Notes On Schematic Diagram; Types Of Transistor And Led - Sharp CD-K477W Service Manual

CD-K477W
• 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.
REF. NO DESCRIPTION
SW1 OPEN/CLOSE
SW2 MECHA UP
SW3 DISC NUMBER
SW4 PICKUP IN
SW991 VOLTAGE SELECTOR
SWD1 VOLUME JOG
SWD2 JOG
SWD3 X-BASS
SWD4 PRE EQ
SWD5 MENU
SWD12 TUNING UP/CUE
SWD13 STOP
SWD14 NORMAL EDIT
SWD15 HIGH EDIT
SWD16 REC/PAUSE
SWD17 F-PLAY
SWD19 SUB WOOFER VOLUME UP
SWD20 SUB WOOFER VOLUME DOWN
SWD24 4SP-1
SWD25 4SP-2
SWD27 PHANTOM
SWD28 NORMAL
SWD29 BYPASS
SWD30 TUNING DOWN/REWIND
FRONT
VIEW
E C B
(S) (G) (D)
(1) (2) (3)
KTA1266 GR
KRA109 M
KTA1270Y
KRC102 M
KTA1271 Y
KRC104 M
KTC3199 GR KRC107 M
KTC3203 Y
2SC535 C
KRA102 M
2SD468 C
2SC2878 A

NOTES ON SCHEMATIC DIAGRAM

POSITION
ON—OFF
ON—OFF
ON—OFF
ON—OFF
230-240V
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
ON—OFF
FRONT
VIEW
B C E
(D) (G) (S)
(3) (2) (1)
2SD2012
2SB1375
Figure 18 TYPES OF TRANSISTOR AND LED
• The indicated voltage in each section is the one measured
by Digital Multimeter between such a section and the chas-
sis 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 "
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
SWD31 CD PAUSE
SWD32 REVERSE MODE
SWD33 R-PLAY
SWD34 CLOCK
SWD35 MEMORY
SWD36 TIMER
SWD37 SLEEP
SWD38 CLEAR
SWD39 VIDEO/AUX 1
SWD40 VIDEO/AUX 2
SWD41 TAPE 1/2
SWD42 TUNER/BAND
SWD43 CD
SWD48 POWER
SWD49 KARAOKE
SWD50 DISC 1
SWD51 DISC 2
SWD52 DISC 3
SWD53 DISC SKIP
SWD54 OPEN/CLOS
SWF2 SPAN SELECTOR
SWM3 REC FWD
SWM4 REC RVS
SWM5 F.A.S
SWM6 CAM
FRONT
VIEW
SLR325 MG
SLR325 VR
KL052 UL
SLR505 MC
LMKD515B
– 18 –
" ( ) are important for
DESCRIPTION
FRONT VIEW
KV1236Z23
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
ON—OFF
ON—OFF
50/9
ON—OFF
ON—OFF
ON—OFF
ON—OFF