Yamaha HTR-5840 Service Manual

131 pages

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SERVICE MANUAL

100941

IMPORTANT NOTICE

This manual has been provided for the use of authorized YAMAHA Retailers and their service personnel.

It has been assumed that basic service procedures inherent to the industry, and more specifically YAMAHA Products, are already

known and understood by the users, and have therefore not been restated.

WARNING: Failure to follow appropriate service and safety procedures when servicing this product may result in personal

injury, destruction of expensive components, and failure of the product to perform as specified. For these reasons,

we advise all YAMAHA product owners that any service required should be performed by an authorized

YAMAHA Retailer or the appointed service representative.

IMPORTANT: The presentation or sale of this manual to any individual or firm does not constitute authorization, certification or

recognition of any applicable technical capabilities, or establish a principle-agent relationship of any form.

The data provided is believed to be accurate and applicable to the unit(s) indicated on the cover. The research, engineering, and

service departments of YAMAHA are continually striving to improve YAMAHA products. Modifications are, therefore, inevitable

and specifications are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please

contact the distributor's Service Division.

WARNING: Static discharges can destroy expensive components. Discharge any static electricity your body may have

accumulated by grounding yourself to the ground buss in the unit (heavy gauge black wires connect to this buss).

IMPORTANT: Turn the unit OFF during disassembly and part replacement. Recheck all work before you apply power to the unit.

■ CONTENTS

TO SERVICE PERSONNEL .......................................... 2

FRONT PANELS ........................................................ 3~6

REAR PANELS ........................................................ 6~15

SPECIFICATIONS / 参考仕様 ................................ 16~18

INTERNAL VIEW ................................................... 18~19

REMOTE CONTROL PANELS .................................... 19

DISASSEMBLY PROCEDURES/分解手順 ......... 20~23

SELF DIAGNOSIS FUNCTION (DIAG)/

自己診断機能（ダイアグ）..................................... 24~44

AMP ADJUSTMENT/アンプ部調整 ........................... 45

IC DATA ................................................................. 46~51

BLOCK DIAGRAM ................................................. 52~55

DISPLAY DATA ........................................................... 56

PRINTED CIRCUIT BOARD .................................. 57~79

PIN CONNECTION DIAGRAM .................................... 80

SCHEMATIC DIAGRAM ........................................ 81~93

PARTS LIST ......................................................... 95~129

REMOTE CONTROL.......................................... 130~131

AV RECEIVER/AV AMPLIFIER

RX-V557/HTR-5850/DSP-AX557

RX-V457/HTR-5840/DSP-AX457

RX-V557/HTR-5850/DSP-AX557

RX-V457/HTR-5840/DSP-AX457

P.O.Box 1, Hamamatsu, Japan

'05.03

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Questions and Answers:

N
Natasha MosesSep 6, 2025
How to fix Yamaha HTR-5840 Receiver no picture?
- M
  matthew58Sep 6, 2025
  If there's no picture from your Yamaha Receiver, try turning on the video conversion function if the output and input for the picture are connected to different types of video jacks.
D
Darrell AverySep 7, 2025
What to do if Yamaha HTR-5840 desired station cannot be tuned in?
- M
  Morgan WhiteSep 8, 2025
  If you cannot tune in the desired station with the automatic tuning method on your Yamaha Receiver, try using a high-quality directional FM antenna if the signal is too weak. You can also use the manual tuning method.
K
Kimberly CarrollSep 9, 2025
How to fix Yamaha Receiver FM stereo reception noisy?
- B
  Bradley BrownSep 9, 2025
  If FM stereo reception is noisy on your Yamaha Receiver, check the antenna connections and consider using a high-quality directional FM antenna. The characteristics of FM stereo broadcasts may cause this problem when the transmitter is too far away or the antenna input is poor. Also, you can use the manual tuning method.
L
Lucas OrtizSep 12, 2025
Why Yamaha HTR-5840 suddenly turns into the standby mode?
- E
  Evelyn BurnsSep 12, 2025
  If your Yamaha Receiver suddenly turns into standby mode, wait about 1 hour for it to cool down. The internal temperature may have become too high, activating the overheat protection circuitry. Then, turn it back on.
C
Curtis CruzSep 12, 2025
Why Yamaha Receiver source cannot be recorded by a digital recording component?
- S
  Scott BrownSep 12, 2025
  If a source cannot be recorded by a digital recording component connected to the DIGITAL OUTPUT jack on your Yamaha Receiver, make sure the source component is connected to the unit’s DIGITAL INPUT jacks.