Sony MHC-RG88 (serv.man2) Service Manual ▷ View online
MHC-RG88
25
25
7-3. DIAGRAMA EM BLOCO – SEÇÃ O PRINCIPAL –
–
GEQ DATA
GEQ CLK
81 82
M891
(FAN)
+
–
+
–
–
+
–
+
–
+
–
+
FRONT SPEAKER
IMPEDANCE
USE 6–16Ω
L
R
SURROUND
SPEAKER
IMPEDANCE
USE 24Ω
L
R
PHONES
J631
RY501
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (3/4)
R-ch is omitted due to same as L-ch.
CD L-CH
A
(Pag. 23)
TAPE L-CH
C
(Pag. 24)
TUNER L-CH
B
(Pag. 24)
T501
D507
D511
FAN MOTOR
DRIVE
Q891, 892
FAN MOTOR
ON SWITCH
Q831
OVER LOAD
DETECT SWITCH
Q510
PROTECT SWITCH
Q502
OVER LOAD
DETECT SWITCH
Q509
OVER LOAD
DETECT
Q501, 551
DC DETECT
SWITCH
Q507, 508
M
HEADPHONE MUTING
Q812, 862
MUTING CONTROL
SWITCH
Q861
RY502
+
+
+
TH701
+
D502
MUTING
Q103
MUTING CONTROL
SWITCH
Q504, 505
STANDBY
SWITCH
Q503, 504, 581
R-CH
D841
R-CH
R-CH
18
15
17
16
OUT1
VOLIN1
14
22
21
TOUT1
VOLUME
CONTROL
SOUND
CONTROL
CIRCUIT
INPUT
SELECT
SWITCH
+
R-CH
8
+
R-CH
R-CH
R-CH
INPUT SELECT SWITCH,
TONE CONTROL,
ELECTRICAL VOLUME
IC102
IND1
INB1
INB1
INA1
INC1
6
4
4
3
2
INEX1
SWOUT
BB B1
BB A1
RECB1
DATA
CLOCK
7
5
24
SAOUT
MIC
19
+
CPU
INTERFACE
R-CH
J750
L
R
MD/VIDEO
(AUDIO) IN
R-CH
J601
J401
L
R
GAME
INPUT
REC L-CH
D
(Pag. 24)
SPEANA
(Pag. 26)
MIC
AUDIO
VIDEO OUT
VIDEO
J721
MIC AMP
IC722 (1/2)
FEED BACK
SWITCH
Q101
SIGNAL PATH
: TUNER (FM/AM)
: CD PLAY
: TAPE PLAY
: MD/VIDEO (AUDIO) IN
: GAME INPUT (AUDIO)
: GAME INPUT (VIDEO)
: GAME INPUT (AUDIO)
: GAME INPUT (VIDEO)
: REC
: MIC INPUT
SURROUND
SPEAKER PROTECT
RELAY DRIVE
Q513
FRONT SPEAKER
PROTECT
RELAY DRIVE
Q512
–2
–1
POWER AMP
IC501
RV722
MIC LEVEL
MIC
CONTROL
Q721
A +10V
MIC AMP
IC722 (2/2)
E
+
SUB WOOFER
OUT
IMPEDANCE
USE 8Ω
TM801
RY801
SUB WOOFER
PROTECT
RELAY DRIVE
Q824
–1
–2
OVER LOAD
DETECT SWITCH
Q511
OVER LOAD
DETECT SWITCH
Q825
87
FRONT-RELAY
97
SW RELAY
80
LINE-MUTE
86
LINK-RELAY
78
HP MUTE
79
HP-DETECT
88
PROTECTOR
83
STK-MUTE
TEMPERATURE
DETECT SWITCH
Q505, 506
BUFFER
IC901 (2/2)
LOW-PASS
FILTER
IC901 (1/2)
9
7
4
VOLUME
CONTROL
2
8
LINE AMP
IC903 (1/2)
FILTER AMP
IC903 (2/2)
AGC
Q905
MUTING
Q999
OVER LOAD
DETECT
Q1004, 1054
STANDBY
SWITCH
Q1001-1003
LINE AMP,
ELECTRICAL VOLUME
IC902
SUB WOOFER AMP
IC502 (1/2)
SUB WOOFER AMP
IC502 (2/2)
1
AD-KEY
7
SW-SOLID-LED
5
SW-LINK-LED
94 SW-AD-KEY
59 SW-ON-LED
71 SW-LINK-LED
72
SW-MATRIX-
SURR-1-LED
SW-MATRIX-
SW-MATRIX-
SURR-2-LED
60
4
SW-MTRX-SURR-LED
6
SW-WIDE-LED
2
VOLUME
CN101
(TO SS-WGV8)
SYSTEM CONTROL
MHC-RG88
26
26
FL601
FLUORESCENT
INDICATOR TUBE
1 – 10, 12 – 22, 24 – 41, 43, 44
P1 – P41
1G – 15G
100 – 86
17 – 12
67 – 72
64 – 66
F01 – F06
BPF0 – BPF5
4 LINE IN
11
L+R
BAND-PASS
FILTER
IC602
73 ALL-BAND
6 REC IN
80 VOLUME-A
79 VOLUME-B
79 VOLUME-B
ROTARY
ENCODER
S748
VOLUME
X
(Page 25)
E
SPEANA
X601
4MHz
83 X1
82 X0
52 – 59, 74
LED-TAPE,
LED-TUNER,
LED-MD-VIDEO,
LED-CD,
LED-GAME,
LED-DISC1,
LED-DISC2,
LED-DISC3,
LED-REC
LED DRIVE
Q601 – 605,
Q791 – 793, 795
D604 – 608,
D791 – 793, 795
D794
KEY0 – KEY2
S751, 752, 754 – 762,
S765 – 780, 782 – 792
60
I2C-DATA
61
I2C-CLOCK
77
RESET
30 IIC-DATA
29 IIC-CLK
41 GC-RESET
29 IIC-CLK
41 GC-RESET
74 POWER-KEY
73 DISPLAY-KEY
S749
S750
DISPLAY
75 STBY-LED
4 SIRCS
X502
16MHz
15 X-IN
13 X-OUT
X501
32.768kHz
10 XC-IN
11 XC-OUT
38
CD-POWER
SYSTEM CONTROLLER
(CD MECHANISM CONTROL)
IC501 (4/4)
84
STBY-RELAY
12
RESET
20
AC-CUT
B+ SWITCH
Q911, 912
RECT
D906 – 909
RECT
D914 – 917
CD +3.3V
+3.3V
REGULATOR
Q102
+5V
REGULATOR
IC911
M +9V
M +7V
A +10V
TC +10V
D920 – 922
D502
D504
D501
D503
+4V
REGULATOR
IC951
+4V
REGULATOR
IC971
D +4V
+9V
REGULATOR
IC961
+10V
REGULATOR
IC101
CD D+5V
CD A+5V
RESET SIGNAL
GENERATOR
IC601
D505
RECT
D918, 919, 923, 924
RECT
D972 – 975
LED DRIVE
Q794
T972
SUB POWER
TRANSFORMER
RECT
D541
RECT
D543
+VL
–VL
–VL
+VH
–VH
–VH
– 33V
REGULATOR
Q941
POWER ON/OFF
RELAY DRIVE
Q971
– VG
RECT
D977
VF1
VF2
RY971
AC IN
T910
MAIN POWER
TRANSFORMER
RESET
SWITCH
Q601
REMOTE CONTROL
RECEIVER
IC603
TO FLUORESCENT
INDICATOR TUBE
FL601
D +3.3V
EVER +4V
VOLTAGE
SELECTOR
S901
FLUORESCENT
INDICATOR TUBE DRIVER,
KEY CONTROL
IC601
7-4. DIAGRAMA EM BLOCO – SEÇÃ O DISPLAY/KEY CONTROL/POWER SUPPLY –
Placa
MOTOR
Placa
SENSOR (CD)
Placa
DRIVER
Placa
BD
Placa
SW
Placa
HEAD (A)
Placa
HEAD (B)
Placa MAIN TRANS
Placa
SENSOR
Placa
SUB WOOFER
TUNER PACK
Placa PRINCIPAL (main)
Placa
POWER
Placa PAINEL
Placa
CD SWITCH
Placa
CD OPEN
Placa
PAD SWITCH
Placa
GAME IN
Placa
VOL
Placa
SUB-TRANS
LOCALIZAÇÃO DAS PLACAS DE CIRCUITO
7-5. NOTA PARA DIAGRAMAS ESQUEMÁTICOS E PLACAS DE CIRCUITO IMPRESSO
Notas para placas de circuito impresso:
•
•
X
: peças extraídas do lado componente
•
Y
: peças extraídas do lado condutor
•
: padrão da camada que é vista
(Os outros padrões de camada não são indicados)
• Indicação dos transistores
• Indicação dos transistores
C
B E
Q
Estes são omitidos
Q
B
C
E
Estes são omitidos
Q
B
C
E
Estes são omitidos
Notas para diagramas esquemáticos:
• 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.
•
f
: internal component.
•
2
: resistor anti-chama
•
5
: resistor fusível
•
C
: descrição no painel
Nota: Os componentes identificados com a marca
0
são
críticos para a segurança. Somente os substitua por pe
ças numericamente identificadas nesse manual.
ças numericamente identificadas nesse manual.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: ajuste para reparo
• Tensões são obtidas comVOM (impedância de entrada 10 M
Ω
).
Variações de tensão são verificadas dentro de uma faixa
de tolerância;
de tolerância;
• Formas de onda são obtidas com um osciloscópio.
Variações de tensão são verificadas dentro de uma faixa
de tolerância;
de tolerância;
• Números circulados referem-se a formas de onda.
• Simbologia
F
: TUNER (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: REC
J
: CD PLAY (ANALOG)
c
: CD PLAY (DIGITAL OUT)
q
: MD/VIDEO (AUDIO) IN
j
: GAME IN (AUDIO)
k
: GAME IN (VIDEO)
N
: MIC INPUT
27
27 27
MHC-RG88
28
28
7-6. PLACA DE CIRCUITO IMPRESSO – Placa BD –
qg
IC501
qd
(X-OUT)
qf
IC501
qa
(XC-OUT)
2.4 Vp-p
30.5
µ
s
1.9 Vp-p
62.5 ns
• FORMAS DE ONDA
– Placa BD –
– Placa BD –
1.1
±
0.4 Vp-p
1
IC103
qg
(RFAC) (CD Play Mode)
2.5 Vp-p
7.5
µ
s
2
IC101
wh
(MDP) (CD Play Mode)
0.3 Vp-p
3
IC101
el
(TE) (CD Play Mode)
0.4 Vp-p
4
IC101
ra
(TE) (CD Play Mode)
0.65
±
0.15 Vp-p
5
IC101
t;
(RFDC) (CD Play Mode)
5 Vp-p
59 ns
2.1 Vp-p
12.1
µ
s
qa
Q302, Q303 (Base) (Rec Mode)
10.8Vp-p
12.1
µ
s
qs
Q302, Q303 (Collector) (Rec Mode)
6
IC101
yj
(XTAO)
– MAIN Board –
0.4 Vp-p
12.1
µ
s
qd
Q302, Q303 (Emitter) (Rec Mode)
2.8 Vp-p
250 ns
wa
IC601
is
(X0)
– PANEL Board –
IC102
IC101
IC103
A
B
C
D
1
2
3
4
M102
(SLED)
2
8
8
7
1
M101
(SPINDLE)
OPTICAL PICK-UP
BLOCK
(A-MAX.3)
TP
(DVC)
TP
(RFAC)
TP
(FEI)
TP
(FEO)
TP
(TEO)
TP
(RFDC)
(Page 33)
D101
B-4
IC101
C-3
IC102
B-2
IC103
D-2
Q101
C-1
Q102
B-4
• Semiconductor
Location
Ref. No.
Location
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