Panasonic PV-GS29PL, Service Manual

Page: 80 / 161

PV-GS29PL/PV-GS39PL/PV-GS69PL
VIDEO SIGNAL PROCESS II BLOCK DIAGRAM
VIDEO SIGNAL PROCESS II BLOCK DIAGRAM
REC VIDEO SIGNAL PB VIDEO SIGNAL REC AUDIO SIGNAL PB AUDIO SIGNAL
MAIN P.C.B. CYLINDER UNIT
DBR (0-3)
IC3201 (FORMATTING/EQUALIZER)
FP5
7
FP5
5
FP5
6
FP5
4
8
27
26
31
30
33
28
29
32
GCA DRIVE
CH1
HEAD
AMP
CH2
HEAD
AMP
AGC
DET
(FROM SAFETY TAB SW)
S-TAB ON(L)
LOGIC
MODULATOR
/DEMODULATOR
14
15
16
17
18
19
AMP AMP
LPF
LOGIC
IC5001 (HEAD AMP)
CH 1
HEAD
CH 2
HEAD
FROM SYSTEM
CONTROL
BLOCK DIAGRAM
TO/FROM VIDEO
SIGNAL PROCESS I
BLOCK DIAGRAM
43 1
11
AGC
AMP
6
35
39
86
89
RESET(L) READ(H) VAL
27MHz
CLOCK
50
10 51
33
9
11
3
AMP A/D CONVERTER
AMP A/D CONVERTER
REC-C CONTROL
REC CLOCK
EQ HOLD
REC CONTROL
HEAD SW PULSE 2
HEAD SW PULSE 1
PB(H)
REC ON/OFF CONTROL
EQUALIZER
ATF DET BPF
AGC CONTROL
VITERBI
49
34
53
45
44
54
48
MICROCONTROLLER
INTERFACE
RESET(L)
39
RESET(L)
109 81 79 84
TO/FROM VIDEO
SIGNAL PROCESS I
BLOCK DIAGRAM
74 76 78
HEAD SW PULSE 1
VAL
READ(H)
27MHz CLOCK
ADDA (0-3)
PV-GS29PL / PV-GS39PL / PV-GS69PL
80