Sony CX-JTV8 / JAX-TV8 Service Manual ▷ View online
61
CX-JTV8
•
PANEL BOARD IC901 LC876696B-5IH1 (SYSTEM CONTROLLER)
Pin No.
Pin Name
I/O
Description
1
O-SYS-MUTE
O
Line muting on/off control signal output terminal “H”: muting on
2
O-BU9262AFS SLT
O
Serial data latch pulse signal output to the digital echo “H” active
3
O-BU9262AFS SI
O
Serial data output to the digital echo
4
O-SYS RES
O
Reset signal output to the motor/coil driver, MPEG audio/video decoder and D/A converter
“L”: reset
“L”: reset
5
I-SYS-CS
I
Chip select signal input from the MPEG audio/video decoder
6
O-SYS-REQ
O
Request signal output to the MPEG audio/video decoder
7
O-M61529 CLK
O
Serial data transfer clock signal output to the electrical volume
8
O-BU2099 LCK
O
Serial data latch pulse clock signal output to the LED driver/tape mechanism controller, multi
controller and bass boost controller
controller and bass boost controller
9
O-LC72121 CE
O
Chip enable signal output to the tuner unit
10
O-SYS-OK
O
Acknowledge signal output to the MPEG audio/video decoder
11
RESET
I
System reset signal input from the reset signal generator “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
12
XT1
I
Sub system clock input terminal (32.768 kHz)
13
XT2
O
Sub system clock output terminal (32.768 kHz)
14
VSS1
—
Ground terminal
15
CF1
I
Main system clock input terminal (8 MHz)
16
CF2
O
Main system clock output terminal (8 MHz)
17
VDD1
—
Power supply terminal (+3.3V)
18
I-POWER MONI
I
System malfunction signal (hold signal) input from the power amplifier circuit
19
NC
O
Not used
20
I-LEVEL
I
Level meter input from the electrical volume
21
I-MIC
I
Mic audio signal input terminal Not used
22
I-CDM SW
I
Disc tray address detection signal and CD tray open/close detection signal input terminal
(A/D input)
(A/D input)
23
I-VACS
I
VACS detection signal input terminal Not used
24 to 26
I-KEY3 to I-KEY1
I
Front panel key input terminal (A/D input)
27
I-POWER DOWN
I
AC detection signal input terminal “L”: power down
28
I-RMC
I
Remote control signal input terminal
29
NC
O
Not used
30 to 41
G12 to G1
O
Grid drive signal output to the fluorescent indicator tube
42 to 45
S1 to S4
O
Segment drive signal output to the fluorescent indicator tube
46
VDD3
—
Power supply terminal (+3.3V)
47
S5/I-A-MODE
I/O
Segment drive signal output to the fluorescent indicator tube and deck-A mode detection signal
input from the tape mechanism deck block “L” active
input from the tape mechanism deck block “L” active
48
S6/I-A-PHOTO
I/O
Segment drive signal output to the fluorescent indicator tube and deck-A tape reel rotating
detection signal input from the tape mechanism deck block
detection signal input from the tape mechanism deck block
49
S7/I-A-HALF
I/O
Segment drive signal output to the fluorescent indicator tube and deck-A cassette detection signal
input from the tape mechanism deck block “L”: cassette in
input from the tape mechanism deck block “L”: cassette in
50
S8/I-REC (FWD)
I
Recording-proof (forward direction) detection signal input from the tape mechanism deck block
“L”: recording possible
“L”: recording possible
51
FIX0
—
Connected to the ground
52
S9/I-B-PHOTO
I
Deck-B tape reel rotating detection signal input from the tape mechanism deck block
53
S10/I-B-HALF
I
Deck-B cassette detection signal input from the tape mechanism deck block “L”: cassette in
62
CX-JTV8
Pin No.
Pin Name
I/O
Description
54
S11/I-B-MODE
I/O
Segment drive signal output to the fluorescent indicator tube and deck-B mode detection signal
input from the tape mechanism deck block “L” active
input from the tape mechanism deck block “L” active
55
S12/I-REC (REW)
I/O
Segment drive signal output to the fluorescent indicator tube and recording-proof (reverse
direction) detection signal input from the tape mechanism deck block
“L”: recording possible
direction) detection signal input from the tape mechanism deck block
“L”: recording possible
56 to 65
S11 to S22
O
Segment drive signal output to the fluorescent indicator tube
66 to 68
NC
O
Not used
69
O-TECHNO
O
LED drive signal output of the TECHNO indicator “H”: LED on
70
O-HIP-HOP
O
LED drive signal output of the HIP HOP indicator “H”: LED on
71
O-MANUAL
O
LED drive signal output of the MANUAL indicator “H”: LED on
72
VDD4
—
Power supply terminal (+3.3V)
73
O-SYS-POWER
O
Power supply on/off control signal output for the CD/video CD section “H”: power on
74
O-VIDEO-MUTE
O
Video muting on/off control signal output to the video amplifier “H”: muting on
75
O-VIDEO-SW
O
Video on/off control signal output terminal Not used
76
I-HP-MUTE
I
Headphone detection signal input terminal “H”: headphone in
77
I-TRE B
I
Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (B phase input)
78
I-TRE A
I
Jog dial pulse input from the rotary encoder (TREBLE/MIDDLE) (A phase input)
79
I-BASS B
I
Jog dial pulse input from the rotary encoder (BASS) (B phase input)
80
I-BASS A
I
Jog dial pulse input from the rotary encoder (BASS) (A phase input)
81
I-JOG B
I
Jog dial pulse input from the rotary encoder (jog dial) (B phase input)
82
I-JOG A
I
Jog dial pulse input from the rotary encoder (jog dial) (A phase input)
83
I-VOL B
I
Jog dial pulse input from the rotary encoder (VOLUME) (B phase input)
84
I-VOL A
I
Jog dial pulse input from the rotary encoder (VOLUME) (A phase input)
85, 86
NC
I
Not used
87
I-LC72121 DI
I
Serial data input from the tuner unit
88
I-TUNER TUNE
I
Tuning detection signal input from the tuner unit “L”: tuned
89
VSS2
—
Ground terminal
90
VDD2
—
Power supply terminal (+3.3V)
91
O-LC72121/
M61529/BU2099
DO
O
Serial data output to the tuner unit, electrical volume and LED driver/tape mechanism controller
92
O-LC72121/
BU2099/BU9262
AFS CLK
O
Serial data transfer clock signal output tuner unit, LED driver/tape mechanism controller, multi
controller, bass boost controller and digital echo
controller, bass boost controller and digital echo
93
O-POWER LED
O
LED drive signal output of the POWER 1 STANDBY/ON indicator “L”: LED on
94
O-POWER RELAY
O
Power on/off relay drive signal output terminal “H”: power on
95
O-KEYSCAN
O
Key scan signal output for initial diode and switches in the tape mechanism deck
“L”: key scan
“L”: key scan
96
I-CD NUMBER
SENS
I
CD table address detection signal input terminal
97
I-TUNER STEREO
I
FM stereo detection signal input from the tuner unit “L”: stereo
98
O-SYS-OUT
O
Serial data output to the MPEG audio/video decoder
99
I-SYS-IN
I
Serial data input from the MPEG audio/video decoder
100
I-SYS-CLK
I
Serial data transfer clock signal input from the MPEG audio/video decoder
63
CX-JTV8
• Abbreviation
EA
: Saudi Arabia model
MY : Malaysia model
SP
SP
: Singapore model
7-1. CASE SECTION
SECTION 7
EXPLODED VIEWS
• Items marked “*” are not stocked since they
are seldom required for routine service. Some
delay should be anticipated when ordering
these items.
delay should be anticipated when ordering
these items.
• The mechanical parts with no reference num-
ber in the exploded views are not supplied.
• Accessories are given in the last of the elec-
trical parts list.
NOTE:
• -XX and -X mean standardized parts, so they
may have some difference from the original
one.
one.
• Color Indication of Appearance Parts
Example:
KNOB, BALANCE (WHITE) . . . (RED)
KNOB, BALANCE (WHITE) . . . (RED)
↑
↑
Parts Color Cabinet's Color
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
1
4-233-980-01 RUBBER FOOT
2
4-246-682-01 EMBLEM (30), MP3
3
4-245-158-01 EMBLEM
4
4-245-113-01 PANEL, TRAY
5
3-363-099-01 SCREW (CASE 3 TP2)
6
3-363-099-31 SCREW (CASE 3 TP2)
7
4-245-183-51 CASE (SIDE-L)
8
4-244-849-51 CASE (TOP)
9
4-245-184-51 CASE (SIDE-R)
10
A-4747-890-A VMP42DN BOARD, COMPLETE
11
1-823-899-11 WIRE (FLAT TYPE) (28 CORE)
12
3-047-821-01 SHEET (B)
#3
7-685-645-79 SCREW +BVTP 3X6 TYPE2 N-S
The components identified by
mark 0 or dotted line with mark
mark 0 or dotted line with mark
0 are critical for safety.
Replace only with part number
specified.
Replace only with part number
specified.
1
2
3
4
5
6
#3
#1
#1
#1
#1
CDM74F-30BD62
front panel section-1
#1
#1
#1
9
6
10
11
12
12
5
7
8
12
12
Ver 1.2
64
CX-JTV8
7-2. FRONT PANEL SECTION-1
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
51
4-245-125-01 KNOB (VOLUME), ROTARY
52
4-245-126-01 KNOB (JOG), ROTARY
53
4-246-528-02 RING (BASS)
54
4-245-131-01 PANEL, BASS
55
4-245-128-01 KNOB (BASS), ROTARY
56
4-245-127-01 KNOB (TREBLE), ROTARY
57
4-248-761-11 WINDOW, DISPLAY
58
1-827-400-11 WIRE (FLAT TYPE) (3 CORE)
59
4-245-135-01 GUIDE (GEQ L), LED
60
4-245-134-01 GUIDE (POWER), LED
61
4-245-141-01 GUIDE (GEQ R), LED
62
A-4747-919-A PANEL BOARD, COMPLETE (E, SP, MY)
62
A-4747-925-A PANEL BOARD, COMPLETE (EA)
63
1-773-322-11 WIRE (FLAT TYPE) (31 CORE)
64
1-769-976-11 WIRE (FLAT TYPE) (13 CORE)
65
1-769-919-11 WIRE (FLAT TYPE) (9 CORE)
66
4-245-119-01 KNOB (MICROPHONE), ROTARY
67
4-245-144-01 GUIDE (BASS), LED
68
1-827-399-11 WIRE (FLAT TYPE) (3 CORE)
#1
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
51
52
53
54
55
66
56
57
60
58
59
61
68
62
67
63
64
65
front panel section-2
#1
#1
Ver 1.2
Click on the first or last page to see other CX-JTV8 / JAX-TV8 service manuals if exist.