Checking Terminals And Components; P1 ~ P5 Pads - Casio QW-2741 Service Manual

2-3. CHECKING TERMINALS AND COMPONENTS

Cbat Capacitor/Chip
Ccp9 Capacitor/Chip
Rpd Resistor/Chip
Rbat Resistor/Chip
Cf12 Capacitor/Chip
Rcp Resistor/Chip
Cf13
Cagc
12 13 14 16
GND
GND
1
9 R6
GND
GND
R6
GND
VDD2
DO
3
3
KI8
GND
KI2
GND
KI8 GND
VDD2
GND
KI7 GND
GND
VPM
KI6 GND
KI2
VC3 GND GND GND GND
GND
VDD1
VC4 VDSP V_TQ VDD3
GND
KI3
VDD2
VC1
XT
VC2 VDD3 XTB
KI2
VDD1 AC
3. PCB ASS'Y
V_TQ
(7640 6705)
VDSP
VC3
VC4
KI5
GND
KI6
KI8
KI7 KI9
LC5 LC4 LC3
VCH
C2 Capacitor/Chip
C3 Capacitor/Chip
C7 Capacitor/Chip
C8 Capacitor/Chip
C4 Capacitor/Chip
C6 Capacitor/Chip
RPM Resistor/Chip
Top view of P.C.B. ass'y

2-4. P1 ~ P5 PADS

Never solder or desolder these pads, because they have been selected best in the production line.
A new PCB ass'y as a spare parts will be supplied with factory adjustment of these pads.
Capacitor/Chip
Capacitor/Chip
Creg Capacitor/Chip
Rant2 Resistor/
Chip
INV Inverter
LL2 Coil Z
GND
KC1
KI9
16 2
16
L+
L-
O1
O2
KI4
GNDB
GND
GND
R1
GND
R2
LD1
GND CLF1 CLF2
R3
VSC
KI1
BD1
VPM
EMP
SL
VOUT
PON
O2 D0
SCIN
T1
SCR
T5
T4 T2
R3
T3
R2
R1
KC4 KC3
LC2 LC1
Di1 Diode
Cel Capacitor/
Chip
RP1
Cp Capacitor/Chip
C9 Capacitor/Chip
9. Cushion/506
(7211 9631)
Tr1 Transistor
LL1 Coil
Di2 Diode
R1 Resistor/
Chip
Varistor Rxt1
VDD2
KC1
KC1
KI9
R1
VDD2
R1
BD1
L R1
02
GND
KI4
L
GND
L
L
VDD2
LD1
VDD2
KI1
VDD2
VOUT
VSC
VSC
VSC GND
GND
SCIN GND
SCIN GND
SCIN
SCR
KC3
Rb Resistor/
Chip
RP2 Resistor/
Chip
Resistor/Chip
24. Tape/Adhesive
Bottom view of P.C.B. ass'y
— 4 —
IC Detection IC
Rxt2 Resistor/Chip
Xtal2 Oscillator/Crystal
C5 Capacitor/Chip
Cxt Capacitor/
Chip
Resistor/
Chip
2 1
D0
4
R7 7
R4
R4
R7
VC1
GND
GND
AC
VDSP
GNDB
XTB
XT
GND XT
KC4 KI9 VCH
C1 Capacitor/Chip
CT 4. Capacitor/Trimmer
(1001 0950)
Xtal1 5. Oscillator/Crystal
(7110 6323)
(7229 0789)
KI2
7 5
GND
VCH
KI3