Pioneer SX-205 Service Manual - Page 7

1.5 HEAT SINK SECTION • CONTRAST OF SX-305RDS/HYXK/EW, HYXK/GR, SX-205RDS/HYXK/EW, HYXK/GR AND HVXK SX-305RDS/HYXK/EW, HYXK/GR, SX-205RDS/HYXIVEW, HYXK/GR and HVXK have the same construction except for the following: Mark No. Symbol & Description SX-305RDS HYXK/EW HYXK/GR Part No. HYXK/EW SX-205RDS HYXK/GR HVXK Remarks NSP 1 Heat sink A 3 Transistor (Q1, 02) A 4 Transistor (Q3, O4) ANH1475 2SC5198(P) 2SA1941(P) ANH1475 2SC5198(P) 2SA1941(P) ANH1476 2SC5196(P) 2SA1939(P) ANH1476 2SC5196(P) 2SA1939(P) ANH1476 2SC5196(P) 2SA1939(P) • PARTS LIST FOR SX-305RDS Mark No. Description Parts No. NSP 1 Heat sink ANH1475 2 Mica wafer AEE7010 A 3 Transistor (Q1, Q2) 2SA5198 4 Transistor (Q3, Q4) 2SA1941 4 5 Screw ABA1194 NSP 6 REG ASSY 7 Screw AWZ8389 BB230P080FZK Silicone grease C3. 5 4 02 2 C). 5 5 6 3 3 5 01' 4 2 03 • 2 2 CD O o 2. SCHEMATIC AND PCB CONNECTION DIAGRAMS 2.1 OVERALL SCHEMATIC DIAGRAM NOTE FOR SCHEMATIC DIAGRAMS (Type 2A) 1. When ordering service parts, be sure to refer to "PARTS LIST of EXPLODED VIEWS" or "PCB PARTS LIST". HVXK1230V HYXK/EW,HYXK/GR AC 220-230V 50/60Hz 2. Since these are basic circuits, some parts of them or the NEUTRAL values of some components may be changed for improve- LIVE ment. POWER TRANSFORMER ATS7120 for SX-305RDS ATS7121 for 5X-205r:205 th O PRAISMSAYRYI AWZ8391; 3. RESISTORS: Unit• k•kt-2, M•MQ, or 52 unless otherwise noted Rated power 1/4W, 1/6W, 1/8W, 1/10W unless otherwise noted Tolerance (F)• -±1%, (G) 12%, (K). +10%, (M): r20% or 15% unless otherwise noted ADG113Bf o r /HYXK/EW, ADG1140-""" for /HVXK O O C 4. CAPACITORS: Unit: p:pF or µF unless otherwise noted Ratings• capacitor (µF)/ voltage (V) unless otherwise noted Rated voltage. 50V except for electrolytic capacitors 5. COILS Unit m mH or µH unless otherwise noted 6. VOLTAGE AND CURRENT: or - V : DC voltage (V) at no input signal unless otherwise noted. mA or • mA : DC current at no input signal unless otherwise noted 7. OTHERS• • ® or 0 Adjusting point. • < Measurement point. • The A mark found on some component parts indicates the im- portance of the safety factor of the parts. Therefore, when re- placing, be sure to use parts of identical designation. BROWN J1O1 DB125NBO YELLOW J1O2 DB425NB0 BLUE KN403 I AKF -116- MA IN POWER BROWN SWITCH° J402 17B1208B° ASH -501 A J403 DBI2OBBO C9 I- 1KN404 N U ACG7020-1 ACG702 A F AEK1056- (T2 A L 250V) for SX-305R s AEK1055- (T1 .5A L 250 for SX-205R• 4 ATT1254- 8. SCH-O ON THE SCHEMATIC DIAGRAM: • SCH-LI indicates the drawing number of the schematic diagram. (SCH stands for schematic diagram.) 9. SWITCHES (Underline indicates switch position): FRONT ASSY S826 • STATION + S827 • STATION S828 • CLASS S829 . EON MODE S830 : TUNING + S831 • TUNING S832 : FM/AM S833 . PHONO S834 • TAPE 2 MONITOR S835 : TAPE 1/VCR S836 : LOUDNESS S837 : MEMORY S838 : CD S839 LD/DVD S84O TUNER S841 . CHARACTER/SEARCH S842 : RF ATT 2 3 4 SP SW ASSY AWZ8039 6 (SX-305RDS) 7 AWZ8046 a (SX - 2O5RDS) ( SCH-2) 2 3 4 5 6 7 B Z •Tr 9 0 0 a KPE15 (7 C) 0 c)() OO J4 D1 5A15 - 350- 2651 ®880C)006860660 AKT1019 -- TRANS ASSY AWZ8040 P SP ASSY AWZ8041 (-►SCH-2) (6