Chapter 6. Circuit Schematics And Parts; Notes On Schematic Diagram; Types Of Transistor And Led - Sharp CD-MPX870W Service Manual

CHAPTER 6. CIRCUIT SCHEMATICS AND PARTS LAYOUT

[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 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 pico-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 improve-
ment without prior notice.
REF. NO DESCRIPTION
JOG701 VOLUME
SW701 POWER ON /STAND-BY
SW702 CD
SW703 TUNER (BAND)
SW704 AUX
SW705 TAPE
SW707 PLAY
SW708 FAST FORWARD/PRESET UP

[2] 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.
4. In the power section, a tape is being played back.
5. In the CD section, the CD is stopped.
Parts marked with "
•
tant for maintaining the safety of the set. Be sure to
replace these parts with specified ones for maintain-
ing the safety and performance of the set.
REF. NO
POSITION
SW709
MAX—MIN
SW710
ON—OFF
SW711
ON—OFF
SW712
ON—OFF
SW713
ON—OFF
SW714
ON—OFF
SW715
ON—OFF
SW716
ON—OFF
6 – 1
( ) indicates the record state.
" (
DESCRIPTION
FAST REWIND/PRESET DOWN
STOP
DISC 1
DISC 2
DISC 3
DISC 4
DISC 5
OPEN/CLOSE
D1SS119
CD-MPX870W
) are impor-
POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF
ON—OFF