Pioneer sx 1280 schematic

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SX-I 280

13. SCHEMATIC DIAGRAMS, P.C. BOARD PATTERNS
AND PARTS LIST

13.1 SCHEMATIC DIAGRAM AND MISCELLANEOUS PARTS

Miscellaneaus Parts

NOTE:

0 Capacitors: in uF unless otherwise noted p:pF
o Resistors: in 9., %W unless otherwise noted links}, M :M 9.

TRANSFORMERS AND COILS

Symbol Part No. Dacription
T1 ATT-447 Power transformer (For KU type)
ATT-460 Power transformer (For KC type)
T2 ATS-505 Bar antenna assembly
T3 T220215 Balun
L1 T24-030 Choke coil
CAPACITORS
Symbol Part No. Description
C1 ACH-089 Electrolytic 15000 100V
CZ ACH-089 Electrolytic 15000 100V
C3 ACH-089 Electrolytic 15000 100V
C4 ACH-089 Electrolytic 15000 100V
C5 ACG-003 Ceramic 0.01 125V
(For KU type)
ACG-014 Ceramic 0.01 125V
(For KC type)
cs CKDYF 4032 so Ceramic 0.04 50v
C7 CKDYF 4032 50 Ceramic 0.04 50V
C8 CKDYF 4032 50 Ceramic 0.04 50V
C9 CKDYF 4032 50 Ceramic 0.04 50V
C10 CKDYF 4032 50 Ceramic 0.04 50V
C11 CKDYF 4032 50 Ceramic 0.04 50V
C12 CKDYF 4032 50 Ceramic 0.04 50V
C13 CKDYF 4032 50 Ceramic 0.04 50V
OTHERS
Symbol Part No. Description
825 ASK-080 Power switch
AKK-005 Lamp socket
R1 RDAPS 225J Carbon film resistor 2.2M KW
SEMICONDUCTORS
Symbol Part No. : Description
01 280746-R, S or O TransistOr
02 2SD746-R, S or 0 Transistor

Symbol Part No. Description
03 2SD746-R, S or Q Transistor
O4 2SD746-R, S or 0 Transistor
05 288706-R, S or O Transistor
06 25870642, 8 or O Transistor
Q7 2SB706-R, S or Q TransistOr
08 2SB706-R, S or Q Transistor

P.C. BOARD ASSEMBLIES

hie of these transistors I01 ~ 08) should have the same value.

Symbol Part No. Decription
AWE-092 Tuner assembly
AWF-031 EO amplifier assembly
GW$133 Function switch assembly
GWSJ 34 Cartridge load membly
GWM-105 Microphone jack assembly
AWG-OGO Flat amplifier assembly
AWG-059 Tone amplifier assembly
AWM-119 Filter amplifier assembly
AWN-074 Power amplifier assembly
AWM-121 Meter amplifier assembly
AWM-123 Protection assembly
AWR-157 Power supply assembly
AWX-126 Fuse assembly (For KU type)
AWX-139 Fuse assembly (For KC type)
AWX-127 Resistor assembly

LAMPS AND FUSES

' Part No.

Symbol Description
PL1 AEL029 Lamp (wedge type) 8v 0.3A
PL2 'AEL-029 Lamp (wedge type) 8V 0.3A
PL3 AEL-029 Lamp (wedge type) 8v 0.3A
P L4 A EL-029 Lamp (wedge type) 8V 0.3A
PLS AEL-069 Lamp with wires 8V 50mA
PL6 AEL-069 Lamp with wires 8V SOmA
PL? AEL-067 Lamp with wires 8V 50mA
PL8 AEL067 Lamp with wires 8V SOmA
PL9 AEL-OG'I Lamp with wires 8V 50mA
PL10 ASL-072 Lamp with wires 8V SOmA
FU1 AEK-301 Fuse 12A
FU2 ASK-103 Fuse 2A
FU3 AEK-106 Fuse 1A
FU4 AEK-106 Fuse 1A

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