Service manual

QT-CD700W
15
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.
• 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. Tuner
( ): AM mode
: FM mode
2. CD
( ): Stop state
: Play mode
3. Deck section
: 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.
TYPES OF TRANSISTOR
ECB
FRONT
VIEW
2SA933
DTA124ESA
2SB1237
EBC
FRONT
VIEW
9014
9015
8050
REF NO. DESCRIPTION POSITION
SW2 Record/Playback Rec P. B
SW1 Function selector Radio-Tape CD
SW4 Band selector FM. ST-FM-AM
SW3 Beat cancel A-B
SW601 Tape man OFF-ON
SW651 Voltage selector AC220-240V
SW702 Pickup in AC110-127V
S4 Play/Pause OFF-ON
S3 Stop OFF-ON
S1 DOWN/F.REVERSE OFF-ON
S2 UP/F.FORWARD OFF-ON
S6 Repeat OFF-ON
S5 Program OFF-ON
S7 Random OFF-ON