Sony MEX-1GP Service Manual ▷ View online
21
21
MEX-1GP
MEX-1GP
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
• All capacitors are in µF unless otherwise noted. (p: pF)
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.
•
f
: internal component.
• C : panel designation.
For printed wiring boards.
Note:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
• A : B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
• B : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• CD mechanism section (1/2), (2/2)
no mark : CD PLAY
• Main (1/3), (2/3), (3/3) and Key sections
no mark : FM/MW/LW
no mark : CD PLAY
• Main (1/3), (2/3), (3/3) and Key sections
no mark : FM/MW/LW
<
> : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: CD PLAY
F
: FM
f
: MW/LW
L
: BUS AUDIO
c
: MEMORY PLAY
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side:
Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
• Waveforms
— SERVO Board —
(CD PLAY)
— MAIN Board —
3-5. CIRCUIT BOARDS LOCATION
1
IC2 5 (FEI)
Approx.
1Vp-p
1Vp-p
0 V
0.6 Vp-p
16.9344 MHz
Approx. 100 mVp-p
50 mV/DIV, 5 msec/DIV
0.5 V/DIV, 0.5
µ
sec/DIV
2
IC2 6 (TEI)
200 mV/DIV, 5 msec/DIV
6
IC2 oh (FPI2), oj (FPI1)
0.5 V/DIV, 0.5
µ
sec/DIV
Approx. 400 mVp-p
3
IC2 wd (XI)
0.2 V/DIV, 0.2
µ
sec/DIV
7
IC3 ia (X1)
0.5 V/DIV, 0.2
µ
sec/DIV
1.1 Vp-p
12 MHz
4
IC2 ia (RFI)
0.5 V/DIV, 0.5
µ
sec/DIV
5
IC2 of (FNI2), og (FNI1)
1.5 Vp-p
1.5 Vp-p
0 V
1
IC911 tg (OSC_16M_OUT)
3.3 Vp-p
1 V/div, 20 nsec/div
16.9344 MHz
— KEY Board —
• Abbreviation
CND : Canadian model.
Note:
The components
identified by mark 0 or
dotted line with mark 0
are critical for safety.
Replace only with part
number specified.
The components
identified by mark 0 or
dotted line with mark 0
are critical for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce por tant le numéro
spécifié.
MAIN board
SUB board
SENSOR board
SERVO board
SPEAKER board
KEY board
tuner unit
(TU601)
(TU601)
2.5 Vp-p
8.664 MHz
1
IC600 0 (XTO)
1 V/DIV, 50 nsec/DIV
1.0 Vp-p
32.768 kHz
2
IC801 ul (X1A)
0.5 V/DIV, 10
µ
sec/DIV
3.2 Vp-p
18.432 MHz
3
IC801 id (X1)
1 V/DIV, 20 nsec/DIV
IC907 in the key board is not supplied.
The IC907 cannot be replaced. The complete key board
should be replaced.
The IC907 cannot be replaced. The complete key board
should be replaced.
22
22
MEX-1GP
MEX-1GP
1
A
B
C
D
E
F
G
H
2
3
4
5
6
7
8
9
10
11
12
13
14
CN751
SW3
SW2
1-689-230-
FMA4
FMA6
FMA3
FMA5
TP67
TP68
TP70
TP69
TP47
TP48
TP45
TP46
IC6
R43
R35
C16
C70
C14
C29
C30
C68
C133
R10
C132
R16
R14
R15
C17
C72
R20
R5
R26
R147
Q3
R8
R133
R132
Q21
SW1
C66
C67
C48
C10
R27
R17
R81
C46
R33
R44
R23
R22
R58
R9
R62
R61
IC3
R2
R60
C7
R87
R86
R85
R144
R82
R141
R79
R25
R78
R77
R97
R98
R34
FB3
R55
FB2
C56
R24
Q2
IC1
C13
C80
C69
FB4
C18
R12
C71
C55
C54
R7
C31
C24
C15
R30
TP4
TP3
TP5
TP64
FMB3
FMB4
TP11
TP10
TP1
TP6
TP7
TP8
TP9
TP75
TP76
TP77
TP78
TP79
TP80
TP81
TP82
TP83
TP85
TP90
TP89
TP88
TP91
TP92
TP95
TP97
TP99
TP2
FMB5
IC2
TP86
TP87
TP84
TP98
TP14
TP15
TP65
TP61
TP62
TP51
TP71
TP72
TP74
TP63
TP28
TP22
TP21
TP96
TP42
TP43
TP44
TP29
TP34
TP35
TP30
TP12
TP24
TP25
TP31
TP13
TP38
TP41
TP49
TP50
TP53
TP32
TP33
TP36
TP37
TP39
TP52
BP60
TP23
TP26
TP27
BP10
R37
R36
R31
R32
R65
C40
C50
C23
R64
C60
R39
R63
X2
R54
C47
R53
R38
C43
R42
R52
C36
R28
CN2
R96
R41
C20
R84
R40
R83
R80
R75
R74
R69
R70
R73
R72
R71
R67
R68
C22
R57
C26
R21
C39
C62
C58
R13
CN1
R11
C11
C12
C53
C52
C49
C45
C44
C42
C41
C33
C32
C25
C19
R1
R18
R19
R29
C51
X1
16
1-866-806-
1-866-806-
R6
3-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
• Refer to page 21 for Circuit Boards Location.
: Uses unleaded solder.
(Page 25)
IC1
G-2
IC2
B-11
IC3
D-2
IC6
D-1
Q2
C-1
Q3
C-2
Q21
B-4
• Semiconductor
Location
Ref. No.
Location
23
23
MEX-1GP
MEX-1GP
3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (1/2) —
• Refer to page 21 for Waveforms.
R14
R15
IC6
R132
R133
C10
TP21
TP22
TP28
TP29
TP30
TP42
TP45
TP46
C39
R41
R40
R39
R38
R27
R25
R26
R24
R23
R22
TP33
TP32
TP3
7
TP3
6
R58
TP39
TP38
TP
47
TP48
TP41
T
P3
5
TP34
R42
TP50
TP49
TP23
TP24
TP25
TP26
TP27
TP52
TP31
R7
R10
R17
R18
C14
TP51
R57
R55
TP53
IC2
C12
C13
C17
C56
C54
C24
C55
C51
C50
C53
C47
C49
C46
C22
C
20
R
28
FB2
FB3
C31
C30
R36
R30
C42
C41
C72
C60
C43
C58
R29 R19
C132
C80
C133
C26
C
25
C
32
C
33
R33
R31
R32
R34
C36
TP43
TP44
C29
C23
C40
R37
Q2
Q3
C15
R43
C44
R44
C45
R53
R52
R54
C18
C48
C52
C19
R13
R12
C16
R16
R11
C11
FB4
CN1
X2
Q21
R35
R20
(Page 24)
24
24
MEX-1GP
MEX-1GP
3-8. SCHEMATIC DIAGRAM — CD MECHANISM SECTION (2/2) —
• Refer to page 21 for Waveform.
• Refer to page 33 for IC Block Diagram.
• Refer to page 36 for IC Pin Descriptions.
• Refer to page 33 for IC Block Diagram.
• Refer to page 36 for IC Pin Descriptions.
IC B/D
CN751
3 3
177
R73
R72
R71
R83
TP67
TP68
TP69
TP63
TP64
TP65
R85
R77
R68
R67
R69
R60
R61
R62
R79
R80
R81
R82
R84
R70
R9
TP15
TP14
TP1
TP2
TP3
TP4
TP5
TP6
TP7
TP8
TP9
TP10
TP11
TP71
TP61
TP62
R63
R64
R65
R21
TP12
TP13
R141
R147
TP75
TP76
TP77
TP78
TP79
TP80
TP81
TP82
TP83
TP84
TP85
TP86
TP87
TP88
TP89
TP90
TP91
TP92
TP97
TP98
TP99
BP60
BP10
C69
C70
C68
C66
C62
C71
SW3
SW2
SW4
SW1
M901
M902
M903
C7
IC1
R96
R74
R87
TP70
R75
R97
R98
R8
R5
R6
R2
R1
C67
CN2
R78
X1
R86
R144
IC3
TP72
TP74
(Page 28)
(Page 23)
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