Sharp GX-CH170X - Notes on Schematic Diagram; Types of Transistor and Led

GX-CH170X/CH170Z
SW1 BAND [GX-CH170Z ONLY] FM—SW2—SW1
—MW
SW4 PICKUP IN ON—OFF
SW201 RECODE/PLAYBACK R—P
SW251 DUBBING SPEED/BEAT CANCEL NORMAL A—
NORMAL B—
HIGH C/A—B—C
SW253 BAND [GX-CH170X] FM—AM
SW253 TAPE SELECTOR/FM MODE NORMAL—CrO2/
[GX-CH170Z] FM STEREO—
FM MONO
SW601 TAPE 1 MAIN ON—OFF
SW602 TAPE 2 MAIN ON—OFF
SW603 TAPE1/2 SELECTOR ON—OFF
SW651 FUNCTION/REMOTO CONTROL CD—TUNER—
TAPE—OFF/
ON—OFF
SW701 POWER ON—OFF
– 16 –
NOTES ON SCHEMATIC DIAGRAM
1. Tuner
( ): AM mode
Marking except for ( ): FM mode
2. CD
( ): Play mode
Marking except for ( ): Stop state
3. Deck section
( ): Record mode
Marking except for ( ): Playback mode
Display / Control section:
( ): Active state
Marking except for ( ): CD Function mode at stop state
• Schematic diagram and Wiring Side of P.W.Board for this
model are subject to change for improvement without prior
notice.
• 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.
• Resistor:
To differentiate the units of resistors, the 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 an
ohm resistor. The resistor designated "Fusible" is a fuse type
resistor
• 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
• The indicated voltage in each section is the one measured by
Digital Multimeter between such a section and the chassis
with no signal given.
REF. NO DESCRIPTION POSITION
SW702 CD-STOP ON—OFF
SW703 CD-PLAY ON—OFF
SW704 CD-PAUSE ON—OFF
SW705 CD-CUE ON—OFF
SW706 CD-REVIEW ON—OFF
SW707 CD-DISC 1-2 ON—OFF
SW708 CD-RANDOM ON—OFF
SW709 VOLUME UP ON—OFF
SW710 VOLUME DOWN ON—OFF
SW711 CD-PROGRAM ON—OFF
SW712 CD-CLEAR ON—OFF
SW713 CD-TRAY1 OPEN/CLOSE ON—OFF
SW714 CD-TRAY2 OPEN/CLOSE ON—OFF
SW981 TRAY/MECHANISM UP ON—OFF
SW982 TRAY1 1a—1b
SW983 TRAY2 2a—2b
REF. NO DESCRIPTION POSITION
Figure 16 TYPES OF TRANSISTOR AND LED
ECB
(S)(G)(D)
(1) (2) (3)
FRONT
VIEW
BCE
FRONT
VIEW
2SC2001 K
2SB561 C
2SB562 C
2SD468 C
KRA102 M
KRC102 M
KTA1266 GR
KTC3199 GR
2SD2394 F
FRONT
VIEW
FRONT
VIEW
2
3
GREEN
1
RED
3N8PGN33
3N4PDN32
3N4GDN32