Sharp MD-X7H, Руководство по обслуживанию

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MD-X8H
NOTES ON SCHEMATIC DIAGRAM
•
Resistor:
To differentiate the units of resistors, such symbol as K and M are
used: the symbol K means 1000 ohm and the symbol M means 1000
kohm and the resistor without any symbol is ohm-type resistor.
Besides, the one with “Fusible” is a fuse type.
•
Capacitor:
To indicate the unit of capacitor, a symbol P is used: this symbol P
means micro-micro-farad and the unit of the capacitor without such
a symbol is microfarad. As to electrolytic capacitor, the expression
“capacitance/withstand voltage” is used.
(CH), (TH), (RH), (UJ): Temperature compensation
(ML): Mylar type
(P.P.): Polypropylene type
•
Schematic diagram and Wiring Side of P.W.Board for this model are
subject to change for improvement without prior notice.
Figure 31 TYPES OF TRANSISTOR AND LED
•
The indicated voltage in each section is the one measured by Digital
Multimeter between such a section and the chassis with no signal
given.
1. In the tuner section,
( ) indicates AM
< > indicates FM stereo
2. In the main section, a tape is being played back.
3. In the deck section, a tape is being played back.
( ) indicates the record state.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
•
Parts marked with “ ” ( ) are important for maintaining
the safety of the set. Be sure to replace these parts with specified
ones for maintaining the safety and performance of the set.
REF. NO DESCRIPTION
POSITION
SW701 POWER ON/STAND-BY OFF
SW702 MD > MD EDIT OFF
SW702A PICKUP IN OFF
SW703 TRACK OFF
SW704 CD > MD EDIT OFF
SW705 MD RECORD OFF
SW706 MD EJECT OFF
SW707 COMPUTER NETWORK OFF
SW721 DISPLAY OFF
SW722 TIMER/DELETE OFF
SW723 NAME/TOC EDIT/RDS OFF
SW724 MESSAGE OFF
SW725 TUNING/CURSOR DOWN OFF
SW726 TUNING/CURSOR UP OFF
SW727 AUX OFF
SW728 TUNER (BAND) OFF
SW729 CD DISC 1 OPEN/CLOSE OFF
SW730 CD DISC 2 OPEN/CLOSE OFF
SW731 CD DISC 3 OPEN/CLOSE OFF
SW771 ENTER OFF
SW772 CD PLAY/PAUSE OFF
SW773 CD STOP OFF
SW774 CD DISC 1 PLAY OFF
SW775 CD DISC 2 PLAY OFF
SW776 CD DISC 3 PLAY OFF
SW781 MULTI CONTROL DOWN OFF
SW782 MULTI CONTROL RIGHT OFF
SW783 MULTI CONTROL LEFT OFF
SW784 MULTI CONTROL UP OFF
SW785 EQUALIZER OFF
SW786 X-BASS OFF
SW787 3D SURROUND OFF
SW788 MD STOP OFF
SW789 MD PLAY/PAUSE OFF
SW901 RESET OFF
SW1952A/B WRITE PRO/DIRECT OFF
SW1953 LEAD IN OFF
SW1954 MD PLAY OFF
SW1955 MD RECORD OFF
SW1956 LOADING ON
SWB101, 102 CAM 1, 2 OFF
SWB103, 104 CAM 3, 4 OFF
SWB105 CD EJECT OFF
SWB106 CD TRAY CLOSE OFF
SWB107 CD IN OFF
SWB108 CD SET OFF
REF. NO DESCRIPTION
POSITION
2SA562 Y
2SC1740 SR
2SC2878 A
2SC380 O
2SD468 C
DTC363 TS
KRA107 M
KRC107 M
KTA1266 GR
KTC3199 GR
KTC3203 Y
RN2404
RNC1407
RNC1404
RN1406
2SA1314 C
2SB1238 R
2SA1162 G
2SC2412 KR
2SK2909
VIEW
FRONT
E C B
(S) (G) (D)
(1) (2) (3)
2
1
3
TOP
VIEW
B
(G)
E
(S)
(D)
C
TOP
VIEW
VIEW
FRONT
B C E
(D) (G) (S)
(3) (2) (1)
2SD2012
FRONT
VIEW
B C E
2SK1473
FRONT
VIEW
G D S
VIEW
FRONT
E C B
SLR325MG
R342VRC7
R342MGF7
VIEW
FRONT