Sony HCD-VR50 / HCD-VR50XR / HCD-VR70 / LBT-VR50 / LBT-VR50R Service Manual ▷ View online
– 109 –
Pin No.
Pin Name
I/O
Function
50
STEREO
I
Stereo detection for tuner
51
TUNED
I
Tuned detection for tuner
52
ST-CE
O
Tuner chip enable output
53
ST-DOUT
O
Tuner data output
54
ST-DIN
I
Tuner data input
55
ST-CLK
O
Tuner clock output
56
SENS
I
BD Condition signal input
57
HOLD
O
MODE signal output
58
XLT
O
CD latch signal output
59
XRST
O
CD reset signal output
60
DISC-SENS
I
Slit sensor of disc table input (Connected to ground)
61
T-SENS
I
CD table detection signal input
62
VDD
–
Power supply (+5V)
63
TBL-L
O
Table motor control output
64
VSS
I
Ground
65
TBL-R
O
Table motor control output
66
LOAD-OUT
O
Loading motor control signal output (Not used)
67
LOAD-IN
O
Loading motor control signal input (Not used)
68
ENC 3/UP-SW
I
UP-SW detect input
69
ENC 2/DISC-LED
O
LED driver output
70
ENC 1
I
(Connected to ground)
71
OUT-OPEN
O
(Connected to ground) Loading out detection signal output
72
B-TRG
O
B deck trigger motor control output
73
A-TRG
O
A deck trigger motor control output
74
CAP-M-COT2
O
Capstan motor REW/FWD/STOP signal output
75
CAP-M-COT1
O
Capstan motor REW/FWD/STOP signal output
76
CAP-M-H/L
O
Capstan motor High/Low speed select signal output
77
AMS-IN
I
AMS signal input
78
TC-MUTE
O
TC line mute ON/OFF selection output
79
R/PB/PAS
O
REC/PB/PASS selection output
80
NR-ON/OFF
O
DOLBY NR ON/OFF signal output
81
REC-MUTE
O
REC mute ON/OFF selection output
82
BIAS
O
Bias ON/OFF signal output
83
EQ-H/N
O
Equalizer High/Normal select output
84
PB-A/B
O
PB A deck/B deck select output
85
ALC
O
ALC ON/OFF output signal
86
B-PLAY-SW
I
B deck play detect
87
A-PLAY-SW
I
A deck play detect
88
A-HALF
I
A Deck half detector signal input
89
B-HALF
I
B Deck half detector signal input
90
B-SHUT
I
B Deck reel pulse detector
91
A-SHUT
I
A Deck reel pulse detector
92
SOFT-TEST
O
Software test port (Not used)
93
HP-MUTE
O
Head phone mute signal output
94
KEY/CD-ADJ
I
KEY (use the jig)/CD adjust point port
95
MODEL IN
I
MODEL input
96
AVSS
–
Analog ground
97
SPEC-IN
I
Specifications input
98
VREF
I
Analog reference voltage input
99
AVCC
–
Analog power supply (+5V)
100
TC-RELAY
O
REC/PB head selection output for IC602
– 110 –
• IC601 DISPLAY CONTROL (TMP88CS76F-6004) (PANEL FL board)
Pin No.
Pin Name
I/O
Function
1
SIRCS
I
Remote commander signal input
2
JOG A
I
Rotary encoder (S702) pulse input
3
LED SCK
O
LED clock signal output
4
LED LATCH
O
LED latch signal output
5
LED DAT
O
LED serial data output
6
LED POWER
–
Not used
7
LED SEL
O
LED select signal output
8
JOG B
I
Rotary encoder (S702) pulse input
9
VOLUME A
I
10
VOLUME B
I
11 to 15
KEY 0 to KEY 4
I
Key input
16 to 20
BPF 0 to BPF 4
I
Rec level signal input
21
ALL BAND
O
Rec level signal output for auto DBDF
22
WAKE UP
O
Gradation right/WAKE UP signal output
23
Vss
–
24
VAss
–
25
VAref
I
Analog reference voltage input
26
VDD
–
Power supply (+5V)
27 to 40
GR 3 to GR 16
O
FL gride signal output
41
VDD VFT
–
Power supply (+5V) for VFT
42, 43
GR 1, GR 2
O
FL gride signal output
44
SEG 0
O
FL segment signal output (Not used)
45 to 67
SEG 1 to SEG 23
O
FL segment signal output
68
Vkk
–
Power supply (-25V) for FL segment signal output
69
Vdd
–
Power supply (+5V)
70
X in
I
X’tal (12.5MHz)
71
Vss
–
Ground
72
X out
O
X’tal (12.5MHz)
73
RESET
I
Reset signal input from main controller
74
DAILY LED
O
75
REC LED
O
76
TEST
I
Connected ground
77
LED-ECO
O
LED driver output
78
I
2
C DATA
I
I
2
C SDA input from master controller
79
I
2
C CLK
I
I
2
C SCL input from master controller
80
D-SW
I
Door switch signal input
Rotary encoder (S701) pulse input
Ground
LED driver output
– 111 –
SECTION 8
EXPLODED VIEWS
8-1. CASE AND BACK PANEL SECTION
NOTE:
• Items marked “*” are not stocked since they are
seldom required for routine service. Some delay
should be anticipated when ordering these items.
should be anticipated when ordering these items.
• The mechanical parts with no reference number in
the exploded views are not supplied.
• Hardware (# mark) list and accessories and pack-
ing materials are given in the last of this parts list.
The components identified by
mark
mark
! or dotted line with mark
! are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
1-769-977-11 WIRE (FLAT TYPE) (13 CORE)
* 2
4-214-777-31 CASE
3
4-214-791-01 PANEL, BACK (VR50:SP,MY)
3
4-214-791-11 PANEL, BACK (EA)
3
4-214-792-01 PANEL, BACK (VR70:SP,MY)
• Abbreviation
EA
: Saudi Arabia model
SP
: Singapore model
MY
: Malaysia model
IA
: Indonesia model
3
4-214-792-11 PANEL, BACK (IA)
4
3-363-099-01 SCREW (CASE 3 TP2)
5
1-693-420-12 TUNER UNIT (FM/AM)
M901
1-698-792-11 FAN, DC (VR50)
M901
1-763-072-11 FAN, DC (VR70)
4
4
4
2
3
4
5
1
M901
FRONT PANEL
#3
#3
#3
#3
#3
#3
#3
#3
#3
#3 (VR50)
#3 (VR50)
#3 (VR70)
#2
#3
#1
#1
#1
#1
– 112 –
8-2. FRONT PANEL SECTION 1
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
59
4-214-717-01 CURSOR
60
4-214-756-01 KNOB (MICROPHONE)
61
1-773-002-11 WIRE (FLAT TYPE) (15 CORE)(80mm)
62
1-773-034-11 WIRE (FLAT TYPE) (15 CORE)(420mm)
* 63
4-949-935-81 CUSHION (FL)
* 64
4-214-749-01 HOLDER (925), FL TUBE (VR70)
* 64
4-214-750-01 HOLDER (915), FL TUBE (VR50)
65
4-951-620-01 SCREW (2.6X8), +BVTP
FL601
1-517-839-11 INDICATOR TUBE, FLUORESCENT (VR70)
FL601
1-517-840-11 INDICATOR TUBE, FLUORESCENT (VR50)
51
4-214-716-01 KNOB (VOL)
* 52
1-672-193-11 TC-A BOARD
* 53
1-672-194-11 TC-B BOARD
* 54
1-672-190-12 FRONT INPUT BOARD
55
A-4417-554-A JACK BOARD, COMPLETE
* 56
A-4426-366-A PANEL FL BOARD, COMPLETE (VR50)
* 56
A-4426-393-A PANEL FL BOARD, COMPLETE (VR70)
57
A-4417-467-A PANEL VR BOARD, COMPLETE (VR70)
57
A-4417-557-A PANEL VR BOARD, COMPLETE (VR50)
58
4-948-236-21 CUSHION (107)
FL601
Supplied with
J803
J803
Supplied with
J802
J802
not supplied
Supplied with
J801
J801
63
63
64
not supplied
not supplied
not supplied
#3
#3
not supplied
Supplied with
RV850
RV850
51
53
61
62
54
55
52
57
65
59
60
56
65
65
65
65
65
65
65
65
65
65
65
65
58
Click on the first or last page to see other HCD-VR50 / HCD-VR50XR / HCD-VR70 / LBT-VR50 / LBT-VR50R service manuals if exist.