Checking Terminals And Component - Casio QW-2140 Service Manual & Parts List

3-2. CHECKING TERMINALS AND COMPONENT

C14 Capacitor/Chip
C13 Capacitor/Chip
C12 Capacitor/Chip
C11 Capacitor/Chip
C16 Capacitor/Chip
C15
1
2
GND
KI4
KI6
KI5 KI7 KI8
EMP EMP
KC6 KC5
GND
GND
3.PCB ASS'Y
(7640 3837)
KI2
C4 Capacitor/
Chip
C7 Capacitor/Chip
C3 Capacitor/Chip
C2
Capacitor/Chip
Top view of P.C.B. ass'y
Rel Resistor/ Xtal2
Chip
Inverter
INV
LL2
Di
Capacitor/Chip
ELD
R6 9
R6
R9
8
8 8 R8
R9
7 7 R8
R6 R6
GND
7
R6
GND
VDD2
VC2 VC3 VC4
VC1
VCH
VDD2
GND
C21 Capacitor/
Chip
C5
Capacitor/Chip
C8 Capacitor/
Tantalum
C1
Capacitor/Chip
C6
Capacitor/Chip
Oscillator/Crystal
R5 Resistor/Chip
Coil
R4
Resistor/Chip
C20 Capacitor/
Chip
Diode
KC1
CIL
ELD
ELD
CIL
12
KI1
KI1
VDD2
12
RT1
RT2
GND
VCPE GND
GND
KI3
KI3
L
VDD2
L
LD1
L
L
KI9
GND
KI9
BD1
VC1
VCH
Tr1 Transistor
Z
Varistor
Coil
LL1
Cel Capacitor/Chip
Bottom view of P.C.B. ass'y
— 8 —
IC
Detection IC
Xtal1 5. Oscillator/Crystal
(1003 0868)
Xtal3 Oscillator/
Crystal
R7
Resistor/
Chip
6
5
10
4
KC2
12 11
KI4
GND
15 14
KI8
GND
KI7
GND
1
1
VDD2
KI6
KI5
VOSC
GND
AC
KI2
VDD2
XT XTB
GND
XT
GND
GND
VDD2
R2
Resistor/
Chip
C10 Capacitor/
Tantalum
C9 Capacitor/Tantalum
CT
4. Capacitor/Trimmer
(7103 0458)