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ORDER NO.
RRV4140
SC-LX83

AUDIO/VIDEO MULTI-CHANNEL RECEIVER

SC-LX83
SC-LX73
THIS MANUAL IS APPLICABLE TO THE FOLLOWING MODEL(S) AND TYPE(S).

The voltage can be converted by the
Model Type Porew Requirement
following method.

SC-LX83 FXJ AC 110 V -----------

SC-LX83 DLPWXJ AC 220 V to 230 V / 240 V With the voltage selector

SC-LX73 FXJ AC 110 V -----------

SC-LX73 DLPWXJ AC 220 V to 230 V / 240 V With the voltage selector

This service manual should be used together with the following manual(s).
Model No. Order No. Remarks

SC-37/UXJCB RRV4137
SC-37/UXJCB RRV4138 PCB RETRIEVAL DIAGRAM

For SPECIFICATIONS and PANEL FACILITIES, refer to the operating instructions.

PIONEER CORPORATION 1-1, Shin-ogura, Saiwai-ku, Kawasaki-shi, Kanagawa 212-0031, Japan
PIONEER ELECTRONICS (USA) INC. P.O. Box 1760, Long Beach, CA 90801-1760, U.S.A.
PIONEER EUROPE NV Haven 1087, Keetberglaan 1, 9120 Melsele, Belgium
PIONEER ELECTRONICS ASIACENTRE PTE. LTD. 253 Alexandra Road, #04-01, Singapore 159936
PIONEER CORPORATION 2010
K-ZZZ AUG. 2010 Printed in Japan
1 2 3 4

1. EXPLODED VIEWS AND PARTS LIST
NOTES: Parts marked by "NSP" are generally unavailable because they are not in our Master Spare Parts List.
A The mark found on some component parts indicates the importance of the safety factor of the part.
Therefore, when replacing, be sure to use parts of identical designation.
Screws adjacent to mark on product are used for disassembly.
For the applying amount of lubricants or glue, follow the instructions in this manual.
(In the case of no amount instructions, apply as you think it appropriate.)
Nos. indicate the pages and Nos. in the service manual for the base model.
When ordering resistors, first convert resistance values into code form as shown in the following examples.
Ex.1 When there are 2 effective digits (any digit apart from 0), such as 560 ohm and 47k ohm (tolerance is shown by J=5%,
and K=10%).
56 x 101 561 RD1/4PU 5 6 1 J
47 x 103 473 RD1/4PU 4 7 3 J
R50 RN2H R 5 0 K
1R0 RS1P 1 R 0 K
B
Ex.2 When there are 3 effective digits (such as in high precision metal film resistors).
562 x 101 5621 RN1/4PC 5 6 2 1 F

CONTRAST TABLE
SC-37/UXJCB, SC-LX83/FXJ, SC-LX83/DLPWXJ, SC-LX73/FXJ and SC-LX73/DLPWXJ are constructed the same
except for the following:
SC-37 SC-LX83 SC-LX83 SC-LX73 SC-LX73
Mark No. Symbol and Description Remarks
/UXJCB /FXJ /DLPWXJ /FXJ /DLPWXJ
PCB ASSEMBLIES
NSP 1..AUDIO_COMPOSITE ASSY AWR7090 AWR7100 AWR7100 AWR7100 AWR7100
C P107-10 2..AUDIO ASSY AWX9647 AWX9735 AWX9735 AWX9735 AWX9735

P107-12 1..DIGITAL MAIN ASSY AWX9620 AWX9627 AWX9627 AWX9628 AWX9628

P107-13 1..DAC HIGH ASSY AWX9622 AWX9711 AWX9711 Not used Not used

P107-14 1..DAC LOW ASSY Not used Not used Not used AWX9659 AWX9659

P107-15 1..COMPONENT ASSY AWX9654 AWX9654 AWX9654 AWX9656 AWX9656

P109-1 1..ICEPOWER AMP ASSY AWH7024 AWH7031 AWH7031 AWH7033 AWH7033

NSP 1..INTERFACE_REG ASSY AWR7085 AWR7096 AWR7096 AWR7096 AWR7096
D
P109-4 2..INTERFACE ASSY AWX9605 AWX9701 AWX9701 AWX9701 AWX9701

NSP 1..MIC HP ICE ASSY AWM8190 AWM8245 AWM8245 AWM8244 AWM8244
P107-1 2..ICE BUFFER ASSY AWX9598 AWX9748 AWX9748 AWX9747 AWX9747

NSP 1..PRIM_DISPLAY ASSY AWM8191 AWM8207 AWM8206 AWM8214 AWM8213
P111-3 2..DISPLAY ASSY AWX9600 AWX9684 AWX9683 AWX9691 AWX9690
P109-3 2..PRIMARY ASSY AWX9604 AWX9696 AWX9695 AWX9696 AWX9695

PACKING SECTION
> P103-1 AC Power Cord ADG7111 ADG7076 ADG7062 ADG7076 ADG7062
P103-3 IR Bluster Cable ADF7007 ADF7007 ADF7007 Not used Not used
E
P103-5 Protection Sheet LX AEH7030 Not used Not used Not used Not used
P103-8 Packing Case AHD8677 AHD8679 AHD8680 AHD8686 AHD8687
P103-11 Operating Instrutions (En) ARB7446 Not used Not used Not used Not used

Operating Instrutions (En) Not used Not used ARB7449 Not used ARB7449
Operating Instrutions (Es) Not used Not used ARC7957 Not used ARC7957
Operating Instrutions (Zhtw) Not used ARC7956 Not used ARC7956 Not used
P103-14 RF Remote Caution ARM7131 ARM7131 ARM7131 Not used Not used
NSP P103-15 Warranty Card ARY7007 Not used Not used Not used Not used

P103-16 RF Remote Control Unit AXD7580 AXD7580 AXD7580 Not used Not used
P103-17 Remote Control Unit Not used Not used Not used AXD7592 AXD7592
F P103-18 RF Receiver Box AXX7272 AXX7272 AXX7272 Not used Not used
P103-19 Battery Cover AZN8049 AZN8049 AZN8049 Not used Not used
P103-20 Battery Door Not used Not used Not used AZN8047 AZN8047

2 SC-LX83
1 2 3 4
5 6 7 8

SC-37 SC-LX83 SC-LX83 SC-LX73 SC-LX73
Mark No. Symbol and Description Remarks
/UXJCB /FXJ /DLPWXJ /FXJ /DLPWXJ
NSP P103-22 Dry Cell Battery (LR6) VEM1047 VEM1053 VEM1053 Not used Not used
NSP P103-23 Dry Cell Battery (R3) Not used Not used Not used VEM1051 VEM1051
A
Caution 220-230V Not used Not used ARR7023 Not used ARR7023
Caution Card SD SB Not used Not used ARM7063 Not used ARM7063
NSP Compliance Label Not used Not used AAX8218 Not used Not used

EXTERIOR SECTION
> P105-8 Power Transformer (T1501) ATS7430 ATS7433 ATS7431 ATS7433 ATS7431
> P105-9 Fuse (FU13, FU14 : 1 A) REK1142 Not used Not used Not used Not used
> P105-9 Fuse (FU13, FU14 : T 800 mA) Not used AEK7072 AEK7072 AEK7072 AEK7072
> P105-10 Fuse (FU11, FU12, FU15 : 1.25A) REK1143 Not used Not used Not used Not used
> P105-10 Fuse (FU11, FU12, FU15 : T 1 A) Not used AEK7073 AEK7073 AEK7073 AEK7073

> P105-11 Fuse (FU61, FU62 : 10 A) REK1154 Not used Not used Not used Not used
> P105-11 Fuse (FU61, FU62 : 10 A) Not used VEK1029 VEK1029 VEK1029 VEK1029 B
P105-21 Insulator AMR7198 Not used Not used Not used Not used
P105-21 Insulator Assembly Not used DXA1904 DXA1904 DXA1904 DXA1904

REAR SECTION
P107-16 FM/AM Tuner Unit AXX7267 AXX7268 AXX7268 AXX7268 AXX7268
P107-24 Rear Panel ANC8568 ANC8572 ANC8573 ANC8579 ANC8580

CHASSIS SECTION
> P109-9 Fuse (FU4 : 2 A) REK1139 REK1139 Not used REK1139 Not used
> P109-9 Fuse (FU4 : 4 A) Not used Not used REK1104 Not used REK1104
> P109-10 Fuse (FU21, FU22, FU31, FU32 REK1143 Not used Not used Not used Not used
: 1.25 A) C
> P109-10 Fuse (FU21, FU22, FU31, FU32 Not used AEK7072 AEK7072 AEK7072 AEK7072
: T 800 mA)
> P109-11 Fuse (FU51, FU52 : 1.6 A) REK1144 Not used Not used Not used Not used

> P109-11 Fuse (FU51 : T 1.25 A) Not used AEK7074 AEK7074 AEK7074 AEK7074
> P109-12 Fuse (FU1 : 10 A) VEK1029 Not used Not used Not used Not used
> P109-12 Fuse (FU1 : 10 A) Not used DEK1045 Not used DEK1045 Not used
> P109-12 Fuse (FU1 : T5 A) Not used Not used AEK1061 Not used AEK1061

FRONT SECTION
P111-13 Filter AAK8443 AAK8459 AAK8459 AAK8459 AAK8459
P111-14 Display Panel AAK8488 AAK8492 AAK8492 AAK8492 AAK8492
D
P111-15 Power Ring AAK8507 AAK8477 AAK8477 AAK8477 AAK8477
P111-16 Door Sheet AAK8535 AAK8536 AAK8536 AAK8536 AAK8536
P111-24 Front Panel ANB7531 ANB7532 ANB7532 ANB7536 ANB7536

P111-25 Door Panel ANB7538 ANB7539 ANB7539 ANB7539 ANB7539
P111-28 P Base ASSY AZN8040 AZN8041 AZN8041 AZN8041 AZN8041
P111-29 Pioneer Badge VAM1159 VAM1158 VAM1158 VAM1158 VAM1158
P111-30 STDBY BTN ASSY XAD3216 AAD7773 AAD7773 AAD7773 AAD7773
Notes : For PCB ASSEMBLIES, Refer to "CONTRAST OF PCB ASSEMBLIES" and "2. SCHEMATIC DIAGRAM".

CONTRAST OF PCB ASSEMBLIES

A
E
F AUDIO ASSY
AWX9647 and AWX9735 are constructed the same except for the following:
Mark Symbol and Description AWX9647 AWX9735 Remarks
R2707, R2708 RS1/10SR331J RS1/10SR562J
R2709, R2710 RS1/10SR562J RS1/10SR331J
C2673-C2676 CKSRYB122K50 CCSRCH122J50
C2681, C2682, C3905 CKSRYB104K16 CKSRYB104K50
C2691, C2692 CCSRCH331J50 CCSRCH101J50

C2852, C2853 Not used CCSRCH101J50
C3051, C3052 CCSRCH102J50 CCSRCH331J50 F
C3167 Not used CCSRCH100D50
The mounting positions of the additional parts are described in the circuit diagram and PCB diagram of the parent manual.

SC-LX83 3
5 6 7 8
1 2 3 4

B F DAC HIGH ASSY
AWX9622 and AWX9711 are constructed the same except for the following:
A Mark Symbol and Description AWX9622 AWX9711 Remarks
D2130 1SS302 Not used
JA2101 Socket BKP1127 Not used
R2133, R2134, R2144, R2145 Not used RS1/10SR0R0J
R2231-R2233 Not used RS1/10SR0R0J
R2135 RS1/10SR0R0J Not used

R2142, R2143 RS1/10SR331J Not used
R2140, R2141 RS1/10SR474J Not used
R2492 RS1/8SQ105J RS1/8SQ474J
C2124, C2126 CKSRYB103K50 Not used
C2006, C2010-C2015, C2122 CKSRYB104K16 CKSRYB104K50
B
C2446, C2480 CKSRYB104K16 CKSRYB104K50
C2020, C2023, C2027, C2028 CKSSYB104K10 CKSSYB104K16
C2033, C2047, C2106, C2176 CKSSYB104K10 CKSSYB104K16
C2183, C2429, C2482 CKSSYB104K10 CKSSYB104K16
C2127, C2128 CEAT220M50 Not used

C F DAC LOW ASSY
AWX9658 and AWX9659 are constructed the same except for the following:
Mark Symbol and Description AWX9658 AWX9659 Remarks
C D2130 1SS302 Not used
JA2101 Socket BKP1127 Not used
R2130-R2134, R2144, R2145 Not used RS1/10SR0R0J
R2135 RS1/10SR0R0J Not used
R2140, R2141 RS1/10SR474J Not used

R2142, R2143 RS1/10SR331J Not used
C2124, C2126 CKSRYB103K50 Not used
C2127, C2128 CEAK220M50 Not used

F F DIGITAL MAIN ASSY
D AWX9620 and AWX9627 are constructed the same except for the following:
Mark Symbol and Description AWX9620 AWX9627 Remarks
IC1809 TC74VHC157FK Not used
IC1801 AAT4614AIGU-2 Not used
IC1806 TC74VHC125FK Not used
IC1808 TC74LCX157FK Not used
IC1816 NJM2872BF33 Not used

IC1803 BU9450KV Not used
D602, D604 1SS352 Not used
D1801, D1802 HZU5R6(B2) Not used
L1801, L1802, L1806, L1808 QTL1013 Not used
E
L1811 Chip Solid Inductor QTL1013 Not used

X1801 Crystal ASS7095 Not used
JA1801 4p Socket AKP7201 Not used
R1805 Not used RS1/10SR0R0J
R1856, R1857, R1859, R1860 Not used RS1/16SS0R0J
R1907, R1909, R1910 Not used RS1/16SS0R0J

R724, R725, R738 Not used RS1/16SS101J
R1823, R1828 RS1/10SR101J Not used
R1814 RS1/10SR104J Not used
R1818 RS1/16SS0R0J Not used
F
R739, R1806, R1807, R1819 RS1/16SS101J Not used

R1820, R1824-R1827, R1829 RS1/16SS101J Not used
R1843, R1863, R1864, R1866 RS1/16SS101J Not used
4 SC-LX83
1 2 3 4
5 6 7 8

Mark Symbol and Description AWX9620 AWX9627 Remarks
R1867, R1869-R1874 RS1/16SS101J Not used
R1901, R1902 RS1/16SS101J Not used
R1808, R1809, R1812 RS1/16SS102J Not used
A

R1905, R1906 RS1/16SS102J Not used
R1801 RS1/16SS103J Not used
R1817, R1821, R1822, R1831 RS1/16SS104J Not used
R1832, R1834, R1835 RS1/16SS104J Not used
R1813 RS1/16SS105J Not used

R1868, R1892 RS1/16SS151J Not used
R1846, R1847, R1865 RS1/16SS470J Not used
R1830 RS1/16SS473J Not used
R1891 RS1/16SS680J Not used
R1833 RAB4CQ470J Not used
B

C1855 CCSSCH100D50 Not used
C1014 CCSSCH101J50 CCSSCH100D50
C1802, C1812 CCSSCH101J50 Not used
C173 CCSSCH102J50 CCSSCH100D50
C9037, C9038 CCSSCH471J50 CCSSCH330J50

C1826, C1833, C1835 CCSSCH471J50 Not used
C1810, C1811 CCSSCH8R0D50 Not used
C1807 CEVLW101M10 Not used
C1803, C1844 CEVW101M16 Not used
C9807, C9808 CKSQYB104K25 CKSQYB104K50
C
C1854 CKSQYB225K10 Not used
C9817, C9823, C9850 CKSRYB104K16 CKSRYB104K50
C1804 CKSRYB104K16 Not used
C1801 CKSRYB105K10 Not used
C632, C661, C937, C946 CKSSYB104K10 CKSSYB104K16

C969, C976, C1296, C1341 CKSSYB104K10 CKSSYB104K16
C1362, C1367-C1370, C1385 CKSSYB104K10 CKSSYB104K16
C9043, C9066, C9083, C9095 CKSSYB104K10 CKSSYB104K16
C9099, C9108