Sony XR-C5500T Service Manual ▷ View online
9
Adjustment Location:
Tape Speed Adjustment
– SET UPPER VIEW –
SECTION 4
MECHANICAL ADJUSTMENTS
• Tape Tension Measurement
1. Clean the following parts with a denatured-alcohol-moistened
swab:
playback head
pinch roller
rubber belt
capstan
idler
2. Demagnetize the playback head with a head demagnetizer.
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
3. Do not use a magnetized screwdriver for the adjustments.
4. The adjustments should be performed with the power supply
voltage (14.4 V) unless otherwise noted.
• Torque Measurement
Mode
Torque Meter
Meter Reading
2.95 – 6.37 mN•m
Forward
CQ-102C
(30 – 65 g•cm)
(0.42 – 0.90 oz•inch)
Forward
0.05 – 0.44 mN•m
CQ-102C
(0.5 – 4.5g•cm)
Back Tension
(0.01 – 0.06 oz•inch)
2.95 – 6.37 mN•m
Reverse
CQ-102RC
(30 – 65 g•cm)
(0.42 – 0.90 oz•inch)
Reverse
CQ-102RC
0.05 – 0.44 mN•m
(0.5 – 4.5g•cm)
Back Tension
(0.01 – 0.06 oz•inch)
5.89 – 19.61 mN•m
FF, REW
CQ-201B
(60 – 200 g•cm)
(0.83 – 2.78 oz•inch)
Mode
Tension Meter
Meter Reading
more than 8.83 mN•m
Forward
CQ-403A
(more than 90 g)
(more than 3.18 oz)
more than 8.83 mN•m
Reverse
CQ-403R
(more than 90 g)
(more than 3.18 oz)
SECTION 5
ELECTRICAL ADJUSTMENTS
0 dB=0.775 V
TAPE DECK SECTION
TUNER SECTION
Tuner section adjustments are done automatically in this set.
Tape Speed Adjustment
Setting:
Procedure:
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the
1. Put the set into the FWD PB mode.
2. Adjust adjustment resistor for inside capstan motor so that the
reading on the frequency counter becomes in 3,015 Hz.
Specified Value: 2,955 to 3,075 Hz
frequency counter
test tape
WS-48A
(3 kHz, 0 dB)
WS-48A
(3 kHz, 0 dB)
set
AUDIO OUT REAR jack (J331)
–
+
10 k
Ω
11
11
XR-C5500T
05
TAPE EQUALIZER AMP, AMS
IC301
37
39
R-CH
PBF
IN2
IN2
FWD
L-CH
HP901
(PLAYBACK)
FWD
R-CH
REV
L-CH
REV
R-CH
PBR
IN2
IN2
R-CH
R-CH
R-CH
R-CH
R-CH
R-CH
EQ AMP
2
4
MUTE
DOLBY
NR AMP
PB
OUT2
TAPE
IN2
IN2
AMS
DET
+
NROUT
MTLON
19
DRSW
18
TAPESW
17
16
20
INSW
TAPATT
DOLBY
AMSON
AMSIN
MSSW
7
LINE
OUT2
14
MS
OUT
SE1L
AM
SDA
SCL
EXT-ATT
1
11
SE2L
4
AM-IF
12
MPX
13
LOUDNESS
VOLUME
IIC BUS
DIGITAL
CONTROL
R-CH
INPUT SELECT,
ELECTRICAL VOLUME
IC331
J331 (1/2)
BUS
AUDIO IN
SOFT
MUTE
TONE
CONTROL
LOUDNESS
29
18
MPIN
20 21
OUTLR
R-CH
30
OUTLF
L
R
DATA
CLOCK
MASTER CONTROLLER
IC501 (1/2)
46
47
I2C CKO
45
I2C SIO
35
BEEP
J331(2/2)
AUDIO OUT
(LINE OUT) REAR
R-CH
L
R
49
50
ATT
MUTING
CONTROL SWITCH
Q621
MUTING
CONTROL SWITCH
Q622
AMPON
BATT B+
D622
D625
D621
FRONT L (+)
1
12
14
5
3
FL+
FL–
21
23
FR+
FR–
FL-IN
FR-IN
11
9
7
RL+
RL–
RL-IN
15
22
17
19
RR+
RR–
RR-IN
4
CN781 (1/2)
(POWER CONNECTOR)
POWER AMP
IC751
FRONT L (–)
9
FRONT R (+)
4
FRONT R (–)
12
REAR L (+)
2
REAR L (–)
10
REAR R (+)
3
REAR R (–)
11
MUTING
Q171
MUTING
Q271
MUTING
Q181
STNBY
MUTE
16
AUX
MUTING
Q281
R-CH
R-CH
CAPSTAN/REEL
MOTOR DRIVE
Q354
CMON
BATT B+
Q353
M
M901
(CAPSTAN/REEL)
REGULATOR
CONTROL SWITCH
Q352
LMEJ
TAPON
LMLOD
VCC
REEL SENSOR B+
BATT B+
IN1
IN2
OUT1
OUT2
LOADING/TAPE OPERATION
MOTOR DRIVER
IC351
M
9
7
MOTOR
DRIVE
3
4
1
REGULATOR
Q351
LOADING/TAPE
OPERATION
TAPE OPERATION
SWITCH
BUFFER
TAKE-UP
REEL
SENSOR
SUPPLY
REEL
SENSOR
REEL SENSOR BOARD
REL
85 – 88
POS0 – POS3
TAPE
DETECT
EJECT/FF/REW/
REV/FWD MODE DETECT
• SIGNAL PATH
: MW/SW
: FM
: TAPE PLAY
: BUS AUDIO IN
BATT B+
INPUT
MULTIPLEXER
OUTPUT
SELECTOR
MONO
FADER
MIXER
PILOT
CANCELATION
AM/FM NOISE
BLANKER
D/A
CONVERTER
DEMODULATOR
STEREO ADJUST
STEREO BLEND
HIGH-
CUT
L.P.F
48
VOLATT
MUTE
PILOT DET
L.P.F.
S & H
PLL
S-METER
15
14
19
10
8
AM-DET
MPX
AM-IF
13
12
14
S-METER
SDA
SCL
7
4
18
17
SW SHIFT
FM-AGC
SCL-EEP
SDA-EEP
10
5
11
VDD
VCC
EEP VDD
1
2
AM-ANT
FM-ANT
FM/MW/SW TUNER UNIT
TU1
BU B+
TUNER +8V
TUNER +5V
DATA
CLOCK
2
VSM
74 75
3
77
SWSHIFT
FMAGC
E2P CKO
E2P SIO
CKO
SIO
FMAGC
SWSHIFT
SWSHIFT
FMAGC
CKO
SIO
57
52
55
54
53
90 89
91
92
84
FM/MW/SW
ANTENNA
J1
AMPATT
•
R-ch is omitted due to same as L-ch.
SECTION 6
DIAGRAMS
6-1.
BLOCK DIAGRAM – TUNER/TAPE/MAIN Section –
12
12
XR-C5500T
MASTER CONTROLLER
IC501 (2/2)
82
REIN1
KEYACK
26
KEYIN1
REIN0
81
80
KEYIN0
RCIN0
RCIN1
5
4
7
24
KEY ACTIVE
SWITCH
Q551
D501
D553
AD ON
LSW801, 901 – 907,
LSW909, 912 – 917,
LSW909, 912 – 917,
S901 – 904
ROTARY
ENCODER
RE901
RE901
(VOLUME CONTROL)
J561
REMOTE IN
DOORSW
78
NOSESW
CN901
(FRONT PANEL SIDE)
CN701
(MAIN BODY SIDE)
1
9
OSCOUT
OSCIN
XOUT
XIN
12
13
16
17
X501
18.432MHz
X502
32.768kHz
DI
64
CL
63
60
CE
OSC
62
LCDSO 21
LCDCKO 23
22
LCDCE
OSC
C953, R957
LED DRIVE
Q631
LIQUID CRYSTAL DISPLAY DRIVER
IC901
4
–
51
S04
–
S51
52
–
55
COM1
–
COM4
LIQUID CRYSTAL
DISPLAY
LCD901
05
BU B+
RESET SIGNAL
GENERATOR
IC551
6
8
4
CLK OUT
CLK IN
DATA OUT
DATA
IN/OUT
2
RST
RESET
SWITCH
BUS ON
SWITCH
13
11
1
BUS ON
OUT
BUS
ON IN
ON IN
12
9
DATA IN
SONY BUS INTERFACE
IC581
BATT
BATT B+
BUS ON
DATA
CLK
RESET
7
6
5
4
2
3
BATT
CLK
DATA-OUT
DATA-IN
RST
BUS ON
BUIN
CLK
DATA-OUT
DATA-IN
RST
BUS ON
BUIN
BATTERY
SWITCH
10
BATT
CHECK
CHECK
28
19
44
UNICKO
43
UNISI
41
UNICLI
42
UNISO
20
33
TH501
D582
D581
RESET
SYSRST
BUIN
BUSON
S551
(RESET)
S552
(NOSE DETECT)
SIRCS
3
(FOR SONY BUS)
CN581
BUS CONTROL IN
ACCESSORY CHECK
Q571
TU+B (8V)
ANT+B
AMP+B
REGULATOR
IC611
COM8V
TU+B (5V)
TUNER8.7
TUNER5.6
STB
16
BATT
ANT REM
6
CN781 (2/2)
(POWER CONNECTOR)
COM +8V
(AUDIO CIRCUIT B+)
D572
TUNER +5V
FM/MW/SW TUNER UNIT
(TU1) B+
TUNER +8V
VCC
7
6
8
7
ACC
REGULATOR
CONTROL SWITCH
Q602
ILL B+
LED901 – 904,
LSW901 – 907, 909, 912 – 917
(ILLUMINATION)
LED910 – 913
(LCD BACK LIGHT)
2
3
4
9
BU+B
BU B+
D551
5
10
11
TUNON
PW ON
83
ILLON
34
DOORIND 79
SIRCS 29
BATT B+
POWER AMP
(IC751) B+
AMP REM
5
D610
D611
38
ACCIN
D1, 5
18
LED801
(TAPE WINDOW),
LSW801
Z
BATT B+
BATTERY DETECT
Q581
SIRCS BUFFER
Q582
REMOTE CONTROL
RECEIVER
IC951
D587
36
REGULATOR
Q601
RST
BU B+
6-2.
BLOCK DIAGRAM – DISPLAY/KEY CONTROL/BUS CONTROL/POWER SUPPLY Section –
13
13
2.2 Vp-p
30.5
µ
s
1.1 Vp-p
54.2 ns
• Waveforms
– MAIN Board –
– MAIN Board –
1
IC501
qd
(OSCIN)
2
IC501
qg
(XIN)
– KEY Board –
1
IC901
y;
(OSC)
2.7 Vp-p
27
µ
s
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
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.
•
C
: panel designation.
•
U
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
no mark : FM
(
) : AM (MW/SW)
<
> : TAPE PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
• Signal path.
F
: FM
f
: AM (MW/SW)
E
: TAPE PLAY
L
: BUS AUDIO IN
Note on Printed Wiring Board:
•
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
b
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Pattern face side:
Parts on the pattern face side seen from
(Conductor Side)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Component Side)
the parts face are indicated.
6-3.
NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
Click on the first or last page to see other XR-C5500T service manuals if exist.