Casio QW-2228, Service Manual & Parts List

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3. DRAWINGS : QW-2228
3-1. BLOCK DIAGRAM
1
Xtal
CT
LD2
BAT
KI1
KI2
2
KI3
KI4
LD1
LD3
VSS2
L27 L1
VCH VSS3
LSI
LCD
TOTAL
BONDING 59PINS
58PINS
VC1 XTB XT VC2
BD
C1
C4
VDD
C8
C7
C6
VSS1
C2 C3
C5
+
S1
S2
S3
SA
S4
KI5
KI6
T
AC
KI7
KI8
N1
N2
N3
N4
LL2
PZ
Tr
LC1 LC5
2
1. No bonding.
2. KI6: Open (No soldering)
KI7: Open (No soldering)
ELD
OUT1
OUT2
VCC
CIL
RT1
RT
LL1
IN1
IN2
RT2
GND
INV
EL1
R1
R2
FRONT MIDDLE
BACK MIDDLE
EL2
Di
SEG.
COM.
LC1 LC2 LC3 LC4 LC5
L 1
a9
h8
a8
PM
x0y2
e5
c5
AM
x0y6
g9
c9
d8
e9
x0y4
h9
b9
g8
f9
x0y3
c6 b6
i9
f5
b5
d9
x0y5
x1y2 x1y6 x1y4 x1y3 x1y5
x2y2 x2y6 x2y4 x2y3 x2y5
x3y2 x3y6 x3y4 x3y3 x3y5
x4y2 x4y6 x4y4 x4y3 x4y5
x5y2 x5y6 x5y4 x5y3 x5y5
x6y2 x6y6 x6y4 x6y3 x6y5
x6y1 c0 a0 x6y0 b0
x5y1 d0 f0 x5y0 g0
x4y1 e0 a1 x4y0 b1
x3y1 c1 f1 x3y0 g1
x2y1 d1 MINO x2y0 e1
x1y1 DST a2 x1y0 b2
x0y1 c2 f2 x0y0 g2
SPL d2 e2
a6 c3 d6 g6 b3
f6
SIG
a7
d3
e3
COL0
a3
c7
d7
e6
b7
g7
BAR e7 f7 c4 b4
g3
f3
MIN1
HYP d4 a4 COL1 g4
c8 b8 ALM e4 f4
f8 d5 a5 e8 g5
L 2
L 3
L 4
L 5
L 6
L 7
L 8
L 9
L 10
L 11
L 12
L 13
L 14
L 15
L 16
L 17
L 18
L 19
L 20
L 21
L 22
L 23
L 24
L 25
L 26
L 27
ALM SIG SPL
BAR
DST
AM
PM
y6
a9
d9
g9
f9
h9
i9
b9
c9
e9
a8
h8
HYP
COL1
COL0
MIN1 MIN0
d8
g8
f8
b8
c8
e8
a7
d7
g7
f7
b7
c7
e7
a6
d6
g6
f6
b6
c6
e6
a5
d5
g5
f5
b5
c5
e5
a4
d4
g4
f4
b4
c4
e4
a3
d3
g3
f3
b3
c3
e3
a2
a1
d2
d1
g2
g1
f2
f1
b2
b1
c2
c1 e2
e1
a0
d0
g0
f0
b0
c0
e0
y0
x0 x6
L1
L27 L26 L25 L24 L23 L22 L21 L20 L19 L18 L17 L16 L15 L14 L13 L12
L2 L3 L4 L5 L6 L7 L8 L9
L10 L11
LC1 LC2 LC3 LC4 LC5