Pcb Layout - Casio PCR-255 Service Manual

11. PCB LAYOUT

A C I N
1
G N D
5
6
C 1
C N 8
A C I N
7
H O T
1
1 0
T 1
B - 2
C 3
C 2 B - 3
C - 2
4 1
V F 2
C - 3
D - 3
F - 1
F - 2
C 1 7
C 1 6
µ P D 7 8 0 4 2 A G F
C28
E266-1
E 266
A
C29
- 1 A
B-15
— 23 —
R2
B
E
C10
R3
Q1
CN1
B-1
2
1
ZD2
Q2
C11
E B
C7
D6
E
R4
R7
C5
D5 E
Q4
C4
ZD4
D7
R 5
VN
T 2
R10
2 0
C N 3
C13
B - 4
D I S P 1
Q 5
B
E
VDD
C - 3
X 1
R13
X 2
GND
B-10
C-15
C-16
C-17
E B
Q7
C-18
C-19
C-20
IC4
LBI268
A-1
A-2
L1
C30
ZD1
Q3
B
B
VF1
1
D-2
BZ1
C19
Q6
E
B
R15
VP
C-11
ZD5
R17
C-21
C-22
C-23
B-14
A-3
L2
A-4
C31