DOWNLOAD Sony HCD-H100 / MHC-C10 / MHC-G100 (serv.man2) Service Manual ↓ Size: 16.22 MB | Pages: 48 in PDF or view online for FREE

Model
HCD-H100 MHC-C10 MHC-G100 (serv.man2)
Pages
48
Size
16.22 MB
Type
PDF
Document
Service Manual
Brand
Device
Audio
File
hcd-h100-mhc-c10-mhc-g100-sm2.pdf
Date
PREV: Sony HCD-H100 / MHC-C10 / MHC-G100 Service Manual

Sony HCD-H100 / MHC-C10 / MHC-G100 (serv.man2) Service Manual ▷ View online

— 9 —
2. Turn the adjustment screw and check output peaks. If the peaks
do not match for L-CH and R-CH, turn the adjustment screw so
that outputs match within 2 dB of peak.
3. Mode: Playback
good
R
L-CH
peak
R-CH
peak
output
level
screw
position
within 2dB
L-CH
peak
R-CH
peak
screw
position
test tape
P-4-A100
(10kHz, –10dB)
SPEAKER
terminal (JK301)
(L-CH)
set
L
oscilloscope
SPEAKER
terminal (JK301)
(R-CH)
Waveform of oscilloscope
wrong
in phase
45˚
90˚
135˚
180˚
4. After the adjustments, apply suitable locking compound to the
parts adjusted.
Adjustment Location:
Adjustment screws
REC/PB head (deck A)
or PB head (deck B)
Tape Speed Adjustment (Deck A)
Procedure:
Mode: Playback
test tape
WS-48B
(3kHz, 0dB)
set
SPEAKER
terminal (JK301)
frequency counter
Test tape
Signal
Used for
Tape
WS-48B
3 kHz, 0 dB
Tape Speed Adjustment
Adjust the SFR201 so that the frequency counter reads 3,000 Hz 
±
90 Hz.
Adjustment Location:
Sample Value of Wow and flutter
       W.RMS (JIS) less than 03.%
       (test tape: WS-48B)
[MAIN BOARD] — Component side —
+
–
within
2dB
CN205
SFR201
CN301
Tape Speed Adjustment
— 10 —
FM Tuned Level Adjustment
Tuner board
G
VT
TP2
Procedure :
1. Set the reception frequency of the unit to 87.5 MHz.
2. Adjust L103 for 1.2 
±
 0.05V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 108 MHz.
4. Confirm that the voltage reading on the DC voltmeter is within
7.8 
±
 0.5V.
FM Tracking  Adjustment
(EXCEPT AEP, UK, German model)
TUNER SECTION
0 dB=1
µ
V
Note: As a FM front end (U1) is difficult to repair if faulty, replace it
with new one. (AEP, UK, German model)
FM Section Adjustment
FM Tuning Voltage  Adjustment
(EXCEPT AEP, UK, German model)
FM RF SSG
oscilloscope
FM ANTENNA terminal (JK101)
SPEAKER terminal (JK301)
set
Carrier frequency : 90 MHz, 106 MHz
Modulation
: AUDIO 1kHz, 75kHz deviation (100%)
Output level
: 20 dB (at 75
Ω
 open)
Procedure:
1. Tune the set to 90 MHz.
2. Adjust L102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
3. Tune the set to 106 MHz.
4. Adjust TC101 so that when the waveform on the oscilloscope is
maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
+
–
+
–
Carrier frequency : 98 MHz
Modulation
: AUDIO 1 kHz, 75 kHz
deviation (100%)
Output level
: 28 dB
FM RF SSG
set
75 
Ω
 coaxial
FM ANTENNA terminal
(JK101)
Procedure:
1. Supply a 28 dB 98 MHz signal from the ANTENNA terminal.
2. Tune the set to 98 MHz.
3. Adjust SFR101 to the point (moment) when the TUNED indica-
tor will change from going off to going on.
AM Section Adjustment
AM Tuning Voltage  Adjustment
DC voltmeter
DC voltmeter
Tuner board
G
VT
TP2
Procedure:
1. Set the reception frequency of the unit to 530 kHz (10 kHz step)
or 531 kHz (9 kHz step).
2. Adjust L105 for 1.2 
±
 0.05 V reading on the DC voltmeter.
3. Set the reception frequency of the unit to 1,710 kHz (10 kHz step)
or 1,602 kHz (9 kHz step).
4. Confirm that the voltage reading on the DC voltmeter is within
8.0 
±
 0.5 V.
+
–
— 11 —
AM Tracking  Adjustment
loop antenna
Field strength dB (
µ
V/m) = SSG output level dB (
µ
V/m) –26dB.
loop antenna
(Supplied accessories)
AM RF SSG
30% amplitude
modulation by
400Hz signal
60cm
set
AM antenna
terminal (JK101)
Procedure:
1. Tune the set to 600 kHz (10 kHz step) or 603 Hz (9 kHz step).
2. Set the output of AM RF SSG so that the input level of the set will
become 60 dB (
µ
V/m).
3. Adjust L104 so that when the waveform on the oscilloscope is
maximum, no noise appears.
4. Tune the set to 1,400 kHz (10 kHz step) or 1,404 Hz (9 kHz step).
5. Adjust TC102 so that when the waveform on the oscilloscope is
maximum, no noise appears.
• Repeat the procedures in each adjustment several times, and the
tracking adjustment should be finally done by the trimmer
capacitors.
Adjustment Location
E, SP, MX, AUS MODEL
[TUNER BOARD] — Component side —
FM Tuning Voltage
TP2
L103
TC101
L102
IC101
JK101
L104
TC102
AM Tracking
AM Tuning Voltage
IC102
SFR101
FM Tuned Level
L105
FM Tracking
AEP, UK, G MODEL
[TUNER BOARD] — Component side —
U1
TP2
SFR101
FM Tuned Level
IC102
L105
TC102
JK101
L104
AM Tracking
AM Tuning Voltage
• Abbreviation
G
: German model.
MX : Mexican model.
SP
: Singapore model.
AUS : Australian model.
— 12 —
CD SECTION
Focus Bias Adjustment
CD Decoder
(1/2) board
CN12
FEO
VC
DC voltmeter
Procedure:
1. Connect DC voltmeter to test point CN12 (FEO), (VC).
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Adjust VR01 so that the DC voitmeter reading is 0 
±
 0.1 V.
–
+
RF Level Check
Procedure :
1. Connect oscilloscope to test point TP (RF) on CD Decoder (1/2)
board.
2. Turned Power switch on.
3. Put disc (YEDS-18) in and playback.
4. Confirm that oscilloscope waveform is clear and check RF signal
level is correct or not.
Note: Clear RF signal waveform means that the shape “
◊
” can be
clearly distinguished at the center of the waveform.
TP (RF)
CN12 (VC)
CD Decoder
(1/2) board
oscilloscope
level: 1.0         Vp-p
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
+0.3
–0.2
Adjustment Location
[CD DECODER (1/2) BOARD] — Component side —
CN21, VR01
Focus Bias Adjustment
CN12
IC03
CN12, TP (RF)
RF Level Check
IC01
R07
TP
(RF)
VR01
2
1
Page of 48
Display

Click on the first or last page to see other HCD-H100 / MHC-C10 / MHC-G100 (serv.man2) service manuals if exist.

RANDOM: