Chapter 5. Circuit Description; Notes On Schematic Diagram; Types Of Transistor And Led - Sharp CD-MPS900 Service Manual

CD-MPS900/CD-MPS99
Audio CHAPTER 5. E Market CD-MPS900/CD-MPS99 Service Manual CD-MPS900/CD-MPS99
CIRCUIT DESCRIPTION

[1] 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 resis-
tor. 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 pico-farad and the unit of the capacitor without such a sym-
bol 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.
REF. NO DESCRIPTION
JOG701 VOLUME
NSW1 PICKUP IN
SW1 CLAMP
SW2 TRAY SW1
SW3 TRAY SW2
SW4 DISC
SW701 POWER ON/STAND-BY
SW702 CLOCK/TIMER
SW703 TUNING UP
SW704 TUNING DOWN
SW705 FAST REWIND/PRESET DOWN
SW706 EQUALIZER
SW707 FAST FORWARD/PRESET UP
SW712 TUNER (BAND)
SW713 CD
SW714 TAPE
SW715 GAME/VIDEO
SW716 X-BASS/DEMO

[2] Types of transistor and LED

POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
FRONT
B
VIEW
(3)
E
(1)
E C B
(S)(G)(D)
(1)(2)(3)
KRC104 M KTC3194 Y
KTA1266 GR KTC3199 GR
KTA1271 Y KTC3200 GR
KTA1273 Y KTC3203 Y
KTA1274 Y
TOP VIEW
KDS184
• The indicated voltage in each section is the one measured by Digi-
tal Multimeter between such a section and the chassis with no sig-
nal 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 "
taining 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
SW717 LEFT
SW718 UP
SW719 CHARACTER
SW720 RIGHT
SW721 ENTER
SW722 DOWN
SW723 MP3 NAVIGATION
SW725 PLAY/REPEAT
SW726 STOP
SW727 REC/PAUSE
SW728 MEMORY/SET
SW729 OPEN/CLOSE
SW730 DIRECT PLAY
SW731 DISC2
SW732 DISC4
SW733 DISC5
SW734 DISC3
SW735 DISC1
TOP VIEW
TOP C
VIEW (2)
DS1SS133
KRA107 S
KRC102 S
KRC104 S
KTA1504 Y
KTC3875 GR
2SD601 AR
FRONT
VIEW
FRONT
VIEW
A C A C
D10XB60F 304VT2H3
SDPB50CD
5 – 1
" ( ) are important for main-
DESCRIPTION POSITION
TOP VIEW
1N4004S
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF