Memorex MVR4041 Service Manual page 40

A B
8
7
6
W842
P.CON+5V
AUDIO_OUT-R
5
ST_SELECT
AUDIO_OUT-L
P.CON+12V
RF_CONV_A.OUT
4 TO_NORMAL_A
FROM_NORMAL_A
3
2
1
A B
G-11
C
HI-FI/DEMODULATOR SCHEMATIC DIAGRAM
C5514
0.1 F
C5521
R5519
3.3K 1/4W
50V 0.22 KA
HI-FI AUDIO/HEAD AMP/DEM IC
IC5501
R5513
AN3662FBP
2.2
2.2M
48
C5506
3.4
DEM_BLK
0.1 F
C5501
C5507
2.7
INPUT
L5501 16V 10 KA 0.1 F
4.9
100uH
C5504 C5508
2.5
0305
0.1 F 0.1 F
C5516
4.2
22
16V KA
C5509
2.3
50V KA
2.2
0
USA
AN3662FBP
1.2
C5552
4.3
16V 22 KA
L5502
11.0
100uH
C5510
W817
4.3
10
C5555 16V KA
C5511
1.0
16V
47 YK
6.3V 22 KA
C5512
2.4
16V 10 KA
R5503 C5513
2.3
1.2K
R5502 50V 1 KA
2.2
330
0.6
C5503
1
0.033 B
2.3
NC
C
D E
(SYSCON PCB)
0 3.5 2.1 2.3 4.7 4.7 0 4.9 NC 0 1.6 0 2.4 0.7 2.4
0
47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
2.4 C5540
ZZ-PROM
PILOT LOGIC
DET
2.1
MUTE VCO-F0
75uS
VCA CTL ADJ
SL
DE-EMPH
LOGIC
STEREO PLL
S/N 1.8
FILTER
LPF
SW12
L.R PNR RCH
DEMOD SW NOISE PB REC 1.8
SAP SW21
DEMOD
(L.R)/SAP
RCH
SW9 1.8
SWITCH VCO
AUDIO
MUTE FROM 1PIN LIMIT
REC LPF
2.5
R SW18
BS
PC PB LPF
HPF
AMP
SW19 HIFI C5542 0.1
0
L
R NOISE
MIX
DET
RCH BPF
MUTE 4.9
SW16 FM UM
LINER
L SW10
SW
MIX LCH BPF
C5543 0.01
SW17 0.6
HIFI
AMP HOLD
L
R BS
TIMING
PC PB LPF
FROM 3PIN 0
RFC L
SAP MIX CURR
AUDIO
C5544 0.01
LIMIT AMP 0.7
-
DET SW14
R
SW22
SW4 -
0
SW NOISE +
SW2
PNR LCH
DBX C5545 0.1
0
NOISE REDUCTION S/N
MIX DET
SW15
C5546 0.015 B
H 2.4
L REC LPF
AGC
INPUT_SW(L)
MATRIX LCH VCO SW11 C5547
L
R
2.4
INPUT_SW(R)
C5548
0.7
VREF1
2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
0 2.3 0 2.2 2.4 2.1 0.5 0 0 0 2.0 2.2 0 0 2.4
NC NC
NC NC NC
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME
NOTE: THE DC VOLTAGE AT EACH PART WAS
OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
MEASURED WITH THE DIGITAL TESTER
DURING PLAYBACK
D E
F G
FROM/TO TUNER
FRONT_A_IN-R
FRONT_A_IN-L
AUDIO_OUT-R
0.015 B
AUDIO_OUT-L
C5517
RF_CONV_A.OUT
HIFI ENV.
50V 0.22 KA
TP5501
TUNER_A
NC
D5501
V.REC_ST-H
1SS133
HIFI_ENV.DET
C5549 0.01 F
13
HIFI_H.SW
F
C5541 0.1 B
FROM/TO Y/C/AUDIO/CCD/H.AMP
F
HF2
GND
F
HF1
HF_COM
F FSC
FROM_NORMAL_A
TO_NORMAL_A
16V 10 KA
16V 10 KA
FROM/TO POWER
P.CON+5V
P.CON+12V
GND
FROM/TO SYSCON
V.REC_ST-H
HIFI_ENV.DET
HIFI_H.SW
AUDIO_MUTE-H
IIC_CLK
IIC_DATA
ST_SELECT
F G
H
8
7
6
5
4
3
2
PCB010
VMX206
1
H
G-12