
1 Note 3
1.1. System Combination Breakdown 3
2 Safety Precautions 4
2.1. GENERAL GUIDELINES 4
2.2. Before Repair and Adjustment (Digital Receiver SB-FX85)
4
2.3. Protection Circuitry 5
2.4. Safety Part Information 5
3 Prevention of Electro Static Discharge (ESD) to
Electrostatically Sensitive (ES) Devices 6
4 Handling the Lead-free Solder 7
4.1. Service caution based on legal restrictions 7
5 Accessories 8
6 Using of Digital Receiver Unit 9
6.1. Connecting the digital transmitter (SH-FX85T) 9
6.2. AC Power Cord connection (SB-FX85) 9
6.3. Making the wireless link (SB-FX85) 9
7 Operation Procedures 10
7.1. Remote Control Key Buttons Operations (SA-PT650P/PC-
S) 10
7.2. Main Unit Key Buttons Operations (SA-PT650P/PC-S) 11
7.3. Digital Receiver Operations (SB-FX85) 11
7.4. Digital Receiver Operations as stand-alone audio amplifier
(SB-FX85) 12
8 New Features 13
8.1. Wireless Features 13
9 Self-Diagnosis and Special Mode Setting 20
9.1. Wireless Service Mode Summary Table 20
9.2. Service Mode Table (Wireless) 21
10 Assembling and Disassembling 23
10.1. Note 23
10.2. Disassembly flow chart (For SB-FX85) 24
10.3. Main Parts Location Diagram 24
10.4. Disassembly of Digital Receiver (SB-FX85P/PC) 25
10.5. Disassembly of Transmitter Module P.C.B (SH-FX85T) 37
11 Service Positions 38
11.1. Checking of Panel, RF Adapter, and Receiver Module
P.C.B. 38
11.2. Checking of D-Amp, and D-Port P.C.B. 39
12 Voltage Measurement & Waveform Chart 40
12.1. Voltage Measurement 40
12.2. Waveform Chart 42
13 Wiring Connection Diagram 43
14 Block Diagram 45
14.1. DIGITAL AMPLIFIER/D PORT/PANEL BLOCK DIAGRAM
45
14.2. RECEIVER MODULE BLOCK DIAGRAM 46
14.3. TRANSMITTER MODULE BLOCK DIAGRAM 47
15 Notes of Schematic Diagram 49
16 Schematic Diagram 51
16.1. D-AMP CIRCUIT 51
16.2. PANEL CIRCUIT 53
16.3. D-PORT CIRCUIT and RF ADAPTER CIRCUIT 54
16.4. RECEIVER MODULE CIRCUIT 55
16.5. TRANSMITTER MODULE CIRCUIT 59
17 Printed Circuit Board Diagram 63
17.1. D-AMP P.C.B. , RECEIVER MODULE P.C.B. 63
17.2. PANEL P.C.B. , D-PORT P.C.B. , RF ADAPTER P.C.B.
64
17.3. TRANSMITTER MODULE P.C.B 65
18 Illustration of IC's, Transistors and Diodes 67
19 Terminal Functions of Integrated Circuits 68
19.1. IC10 (C1AB00002772): IC BASE BAND 68
19.2. IC13 (C1CB00002648): IC RF 68
19.3. IC1000 (C2BBYY000375): IC MCU 69
20 Exploded Views 71
20.1. Cabinet Parts Location 71
20.2. Packaging 72
21 Service Hint 73
21.1. TX / RX KIT ASSEMBLY 73
21.2. TX CASE ASSEMBLY 73
22 Replacement Parts List 74
22.1. Part List (SB-FX85) 74
22.2. Part List (SH-FX85) 78
CONTENTS
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SH-FX85P / SH-FX85PC