Name: Pioneer SC-LX75
Brand: Pioneer
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SC-57

2 3 4

10.3 AUDIO ASSY (3/3)

3/3

Safety Information11
Table of Contents12
Service Precautions14
Notes on Soldering14
Notes on Replacing14
Caution14
Notes on Assembling15
Specifications16
Sc-57/Sc-55 Specifications16
Sc-1526-K Specifications18
Basic Items for Service20
Check Points after Servicing20
Pcb Locations21
Jigs List23
Block Diagram25
Overall Wiring Diagram25
Block Diagram for Audio Block27
Block Diagram for Digital Main Video Block29
Block Diagram for Digital Main Audio Block31
Block Diagram for Video Block33
Block Diagram for Composite Video Block34
Block Diagram for Component Video Block35
Block Diagram for Power Block(1)37
Block Diagram for Power Block(2)39
Diagnosis41
Diagnosis Flowchart41
Circuit Description51
Service Mode58
Test Mode58
Disassembly60
Each Setting and Adjustment81
Adjustment Required When the Unit Is Repaired or Replaced81
How to Save and Load the Setting Using Backup Function with Usb Memory82
Region Writing83
How to Update Firmware84
Exploded Views and Parts List87
Packing Section87
Exterior Section89
Rear Section91
Chassis Section93
Front Section95
Schematic Diagram97
Audio Assy(1/3)(Guide Page)97
Audio Assy (2/3)103
Audio Assy (3/3)105
Dac High Assy (1/2)107
Dac High Assy (2/2)109
Front Hdmi Usb Assy111
USB RECT and MULTI CH in(SC-57) ASSYS113
Digital Main Assy (1/11) (Guide Page)115
Digital Main Assy (2/11)121
Digital Main Assy (3/11)123
Digital Main Assy (4/11)125
Digital Main Assy (5/11)127
Digital Main Assy (6/11)129
Digital Main Assy (7/11)131
Digital Main Assy (8/11)133
Digital Main Assy (9/11)135
Digital Main Assy (10/11)137
Digital Main Assy (11/11)139
Interface Assy141
Component Assy143
Composite Assy145
MIC Hp Assy147
Display Assy149
VOL and POWER SW ASSYS151
Encoder Assy152
Ir Buffer Assy153
BUFFER GND and IR INTERFACE ASSYS155
Ir Power Amp Assy (1/6)157
Ir Power Amp Assy (2/6)159
Ir Power Amp Assy (3/6)161
Ir Power Amp Assy (4/6)163
Ir Power Amp Assy (5/6)165
Ir Power Amp Assy (6/6)167
PRIMARY and PRIMARY SHIELD ASSYS169
Reg Assy171
Ir Reg Assy173
B Diode Assy175
Connect Assy176
Fb-Connect Assy177
PRE BRIDGE and A-DAC BRIDGE ASSYS178
D-AUDIO BRIDGE and D-DAC BRIDGE ASSYS179
Front Bridge Assy180
Display Bridge Assy181
F-In Bridge Assy182
Mch Bridge Assy(Sc-57)183
Vreg Guard Assys184
Pcb Connection Diagram185
Audio Assy185
Dac High Assy189
FRONT HDMI USB, USB RECT and MULTI CH in(SC-57) ASSYS193
Digital Main Assy197
Interface Assy201
Component Assy205
Composite Assy209
MIC HP and DISPLAY ASSYS211
VOL, POWER SW and ENCODER ASSYS215
Ir Buffer Assy217
BUFFER GND and IR INTERFACE ASSYS219
Ir Power Amp Assy221
Primary Assy225
PRIMARY SHIELD and REG ASSYS229
Ir Reg Assy233
B Diode Assy235
Connect Assy237
FB-CONNECT and PRE BRIDGE ASSYS239
A-Dac/D-Audio/D-Dac/Front Bridge Assys241
DISPLAY BRIDGE and F-IN BRIDGE ASSYS245
MCH BRIDGE, a REG BRIDGE and MIC HP GUARD ASSYS249
FAN CONNECT, BIND DM/BIND B CABLE, FFC GUARD2 and VREG GUARD ASSYS253
Pcb Parts List255

Brand	Pioneer
Model	SC-LX75
Category	Receiver
Language	English

Pioneer SC-LX75 Service Manual

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