Sony HCD-R500 / HCD-RX55 / MHC-R500 / MHC-RX55 Service Manual ▷ View online
— 65 —
5-13.
IC PIN FUNCTION
IC601 µPD780205FG (SYSTEM CONTROL) / PANEL BOARD
Pin No.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
I/O
—
O
O
O
O
O
O
O
—
—
I
I
—
—
I
—
O
O
I
O
O
O
O
I
—
O
O
—
I
I
I
I
I
O
—
O
—
I
I
—
O
I
O
I
I
—
I
I
I
I
Pin Name
VDD
POWER OUT
S. MUTE OUT
TU. MUTE OUT
TUNED OUT
TAPE REC OUT
DBFB NORMAL
NC
NC
RESET
X2
X1
VSS
NC
POWER DOWN IN
VDD
SOCK
DATA
SOSO
XLAT
CE
CLK
DO
DI
VSS
CD STB
FLAT
VSS
K4
K3
K2
K1
K0
AVDD
AVREF
A LATCH
B LATCH
SCOR
REMOTE IN
VSS
NC
VSS
DECK STB
VR UP
VR DOWN
VDD
FM ST IN
SYNC REC IN
VSS
VSS
Description
VDD
Power switch output. ON: H, OFF: L
System mute output. ON: H, OFF: L
Tuner mute output. ON: H, OFF: L
Surround output. ON: H, OFF: L (Not used)
Function tape output. Tape: H, Others: L (Not used)
DBFB normal (U2: DBFB). ON: H, Others: L
DBFB high. ON: H, Others: L (Not used)
Not used
Reset input
X’tal 4.194314 MHz
X’tal 4.194314 MHz
Ground
Not used (open)
Power down input. AC ON: H, AC OFF: L
VDD
CXD2508A SQCK, CLOCK output
CXD2508A data output
CXD2508A SQSO input
CXD2508A XLAT output. Latch: L, Others: H
Chip enable output to LC7218, LC75392. Data: H, Address: L
CLK output
Data output
Data input
Ground
STB output to SN74HC4094. STB: L, Others: H
Flat output. Flat: H, Others: L (Not used)
Ground
Key input 4 to A/D
Key input 3 to A/D
Key input 2 to A/D
Key input 1 to A/D
Key input 0 to A/D
VDD of A/D converter
Reference voltage of A/D converter
Latch output to BU2092. Latch: H, Others: L
Not used
CXD2508A SCOR
Remote signal input. ON: H, OFF: L
Ground
Shift or load output to SN74HC165. Shift: H, Load: L (Not used)
Data input to SN74HC165 (Ground)
STB output to BU2114, SN74HC4094. STB:H, Others: L (Not used)
VR encoder A input. ON:L, OFF: H
VR encoder B input. ON:L, OFF: H
VDD
FM stereo indicator input. Stereo:L, Mono: H
Synchro record input. Record:L, Other: H
CD encoder A input. ON: L, OFF: H (Ground)
CD encoder B input. ON: L, OFF: H (Ground)
— 66 —
Pin No.
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
I/O
I
I
I
—
I
I
I
I
I
I
I
O
I
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
—
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
O
Description
Input from CXD2508A SENS
Input from CXD2508A FOK. OK: H, Others: L
Input from CXD2508A COUNT
Ground
Input from CD mechanism pick up switch. Up: L, Others: H
Input from CD mechanism pick down switch. Down: L, Others: H
Input from CD mechanism disc count switch. Count: L, Others: H
Input from CD mechanism turn table switch. ON: L, OFF: H
Input from CD mechanism tray open switch. Open: L, Others: H
Input from CD mechanism tray close switch. Open: L, Others: H
AMS signal input. During program: H, Interval between programs: L
Serial mute (tuner) output (Not used)
Input from destination select mode switch. ON: H, OFF: L
FLD segment signal output P1. ON: H, OFF: L
FLD segment signal output P2. ON: H, OFF: L
FLD segment signal output P3. ON: H, OFF: L
FLD segment signal output P4. ON: H, OFF: L
FLD segment signal output P5. ON: H, OFF: L
FLD segment signal output P6. ON: H, OFF: L
FLD segment signal output P7. ON: H, OFF: L
FLD segment signal output P8. ON: H, OFF: L
FLD segment signal output P9. ON: H, OFF: L
FLD segment signal output P10. ON: H, OFF: L
FLD segment signal output P11. ON: H, OFF: L
FLD segment signal output P12. ON: H, OFF: L
FLD segment signal output P13. ON: H, OFF: L
FLD segment signal output P14. ON: H, OFF: L
FLD segment signal output P15. ON: H, OFF: L
(–) negative power supply
FLD segment signal output P16. ON: H, OFF: L
FLD segment signal output P17. ON: H, OFF: L
FLD segment signal output P18. ON: H, OFF: L
FLD segment signal output P19. ON: H, OFF: L
FLD segment signal output P20. ON: H, OFF: L
FLD segment signal output P21. ON: H, OFF: L
FLD grid signal output 15. ON: H, OFF: L
FLD grid signal output 14. ON: H, OFF: L
FLD grid signal output 13. ON: H, OFF: L
FLD grid signal output 12. ON: H, OFF: L
FLD grid signal output 11. ON: H, OFF: L
FLD grid signal output 10. ON: H, OFF: L
FLD grid signal output 9. ON: H, OFF: L
FLD grid signal output 8. ON: H, OFF: L
FLD grid signal output 7. ON: H, OFF: L
FLD grid signal output 6. ON: H, OFF: L
FLD grid signal output 5. ON: H, OFF: L
FLD grid signal output 4. ON: H, OFF: L
FLD grid signal output 3. ON: H, OFF: L
FLD grid signal output 2. ON: H, OFF: L
FLD grid signal output 1. ON: H, OFF: L
Pin Name
SENS
FOK
COUNT
VSS
PIC UP
PIC DOWN
DISC COUNT SW
TURN TABLE SW
TRAY OPEN SW
TRAY CLOSE SW
VSS
SERI MUTE
(TUNER)
MODE SW IN
P1
P2
P3
P4
P5
P6
P7
P8
P9
P10
P11
P12
P13
P14
P15
–V LOAD
P16
P17
P18
P19
P20
P21
G15
G14
G13
G12
G11
G10
G9
G8
G7
G6
G5
G4
G3
G2
G1
SECTION 6
EXPLODED VIEWS
NOTE:
•
-XX, -X mean standardized parts, so they may
have some differences from the original one.
have some differences from the original one.
•
Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
are seldom required for routine service. Some
delay should be anticipated when ordering these
items.
•
The mechanical parts with no reference number
in the exploded views are not supplied.
in the exploded views are not supplied.
•
Hardware (# mark) list and accessories and
packing materials are given in the last of this
parts list.
packing materials are given in the last of this
parts list.
— 67 —
When indicating parts by reference number,
please include the board name.
please include the board name.
The components identified by mark
!
or
dotted line with mark
!
are critical for safety.
Replace only with part number specified.
1
2
3
4
5
6
7
8
9
10
CD mechanism deck
PT302
12
not supplied
#10
#10
#10
#10
#11
#11
#3
#11
#12
#3
#11
#11
#11
#3
#14
#14
#4
#4
#3
#11
#11
#11
#11
#10
#14
#2
#3
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
6-1. CABINET SECTION
1
4-210-584-01 WINDOW, CD
* 2
4-211-426-01 COVER, TOP (R500)
* 2
4-210-589-01 COVER, TOP (RX55)
3
4-210-579-01 HOLDER, MAIN PC BOARD
* 4
A-4405-481-A MAIN BOARD, COMPLETE
* 5
4-210-591-01 CABINET (A), REAR
* 6
4-210-590-01 COVER, REAR (RX55)
* 6
4-211-418-01 COVER, REAR (R500)
* 7
A-4405-478-A AMP BOARD, COMPLETE
* 8
1-670-445-11 FUSE BOARD
!
9
1-556-035-00 CORD, POWER (UK)
!
9
1-765-558-11 CORD, POWER (EXCEPT UK)
* 10
3-703-244-00 BUSHING (2104), CORD
12
4-210-580-01 SPACER (SCC-20), PC BOARD
!
PT302
1-431-951-11 TRANSFORMER, POWER
— 68 —
Ref. No.
Part No.
Description
Remarks
Ref. No.
Part No.
Description
Remarks
6-2. FRONT PANEL SECTION
51
55
52
56
57
53
54
59
82
58
60
61
62
63
80
81
63
81
79
68
67
69
78
71
70
66
64
65
86
72
77
74
76
84
75
83
85
Cassette mechanism deck
79
73
#15
#15
#15
#15
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
#16
not supplied
not
supplied
supplied
not supplied
51
4-210-586-01 WINDOW (R), CASSETTE
52
4-211-425-01 DOOR (R), CASSETTE (R500)
52
4-210-588-01 DOOR (R), CASSETTE (RX55)
53
4-210-577-01 SPRING (R), CASSETTE
54
4-211-433-01 HOLDER (R), CASSETTE (R500)
54
4-210-572-01 HOLDER (R), CASSETTE (RX55)
55
4-210-585-01 WINDOW (L), CASSETTE
56
4-211-424-01 DOOR (L), CASSETTE (R500)
56
4-210-587-01 DOOR (L), CASSETTE (RX55)
57
4-210-576-01 SPRING (L), CASSETTE
58
4-211-432-01 HOLDER (L), CASSETTE (R500)
58
4-210-571-01 HOLDER (L), CASSETTE (RX55)
59
4-992-154-01 RUBBER, FOOT
60
4-210-592-01 WINDOW, DISPLAY
61
4-210-581-01 HOLDER, CD BUTTON
62
4-962-708-01 EMBLEM (4-A), SONY
63
4-992-131-01 DAMPER (GRY), GEAR
64
4-211-428-01 BUTTON, POWER (R500)
64
4-210-553-01 BUTTON, POWER (RX55)
65
4-211-429-01 BUTTON, CLOCK (R500)
65
4-210-554-01 BUTTON, CLOCK (RX55)
66
4-211-431-01 BUTTON (B), CD (R500)
66
4-210-570-01 BUTTON (B), CD (RX55)
67
4-210-556-01 BUTTON, MODE
68
4-211-430-01 BUTTON, REC (R500)
68
4-210-560-01 BUTTON, REC (RX55)
69
4-210-562-01 KNOB, VOLUME
70
4-210-561-01 KNOB, JOG
71
4-210-563-01 RING, JOG
72
4-210-593-01 PLATE, DISPLAY
73
4-210-558-01 BUTTON, SURROUND
74
4-210-557-01 BUTTON, NEXT
75
4-210-555-01 BUTTON, FUNCTION
76
4-210-559-01 BUTTON, UP/DOWN
77
4-210-552-01 PANEL (B), FRONT
78
4-210-574-01 WASHER (9Q), VOLUME
79
4-210-578-01 SPRING, EJECT LEVER
80
4-210-575-01 LEVER, EJECT
81
4-210-573-01 HOLDER, EJECT
82
4-211-427-01 PANEL (A), FRONT(R500)
82
4-210-551-01 PANEL (A), FRONT (RX55)
* 83
A-4405-484-A PANEL BOARD, COMPLETE
* 84
1-670-441-11 VOLUME BOARD
* 85
A-4414-609-A DECK BOARD, COMPLETE
* 86
1-670-443-11 CD BUTTON BOARD
Click on the first or last page to see other HCD-R500 / HCD-RX55 / MHC-R500 / MHC-RX55 service manuals if exist.