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4.6
MAIN (FMA/DEMOD) SCHEMATIC DIAGRAM
5
4
TO
VIDEO/N.AUDIO
3
2
1
A
0
3
MAIN(FMA/DEMOD)
TO SW.REG
AL5.8V
SW5V
GND
SW12V
TO TUNER
C6506
COMP
SIF
RF_AUDIO
Fsc
NA_REC
NA_PB
GND
TO
TERMINAL
LINE_OUT[R]
LINE_OUT[L]
F.AUDIO[R]
F.AUDIO[L]
A.IN1[R]
A.IN1[L]
GND
#DIFFERENCE TABLE 1
#DIFFERENCE TABLE 2
R2203
R2204
REAR1 INPUT
S-VHS
R2207
R2208
YES
NO
B
DTC144WUA
Q2201
PDTC144WU
DTA144WUA
UN521E
PDTA144WU
RN1309
UN511E
Q2202
RN2309
R2220
OPEN
L6501
SHORT
R2209
R2211
100
3.3k
Q2203
R2210
4.7k
2SC4081/QRS/
2SD1819A/QRS/
2PC4081/R/
R2213
4.7k
Q2204
R2212
R2214
3.3k
100
R2215
220
C2216
C2217
47
/16
OPEN
R2218
3.9k
: USED
: NOT USED
#DIFFERENCE TABLE 3
FM REC LEVEL ADJ.
FLYING ERASE
Q2251-Q2254
Q2255
R2254,R2256
VR2251
R2259
R2258,TP2254
YES
10k
NO
SHORT
C2222
0.01
C6504
0.1
1k
C6517
R6502
0.22
3.3k
C6508
0.1
Pilot_DET
C6509
0.1
SAP_Noise_DET
Vcc(MTS)
C6512
0.022
SAP_DET
C6510 C6511
OPEN
0.01
C2214
10
/25
LINE_OUT(R)
C6513
L+R_REF
2.2
/50
GND2
LED
C2215
10
/25
LINE_OUT(L)
Vcc2(12V)
R2216
1k
C2218
10
/25
RFC_OUT
R2217
C2219
22
/16
4.7k
RFC_AGC_DET
C2220
10
/25
NORMAL_OUT
C2221
0.022
NORMAL_IN
R2219
1k
C6514
0.022
Spectral_DET1
C6515
3.3
/50
Spectral
timing
IC2201
AN3663FBP
C2261,C2262
YES
NO
C
D
R2202
6.8k
R2201
47k
#
R2203
47k
4-13
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