( ! )
BATT
G TALLY
VTR SAVE
+5V
2
23
21
24
11
IC 302
CN301
8
11 6
12
8
1,2
3
4
5
6
IC 301
IC 303,304
1
2
3
4
6
7 +5V
REC/TALLY
EFFECT(!)
BATT
G TALLY
VTR SAVE
CN41
D1 D2 D3 D4 D5
5 TOP TALLY
CN201 B
12 BACK TALLY
CN101 B
S303 (TALLY)
H I
OFF
LOW
REG. +9.5V
Q301
+9.5V
+9.5V
LED101
LED201,202
SUB1 P.C.Board
SUB2 P.C.Board
12 BACK TALLY
CN101 A
5 TOP TALLY
CN201 A
H-DY
V-DY
9 FBP TRG
CN101 A
9 FBP TRG
CN101 B
7 HD (+)
CN101 A
10 FOCUS
CN101 A
CN001
CN001
CN001
CN001
CN001
Red
Brown
Blue
Orange
CRT
HV CONNECTOR
14
15
CN101B
C.BLK 1
C.BLK 2 H,V BLK
MIX
IC111B
H,V BLK
MIX
IC113B
14 C.BLK 1
CN101 A
C518,519
6 C.BLK 2
CN201 B
3
6
3
IC101
!
!
BATT
VTR
SAVE
!
TALLY/REC
CRT MASK
(D3) (D2) (D5)
(D1) (D4)
CAUTION
IMPORTANT SAFETY NOTICE:
COMPONENTS IDENTIFIED WITH THE MARK
HAVE THE SPECIAL CHARACTERISTICS FOR SAFETY.
WHEN REPLACING ANY OF THESE COMPONENTS
USE ONLY THE SAME TYPE.