Read Sony HCD-R500 / HCD-RX55 / MHC-R500 / MHC-RX55 Service Manual online
HCD-R500/RX55
5-2. BLOCK DIAGRAMS
— DECK SECTION —
— 15 —
— 16 —
HP901
PB
HEAD
TAPE B
HRP901
REC/PB
REC/PB
HEAD
TAPE A
R CH
R CH
R CH
PLAY/REC
CONTROL
CONTROL
Q203,205
PLAY/REC
CONTROL
CONTROL
DRIVE
Q207
AMS
MUTE
Q551,552
PLAY/REC
CONTROL
CONTROL
D201
L251
BIAS OSC
BIAS
OSC
OSC
Q251
HE901
ERASE
HEAD
R CH
1
2
9
3
REC OUT
PB OUT
A/B
5
19
11
10
REC/PB
EQ AMP
IC201
Q251
D202
: FM
: CD
• Signal Path
• RCH is omitted
B
CD
SECTION
TU L
11
9
10
ST IND
TU MUTE
DO
CD L
12
CONTROL
3
2
1
CLK
14
DI
15
CE
13
SELECTOR
IC301
CLK
DI
CE
LINE AMP
IC303
1
3
Q709
MUTE
1
10
4
POWER AMP
IC401
SPEAKER
RELAY
DRIVE
Q706
Q708
1
2
6
IC402
RL701
R CH
SPEAKER
PHONES
JK302
JK303
SCOR
SENS
SQSO
XLAT
SQCK
DATA
DI
CLK
CE
STB
26
STB
21
CE
22
CLK
23
DO
52
FOK
53
COUNT
18
D
ATA
19
SQSO
51
SENS
38
SCOR
24
DI1
MUTE
DRIVE
Q410
Q604
MUTE
MUTE
SWITCH
Q603
4
TU MUTE
47
FM ST
IND
3
SYSTEM MUTE
2
POWER
LED DRIVE
IC603
36
ALA
TCH
13
LED
DRIVE
DI
CLK
Q608-613
RESET
SWITCH
POWER
DOWN DET
Q601
10
RESET
15
POWER DOWN
Q602
LED606-611
LED601-604
Q602
D602
X2
11
X1
12
VR UP
44
X601
4.19MHz
VR DOWN
45
VR601
VOLUME
PIC UP
55
PIC DOWN
56
TRA
Y
OPEN
59
TRA
Y
CLOSE
60
TURN T
ABLE
58
DISC COUNT
57
A
B
S02
TRAY
OPEN/CLOSE
DET
S03
DISC
COUNTER
DET
S04
TURNTABLE
OPERATION
OPERATION
DET
S01
CD DECK
UP/DOWN
DET
3
2
Q601
RM601
REMOTE
CONTROL
RECEIVER
39
REMOTE
64
78
KEY
MATRIX
S601-628
P1
P21
100
86
G1
G15
. 81
85
33
29
KI0
KI4
FLD601
FLD DISPLAY
SYSTEM CONTROLLER/
FLD DRIVER
IC601
+5.6V
REG
Q409
SITCHING
Q415,416
+11.5V
(SWITCHED)
+11.5V
FILTER
Q403
+7.5V
REG
Q702
+7.5V
+12V
REG
REG
Q701
RECT
D705-708
P MUTE
CONT
Q713
AC OFF
DET
Q714
D718
D720
RECT
D701
-12V
-30V
+30V
-27V
REG
Q703
-27V
VOLTAGE
DOUBLER
D731,732
AC
IN
PT001
AC3.4V
AC3.4V
12
16
A
TUNER
SECTION
: PB (DECK A)
: PB (DECK B)
: REC (DECK A)
Q201
BIAS
SWITCH
CONTROL
SWITCH
Q208,209
Q252,253
+12V
REC
MUTE
Q213
6
TAPE A/B
MIX OUT
MD L
JK301
LINE
OUT L
9
8
6
IC302 (2/2)
11
10
12
IC302 (1/2)
Q417
Q301
62
SERI MUTE
6
T
APE REC
61
AMS
BUS REGISTER
IC501
14
REC
12
BIAS
11
A/B
13
REC MUTE
2
S/I
3
CLK
10
Q'S
1
STB
DECK STB
43
MOTOR
B+ SW
Q501,502
SOL B
DRIVE
Q503,504
DO
CLK
SHIFT REGISTER
IC502
2
MTR +12V
9
QH
1
S/L
DECK DATA
42
DECK S/L
41
SOL A
DRIVE
Q505,506
PLAY
4
SOL A
5
SOL B
6
+12V
F REC
3
R REC
4
PHOTO A
5
PHOTO B
6
A MODE
11
B MODE
12
A HALF
13
B HALF
14
HALF B
HALF A
MODE B
MODE A
PHOTO B
PHOTO A
REC REV
REC FWD
SOL B
SOL A
SOL B
MOTOR H
MOTOR L
TAPE
SPEED
SFR 501
MECHA BLOCK
12
17
CE
CLK
DO
LED
DRIVE
Q606,607
10
5
LED DRIVE
IC602
2
3
4
11
12
LED605
1
3
2
Q605,615
SW
MODE
13
+5.6V
SW101
10k
9k
JOG A
49
JOG B
50
VR612
MULTI JOG
A
B
4
L
T
COM
SURROUND
CONTROL
Q307
Q310
5
SURROUND
4
3
2
Q331
HIGH
HIGH
Q308
NORMAL
7
DBFB NORMAL
8
DBFB HIGH
HP AMP
IC401
Q408
MUTE
SP
DET
Q404
+12V
-12V
REG
Q401
: MD
17
SQCK
20
XLA
T
COUNT
FOK
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