Service manual
CRITICAL SAFETY COMPONENTS ARE IDENTIFIED BY THE LETTER “X“ IN THEIR
COMPONENT DESIGNATORS. REPLACE ONLY WITH PART NUMBERS SPECIFIED.
ALL SYMBOLS WITH “M” ON END OF DESIGNATOR
INDICATE SURFACE MOUNTED COMPONENT
6-18
GA SHEET 18
GA2 BLOCK DIAGRAMS
12111
0
9
G
F
E
D
C
B
A
87654321
BLOCK DIAGRAM No. 8
IC1400
PIN 8
SUPPLY
TO 1/2 VCC
GAIN SET
L-R
OPTIONAL
12
SUPPLY
1/2 VCC
VCC
BYPASS
1/2 VCC
19
8
6
9
CONSTANT
DET TIME
CORNER
BPF
15161718
BPF
R
L
13
14
X
I
R
T
A
M
SUPPLY
VCC
TO 1/2
GAIN
L-R
11
DE-EMP
2ND
VCC
10VCA
7
L-R
STEREO/MONO
STEREO SENSE
21
20
DEMO
STEREO
L-R
L+R
DE-EMP
DE-EMP
TO PIN 18
SAP TRAP
SWITCH
BYPASS
5
IN
WIDEBAND
OUTPUT
PULSE AMPLIFIER
POWER SUPPLY
STOPPING PIN
OSCILLATION
INPUT PIN
POWER SUPPLY
VERTICAL OUTPUT
OUTPUT PIN
VERTICAL
GND
76543
21
PUMP-UP
VERTICAL DRIVER
OUTPUT
VERTICAL
PROTECTOR
THERMAL
ICX2200
BLOCK DIAGRAM No. 7
N/C
EXT.AUDIO
56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30
DE-EMPHASIS
AUDIO TV IN
LIMITER IN
SIF GND
PIF TANK
cc
PIF TANK
SIF V
TV DET. OUT
cc
V
CHROMA IN
AFT
Y IN
DC REST
AV/SW OUT
BLACK DET
EXT. VIDEO
ACL
TV IN
ABL
D. GND
32fHVCO
H. AFC
H. OUT
Sync. OUT
FBP IN
X-RAY
29
cc
SDA
SCL
H. V
282726
V. SEPA FILTER
V. RAMP
NFB
V. O UT
B OUT
G OUT
R OUT
cc
D. V
ANALOG B IN
2524232221191817
ANALOG G IN
ANALOG R IN
F-BLK
GND
VCXO
APC FILTER
LOOP FILTER
16151413121110
cc
PIF V
PIF IN
PIF IN
PIF GND
AGC FILTER
SIF TANK
RF AGC
SOUND OUT
N/C
987654321
ATT
AGC
RF
x2
cc
9.0 V
H. V
cc
3.3 V
D. V
cc
V
PIF
GND
PIF
GND
DET
AGC
DET
LOCK
SW
APC
VCXO
Analogue RGB
LPF
7,17.LOO HU
Cut-off/Drive
V C/DV SEPA
H SEPA
H C/D
V. RAMP
%XV,QWHUIDFH
H
VCO
32f
AFT
&ODPS
AFC-2
AFC-1
+5$03
;5$<
H. OUT
Trap
3.58
BPF
cc
cc
V
VSIF
GND
SIF
07;
Bright
:3/
&RQWUDVW
6KDUSQHVV
'(02
&RORU
Y-DL
6PRRWKLQJ
5HVWR UHW LRQ
DC
WPS
Streatch
Black
ACC
DET
I
DET
Q
o
90
VCO
/LPLWHU
DET
FM
20
ICX3431
BLOCK DIAGRAM No. 5
Q-SWTICHING
Q-LIMITER
R-ANTISAT
R-DIV2
R-BIAS
DZREG
Q-REG
R-SHUNTR-DIV1
1235
4
IC2100
BLOCK DIAGRAM No. 6