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Denon AVR-1621 - User Manual

Denon AVR-1621
144 pages
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D&M Holdings Inc.
SERVICE MANUAL
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MODEL JP E3 E2 EK EA E1 E1K E1C
AVR-1611
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33 3
AVR-1621
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3
AVR-591
33
AV SURROUND RECEIVER
Ver. 3
•
Some illustrations using in this service manual are slightly different from the actual set.
•
Please use this service manual with referring to the operating instructions without fail.
•
For purposes of improvement, speci cations and design are subject to change without notice.
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Please refer to the
MODIFICATION NOTICE.

Table of Contents

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Denon AVR-1621 Specifications

General IconGeneral
Channels5.1
Total Harmonic Distortion0.08%
Frequency Response10 Hz - 100 kHz
Input Sensitivity/Impedance200 mV / 47 kOhms
Signal-to-Noise Ratio98 dB
HDMI Inputs4
HDMI Outputs1
TypeAV Receiver
3D SupportYes
Audio Return Channel (ARC)Yes
Dolby DigitalYes
DTSYes
Tuner SectionAM/FM
Audio Outputs1
Dimensions (W x H x D)434 x 151 x 339 mm
Power Output (8 ohms)75 W (8 ohms, 20 Hz - 20 kHz, 0.08 % THD, 2 channels driven)

Summary

SAFETY PRECAUTIONS

LEAKAGE CURRENT CHECK

Procedure for checking leakage current before returning the unit to the customer.

CAUTIONS DURING SERVICING AND INSPECTION

Heeding labels, electric shock, disassembly, designated parts, wiring, and post-service checks.

TECHNICAL SPECIFICATIONS

AUDIO SECTION SPECIFICATIONS

Details on power amplifier output, input sensitivity, frequency response, and S/N ratio.

SERVICING CAUTIONS AND PROCEDURES

INITIALIZING AV SURROUND RECEIVER

Procedure for initializing the receiver, typically after replacing internal components.

SERVICE JIGS

Details on the extension unit kit and writing kit for repair and firmware updates.

DISASSEMBLY

FRONT PANEL ASSEMBLY DISASSEMBLY

Steps for removing screws and disconnecting cables for the front panel assembly.

RADIATOR ASSEMBLY DISASSEMBLY

Steps for removing screws to access the radiator assembly.

HDMI UNIT ASSEMBLY DISASSEMBLY

Steps for disconnecting cables, removing screws, and cutting wire bands for the HDMI unit.

PCB REG CNT;PCB REG DISASSEMBLY

Steps for removing screws and disconnecting wires for the PCB REG CNT and PCB REG.

TRANS MAIN DISASSEMBLY

Steps for disconnecting connector wires and removing screws for the main transformer unit.

PCB SPK;PCB SMPS DISASSEMBLY

Steps for removing screws and supporters for the PCB SPK/PCB SMPS.

SPECIAL OPERATIONAL MODES

ERROR CHECKING AND PROTECTION HISTORY DISPLAY

Displays the protection history of the unit with specific codes.

INITIALIZATION MODE

Carries out backup data initialization.

CLEARING PROTECTION HISTORY AND POWER LED WARNINGS

Two methods to clear history and power LED indications for protection events.

FIRMWARE VERSION UPGRADE

IDLING CURRENT ADJUSTMENT

IDLING CURRENT ADJUSTMENT PROCEDURE

Detailed steps for measuring and adjusting the idling current using a DC voltmeter.

TROUBLESHOOTING

POWER-ON ISSUES

Troubleshooting guide for power not turning on, including fuse checks and voltage checks.

BLOWN FUSE DIAGNOSIS

Steps to identify the cause of a blown fuse and subsequent repairs.

VIDEO SIGNAL TROUBLESHOOTING

HDMI;DVI NO PICTURE OR SOUND DIAGNOSIS

Step-by-step guide to diagnose and resolve no picture or sound output via HDMI/DVI.

AUDIO SYSTEM CHECKS AND TROUBLESHOOTING

AUDIO CHECK PROCEDURES

Steps to check analog and digital audio inputs and HDMI audio.

POWER AMPLIFIER TROUBLESHOOTING

Diagnosing and resolving issues with the power amplifier section.

EXPLODED VIEWS AND PART IDENTIFICATION

PARTS LISTS AND COMPONENT DETAILS

MICROPROCESSOR AND MEMORY IC DETAILS

HDMI AND AUDIO INTERFACE IC SCHEMATICS

DIGITAL SIGNAL PROCESSOR AND MEMORY SCHEMATICS

ADSP21367 KSWZ2 A DSP INFORMATION

Pinout and terminal functions for the ADSP21367KSWZ2A DSP IC.

AUDIO PROCESSOR AND VIDEO IC SCHEMATICS

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