Sony TC-TX101 Service Manual ▷ View online
– 26 –
Note:
• All capacitors are in
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
: nonflammable resistor.
•
: fusible resistor.
•
: panel designation.
•
B+
: B+ Line.
•
B–
: B- Line.
•
: adjustment for repair.
• Voltage is dc with respect to ground under no-signal
conditions.
no mark : PB (FWD)
(
(
) : REC (FWD)
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Signal path.
: PB
: REC
: REC
TC-TX101
• IC Block Diagrams
IC01, 09
µ
PC4570H
IC1A LB1641
IC02 CXA1101P
1 2
4
5
6
7
8
3
VF
VF
DET
DET
REC IN
VCC
PB IN
ON/OFF
LINE OUT
REC OUT
REC IN
PB IN
REC/PB
LINE OUT
REC OUT
16 15
13 12
11
10
9
14
1
2
3
4
5
6
7
8
9
10
GND
MOTOR
DRIVE
NOISE
FILTER
CLAMP
FWD.IN
REV.IN
VCC 1
VCC 2
NOISE
FILTER
MOTOR
DRIVE
MOTOR
DRIVE
MOTOR
DRIVE
T.S.D
O.C.P
FWD/REV/STOP
CONTROL LOGIC
1
2 3
4
5 6 7
8
9
OUT1
–IN1
+IN1
VEE
+IN2
–IN2
OUT2
VCC
VCC
IC03 NJM4558L
+ –
6
7
5
8
B
+
–
2
1
3
4
A
A OUT
A IN–
A IN+
VEE
VCC
B OUT
B IN–
B IN+
Note: The components identified by mark
!
or dotted line
with mark
!
are critical for safety.
Replace only with part number specified.
– 31 –
7-7. IC PIN DESCRIPTION
• IC04
• IC04
µ
PD75108GF-N14-3BE (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
RVS REC RELAY
O
RVS REC relay control output (Not used in this set.)
2
FWD REC RELAY
O
FWD REC relay control output (Not used in this set.)
3
RVS PLAY RELAY
O
RVS PLAY relay control output (Not used in this set.)
4
FWD PLAY RELAY
O
FWD PLAY relay control output (Not used in this set.)
5
POWER OUT
O
Power output (Not used in this set.)
6
AMS OUT
O
AMS gain control output (Not used in this set.)
7
RESET
I
Reset input (L : Reset)
8
XTAL
—
Oscillator circuit (4.19 MHz)
9
XTAL
—
Oscillator circuit (4.19 MHz)
10
NR OUT
O
Noise reduction signal output (Not used in this set.)
11
REC/PB
O
REC/PB select output (H : REC, L : PB)
12
F/R
O
RVS/FWD select output (H : RVS, L : FWD) (Not used in this set.)
13
BIAS
O
Bias oscillation control output (H : ON, L : OFF)
14
LINE MUTE
O
Line mute control output (H : OFF, L : ON)
15
PB.MUTE
O
PB mute control output (H : OFF, L : ON)
16
REC.MUTE
O
REC mute control output (H : OFF, L : ON)
17
TAPE 4
O
REC equalizer select output (H : METAL) (Not used in this set.)
18
TAPE 2
O
REC equalizer select output (H : CrO
2
)
19
TAPE 1
O
REC equalizer select output (H : NORMAL)
20
M.FWD
O
Reel motor forward direction rotation output
21
M.REV
O
Reel motor reverse direction rotation output
22
H.SPEED
O
Tape speed control output
23
L+
O
Loading motor forward direction rotation output
24
L–
O
Loading motor reverse direction rotation output
25
AU BUS OUT
O
AU BUS signal output
26
VSS
—
Ground
27
F.REC
I
Mechanism deck FWD REC PROOF claw detection signal input (H : REC inhibit)
28
R.REC
I
Mechanism deck RVS REC PROOF claw detection signal input (H : REC inhibit)
29
PACK IN
I
Loading detection signal input
30
AU BUS IN
I
AU BUS signal input
31
AMS IN
I
AMS signal input
32
KEY 1
I
Key switch input 1
33
KEY 0
I
Key switch input 0
34
S.PLAY MODE
I
Mechanism deck tape position detection signal input
35
F.REEL
I
Mechanism deck FWD reel sensor detection signal input
36
R.REEL
I
Mechanism deck RVS reel sensor detection signal input
37
MODE SEL
I
Mode select input (Fixed at “H” in this set.)
38
CrO2
I
Mechanism deck CrO
2
switch input
39
TAPE IN
I
Mechanism deck HALF switch input
40
TEST PIN
I
Input for test mode. (L : Test mode)
41, 42
NC
I
Connect to Ground in this set.
43
NC
O
Not used in this set.
44
POWER DOWN IN
I
Power detection input
45
NR.LED
O
NR LED output (Not used in this set.)
46
PB.LED
O
PLAYBACK LED output (Not used in this set.)
47
TAPE.LED
O
Tape indicator LED output
48
CD SYC.LED
O
CD SYNC LED output
49
REC.LED
O
REC LED output
50
>>.LED
O
) LED output
51
<<.LED
O
0 LED output
52
PAUSE.LED
O
PAUSE LED output
– 32 –
Pin No.
Pin Name
I/O
Pin Description
53
>.LED
O
” LED output
54
<.LED
O
“ LED output
55
POWER(GRN)LED
O
POWER LED output (Not used in this set.)
56
POWER(RED)LED
O
POWER LED output (Not used in this set.)
57
NC
—
Fixed at “H” in this set.
58
VDD
—
Power supply pin
59 – 61
NC
—
Not used in this set.
62
REC/PB
O
REC/PB select output (H : REC, L : PB)
63, 64
NC
—
Not used in this set.
– 33 –
Ref. No.
Part No.
Description
Remark
Ref. No.
Part No.
Description
Remark
SECTION 8
EXPLODED VIEWS
N
N
NOTE:
• The mechanical parts with no reference
number in the exploded views are not supplied.
• Items marked “*” are not stocked since
they are seldom required for routine service.
Some delay should be anticipated
when ordering these items.
Some delay should be anticipated
when ordering these items.
• -XX and -X mean standardized parts, so
they may have some difference from the
original one.
original one.
• Color Indication of Appearance Parts
Example :
KNOB, BALANCE (WHITE) ... (RED)
Parts Color Cabinet’s Color
• Accessories and packing materials are
given in the last of this parts list.
8-1. CHASSIS SECTION
• Abbreviation
G
: German model
SP : Singapore model
MY : Malaysia model
HK : Hong Kong model
JE
MY : Malaysia model
HK : Hong Kong model
JE
: Tourist model
1
2
2
20
24
4
3
6
19
5
7
20
22
22
22
8
9
10
11
20
20
20
12
14
13
15
19
19
16
17
21
23
23
18
not supplied
* 1
3-021-633-01 TOP COVER
2
3-363-099-51 SCREW (CASE 3 TP2)
3
3-021-619-01 FRONT PANEL
4
4-942-636-21 EMBLEM (No.3.5), SONY
5
3-021-632-01 FRONT WINDOW
6
3-021-623-01 SUB PANEL
7
3-021-634-01 FOOT (FRONT)
8
3-021-622-01 EJECT BUTTON
* 9
3-021-627-01 LED PLATE
* 10
3-021-626-01 LED HOLDER
11
3-021-624-01 SLIDE KNOB
* 12
A-2007-755-A FRONT BOARD, COMPLETE
13
3-021-620-01 DOOR CASSETTE
14
3-020-419-01 DOOR SPRING
15
3-021-621-01 PLAY BUTTON
16
3-020-399-01 FOOT (REAR)
* 17
3-021-639-01 CUSHION
* 18
3-021-643-01 BACK PLATE (AEP,UK,G)
* 18
3-022-375-01 BACK PLATE (SP,MY,HK,JE)
19
7-685-647-79 SCREW +BVTP 3X10 TYPE2 N-S
20
7-685-646-79 SCREW +BVTP 3X8 TYPE2 N-S
21
1-782-804-11 CORD (WITH CONNECTOR)
22
7-685-648-79 SCREW +BVTP 3X12 TYPE2 N-S
23
7-685-645-79 SCREW +BVTP 3X6 TYPE2 N-S
24
3-021-640-01 BRACKET (FLEXIBLE A)
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