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BEFORE SERVICING THIS UNIT

SAFETY PRECAUTIONS

NOTE FOR SCHEMATIC DIAGRAM

HANDLING THE SEMICONDUCTOR AND OPTICS

ONLINE PARTS LIST

Accessing the Parts List

Searching Part Numbers or Ref. Numbers

NOTE FOR PARTS LIST

SERIAL NUMBER

Serial Number Organization

SKU Code of this Unit

POST-SERVICE PRECAUTIONS

Initializing this Unit AVR-X1500H

JIG FOR SERVICING

Initializing this Unit AVR-S740H

JIG FOR SERVICING

Before Servicing

This Unit

Electrical Mechanical Repair Information Updating

AVR-X1500H1
AVR-S740H1
SAFETY PRECAUTIONS3
- NOTE FOR SCHEMATIC DIAGRAM4
- HANDLING THE SEMICONDUCTOR AND OPTICS4
- ONLINE PARTS LIST5
- SERIAL NUMBER6
  - Serial Number Organization6
  - SKU Code of this Unit6
- POST-SERVICE PRECAUTIONS7
SCHEMATIC DIAGRAMS9
- SCH01_HDMI_RX9
- SCH02_HDMI_TX10
- SCH03_OSD11
- SCH04_DIGITAL SUPPLY12
- SCH05_MCU13
- SCH06_MCU_LEVEL_CHG14
- SCH07_DIR15
- SCH08_PLD16
- SCH09_DSP17
- SCH10_MAIN DAC18
- SCH11_NETWORK19
- SCH12_ANALOG20
- SCH13_MAIN21
- SCH14_FRONT_HDMI22
- SCH15_DIFF-AMP23
- SCH16_PHONO & TUNER24
- SCH17_FRONT25
- SCH18_REGULATOR26
- SCH19_SMPS27
PRINTED CIRCUIT BOARDS28
- DIGITAL, F HDMI, TUNER, PHONE28
- MAIN29
- DIFF-AMP, BIAS-TR, PHONE WIRE GUIDE, HDMI CABLE GUIDE, SMPS, REGULATOR30
- FRONT, PHONE, USB WIRE GUIDE, STANDBY, MIC, USB31
LEVEL DIAGRAM32
- FRONT ch32
- CENTER, SURROUND ch33
- SURROUND BACK ch34
- SUBWOOFER ch35
- ZONE2 ch36
BLOCK DIAGRAM37
- ANALOG AUDIO DIAGRAM37
- DIGITAL AUDIO DIAGRAM38
- VIDEO DIAGRAM39
POWER DIAGRAM40
WIRING DIAGRAM41
SEMICONDUCTORS42
- 1. IC's42
- 2. FL DISPLAY57
- 3. Remote Code Table58
DISASSEMBLY65
- Flowchart65
- 1. FRONT PANEL ASSY66
- 2. DIGITAL PCB67
- 3. RADIATOR ASSY67
- 4. SMPS PCB67
- 5. REGULATOR PCB67
- 6. POWER TRANS67
EXPLODED VIEW68
PACKAGING VIEW69
TROUBLE SHOOTING71
- 1. POWER71
- 2. Analog video72
- 3. HDMI/DVI73
- 4. AUDIO75
- 5. Network / Bluetooth / USB77
- 6. SMPS80
HDMI "Rx/Tx" Failure Detection81
- 1. Prior checking81
- 2. Preparations for checking HDMI Switcher reception/transmission register82
- 3. Starting detecting the point of failure84
- 4. Device implementation location111
CLOCK FLOW & WAVE FORM IN DIGITAL BLOCK112
SPECIAL MODE113
- Special mode setting button AVR-X1500H113
- Special mode setting button AVR-S740H114
- 1. Version Display Mode115
- 2. PANEL / REMOTE LOCK Selection Mode118
- 3-1. Selecting the Mode for Service-related119
- 3-2. Protection History Display Mode120
- 3-3. Operation Info Mode122
- 3-4. TUNER STEP mode (E2 / E3 only)123
- 3-5. Remote ID Setup Mode123
- 4. Protection Pass Mode124
- 5. Network Initialization Mode124
- 6. Clearing the Operation Info125
- 7. Log Capture feature125
DIAGNOSTIC MODE126
- Service Path Check Mode126
- DIAGNOSTIC PATH DIAGRAM129
JIG FOR SERVICING144
ADJUSTMENT145
PROCEDURE AFTER REPLACING THE PCB.147
PROCEDURE AFTER REPLACING THE U-COM, ETC.147
FIRMWARE UPDATE PROCEDURE148
- 1. Items necessary for update148
- 2. Update preparation with a USB flash drive149
- 3. Update method when the DIGITAL PCB or network module is replaced (Using a USB flash drive)150
- 4. Update Method for Service Region Settings151
- 5. Normal Firmware Update Method from USB Flash Drive152
- 6. Normal Firmware Update Method from OTA153
- 7. About the error codes154

Brand	Denon
Model	AVR-S740H
Category	Stereo Receiver
Language	English

Denon AVR-S740H Service Manual

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