Service manual

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CD-DD4500
• 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 “ ” ( ) 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.
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 improvement without prior
notice.
REF. NO
DESCRIPTION
POSITION POSITION
SW714 DIMMER ON—OFF
SW715 X-BASS ON—OFF
SW716 EQUALIZER ON—OFF
SW722 CD ON—OFF
SW723 TAPE ON—OFF
SW724 TUNING/DOWN ON—OFF
SW725 MEMORY SET ON—OFF
SW726 FAST REWIND ON—OFF
SW727 FAST FORWARD ON—OFF
SW728 PLAY ON—OFF
SW729 STOP ON—OFF
SW731 REC/PAUSE ON—OFF
SW732 TUNING/UP ON—OFF
SW733 VIDEO ON—OFF
SW734 TUNER ON—OFF
REF. NO
DESCRIPTION
SW1 OPEN/CLOSE ON—OFF
SW2 CLAMP ON—OFF
SW3 DISC NUMBER ON—OFF
SW4 PICKUP IN ON—OFF
SW701 POWER ON—OFF
SW702 CLOCK ON—OFF
SW703 TIMER/SLEEP ON—OFF
SW704 BYPASS ON—OFF
SW705 NORMAL ON—OFF
SW706 PHANTOM ON—OFF
SW707 VIRTUAL ON—OFF
SW708 DISC 1 ON—OFF
SW79 DISC 2 ON—OFF
SW710 DISC 3 ON—OFF
SW711 DISC SKIP ON—OFF
SW712 OPEN/CLOSE ON—OFF
TYPES OF TRANSISTOR AND LED
(1) (2) (3)
(S) (G) (D)
E C B
FRONT
VIEW
KRA107 M
KRC102 M
KRC104 M
KRC107 M
KTA1271 Y
KTA1274 Y
KTA1266 GR
KTA1046 Y
KTA1273 Y
KTC3203 Y
KTC3199 GR
2SA1015 GR
2SC2878 B
2SD468 C
KTC2026 Y
2SB1565 F
4204SRT7
4204UYT7
BCE
FRONT
VIEW
FRONT
VIEW