Sony BVW-55 Maintenance Manual page 560

IC
AM29F040B-120JC (AMD)
C-MOS 4 M (524,288 x 8)-BIT FLASH MEMORY
—TOP VIEW—
4 3 2 1 32
5
6
7
8
9
10
11
12
13
14 15 16 17 18
PIN PIN
I/O SIGNAL I/O
No. No.
1 I A18 17 I/O
2 I A16 18 I/O
3 I A15 19 I/O
4 I A12 20 I/O
5 I A7 21 I/O
6 I A6 22 I
7 I A5 23 I
8 I A4 24 I
9 I A3 25 I
10 I A2 26 I
11 I A1 27 I
12 I A0 28 I
13 I/O DQ0 29 I
14 I/O DQ1 30 I
15 I/O DQ2 31 I
16 — GND 32 —
AN3920S (MATSUSHITA)
AN3920S-E2
VTR FM AUDIO RF AMP
—TOP VIEW—
1 GND
RF (R-CH) 2 GND
IN
6H HIGH 3
IN
+12 dB HIGH 4
IN
VAR 5
IN
RF 6
OUT
7 V
CC
ENVE 8
OUT
ENVE DET 9
OUT
RF 10
IN
2
RF (R-CH) RF AMP GAIN SW
3
6H HIGH
4
+12 dB HIGH
20
RF (L-CH) RF AMP GAIN SW
18
H SW
x 2
TRIGGER1
17
MM1
15
MM2
10
DROP OUT DETECTION
RF
ENVELOPE AMP
11
ALD
AUTO LINEAR
2-10
31 30
12
A0
11
A1
10
29
A2
9
A3
8
28
A4
7
A5
6
27
A6
5 13
A7 DQ0
27 14
26
A8 DQ1
26 15
A9 DQ2
23 17
25
A10 DQ3
25 18
A11 DQ4
4 19
24
A12 DQ5
28 20
A13 DQ6
29 21
23
A14 DQ7
3
A15
2
22
A16
30
A17
1
21
A18
22
CE
19 20
24
OE
31
WE
SIGNAL
INPUT
DQ3
A0 - A18 : ADDRESS INPUTS
DQ4
CE
: CHIP ENABLE
DQ5
OE
: OUTPUT ENABLE
DQ6
WE
: WRITE ENABLE
DQ7
CE
INPUT/OUTPUT
A10
DQ0 - DQ7 : DATA INPUT/OUTPUT
OE
A11
A9
A8
A13
A14
A17
WE
V
DD
INPUT
ALD : AUTO LINEAR DETECT
20 RF (L-CH)
IN
H SW : HOLD SWITCH
MM1, MM2 : MONO MULTI
19
VAR : VARIABLE AMP CONTROL
18 H SW
IN
OUTPUT
AHSW : AUDIO HOLD SWITCH
17 MM1
IN
DO DET : DROP OUT DETECT
ENVE : ENVELOPE
16 AH SW
OUT
ENVE DET : ENVELOPE DETECTOR
15 MM2
IN
14 S/H
OUT
13 DO DET
OUT
12 LINEAR HIGH
OUT
11 ALD
IN
SW3
VARIABLE
BUFF
AMP CONTROL
FF
MM1 TRIGGER2 MM2 OR
TRIGGER3
AN3922NS (MATSUSHITA)
AN3922NS-E2
VTR, FM AUDIO MODULATOR AND DEMODULATOR
—TOP VIEW—
RA SIG 1
IN
H AMP 2
IN
H CONT 3
IN
GND
4
(AUDIO)
HOLD 5
OUT
6 V
CC
SW NR 7
IN
SW NR 8
OUT
1/2 V 9
CC
H.PULSE 10
IN
INPUT
FM DEMOD CONT : FM DEMODULATION CONTROL
H AMP : HOLD AMP
H CONT : HOLD CONTROL
H PULSE : HOLD PULSE
PB RF SIG : PB RF SIGNAL
RA SIG : REC AUDIO SIGNAL
REC/PB CONT : REC/PB CONTROL
VCO FREQ ADJ : VCO FREQUENCY ADJUSTMENT
VCO OSC CONT : VCO OSCILLATION CONTROL
OUTPUT
FM DEMOD : FM DEMODULATION
FM MOD : FM MODULATION
INPUT/OUTPUT
SW NR : SWITCH NOISE REDUCTION
OTHERS
VCO CAP : VCO CAPACITOR
<RF BLOCK>
1
RA SIG AMP
3 MHz OSC
20
VCO OSC
CONT
CONTROL
13
FM DEMOD
BUFFER
CONT
11
PB RF SIG
<AUDIO BLOCK>
2
AMP
H AMP
3
H CONT
10
H PULSE
7
SW NR
5
VAR
6
RF
16
AH SW
14
S/H
13
DO
DET
8
ENVE
9
ENVE
DET
12 LINEAR
HIGH
20 VCO OSC CONT
IN
19 VCO CAP
18 VCO CAP
17 VCO FREQ ADJ
16 FM MOD
OUT
GND
15
(RF)
14 FM DEMOD
OUT
13 FM DEMOD CONT
IN
12 REC/PB CONT
IN
11 PB RF SIG
IN
VCO VCO
FREQ CAP
ADJ
17 18 19
VCO
REC/PB
CONTROL
PB
RF
CONTROL
LIMITER
5
HOLD BUFFER
HOLD
NOISE
8
SW NR
REDUCTION
16
FM MOD
12
REC/PB CONT
14
F.F
FM DEMOD
BVW-55