Casio PCR-255 Service Manual page 28

1. MAIN PCB BLOCK
I t e m Code No.
MAIN PCB ASS'Y
Main PCB E266-1 ass'y (PCR-260)
Main PCB E267-1 ass'y (PCR-255)
IC4 2120 6253 Monolithic IC
IC2 2120 7393 Reset IC
LSI
Q4 2200 9141 Transistor
Q7 2220 2456 Transistor
Q2 2250 1022 Transistor
Q3 2250 1029 Transistor
Q1 2250 1036 Transistor
Q6 2250 0847 Digital transistor
D5,6,9 2315 2689 Diode
D7 2301 0046 Diode
D1,2,3,4,8 2315 2682 Diode
ZD3 2315 2766 Zener diode
ZD5 2315 2654 Zener diode
ZD2 2315 2661 Zener diode
ZD4 2315 2759 Zener diode
ZD1 2315 2675 Zener diode
R10,11,12, Carbon film resistor
R18,19,20
R5 Carbon film resistor
R17 Carbon film resistor
R1,15,21, Carbon film resistor
R22,23
R8 Carbon film resistor
R6 Carbon film resistor
R13 Carbon film resistor
R9 Carbon film resistor
R14 Carbon film resistor
R16 Carbon film resistor
R4 Carbon film resistor
R7 Carbon film resistor
R2 2700 7821 Metal film resistor
R3 2775 1225 Metal film resistor
C11 2807 2735 Electrolytic capacitor
C4,7 2807 2315 Electrolytic capacitor
C3 2807 2658 Electrolytic capacitor
C20,23,31 2820 3778 TF capacitor
C2,16,19,28 2825 0427 TF capacitor
C1,3,17 2818 0454 Ceramic capacitor
C21,22 2818 3291 Ceramic capacitor
C14,15 2818 0446 Ceramic capacitor
C10,12 2818 0390 Ceramic capacitor
C8,9,18,24, 2818 0403 Ceramic capacitor
C25,26,27
CN7 3500 1077 Connector
Parts Name
— 26 —
Specification
E211682*7
E211683*6
LB1268
S-80728AN-Z
UPD78044AGF195-3B9
2SA933(K,P,Q,R)
2SC945(K,P,Q,R)
2SD1803(T)
2SD1961(S)
2SD2396(K)
DTC143ZS
1S2075K
1S2471
1SR35-100A
RD24EB2
RD3.3EB2
RD36EB1
RD4.3EB2
RD6.8EB1
CR-25-100KOHMJ
CR-25-100OHMJ
CR-25-150OHMJ
CR-25-1KOHMJ
CR-25-2.2KOHMJ
CR-25-24KOHM-J
CR-25-330KOHMJ
CR-25-4.7KOHMJ
CR-25-470KOHM-J
CR-25-560OHMJ
CR-25-750OHM-J
CR-25-75OHM-J
CRH100-FH11J-10R
CRH100-FH11J-1R0
RE2-50V4R7M
RE3-10V101M
RE3-25V472M
ECQ-B1H-103KF
RT-DSTC50TKYR103K
RT-HE12TKYB103K
RT-HE40TKCH120J
RT-HE40TKYB101K
RT-HE40TKYB221K
RT-HE60TKYB222K
52011-0810
Version Q R
1 A
1 A
1 A
1 A
1 A
1 B
1 B
1 B
1 B
1 B
1 B
3 B
1 B
5 B
1 B
1 B
1 B
1 B
1 B
5 C
1 C
1 C
5 C
1 C
1 C
1 C
1 C
1 C
1 C
1 C
1 C
1 C
1 C
1 C
2 C
1 C
3 C
4 C
3 C
2 C
2 C
2 C
7 C
1 C