Yamaha HTR-5920 Service Manual

DIGITAL HOME THEATER SYSTEM YHT-170

AV RECEIVER

HTR-5920

SERVICE MANUAL

YHT-170 consists of the HTR-5920 and the NS-P170.
This service manual is for the HTR-5920.
For the NS-P170 service manual, please refer to the following publication number:

NS-P170 101002

HTR-5920

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 PANEL .............................................................. 2

REAR PANEL ................................................................ 3

REMOTE CONTROL PANEL ........................................ 3

SPECIFICATIONS...................................................... 4–6

INTERNAL VIEW ........................................................... 6

DISASSEMBLY PROCEDURES ............................... 7–9

MAINTENANCE FLOW CHART ............................ 10–17

IMPORTANT NOTICE

DISPLAY DATA ..................................................... 18–19

IC DATA ................................................................. 20–22

PIN CONNECTION DIAGRAMS ............................ 23–24

BLOCK DIAGRAM ....................................................... 25

PRINTED CIRCUIT BOARDS................................ 26–30

SCHEMATIC DIAGRAMS ...................................... 31–34

REPLACEMENT PARTS LIST .............................. 35–37

REMOTE CONTROL.................................................... 38

101001

2006 All rights reserved.

This manual is copyrighted by YAMAHA and may not be copied or

redistributed either in print or electronically without permission.

P.O.Box 1, Hamamatsu, Japan

'06.03

HTR-5920

HTR-5920

■ TO SERVICE PERSONNEL

1. Critical Components Information

Components having special characteristics are marked s and

must be replaced with parts having specifications equal to those

originally installed.

2. Leakage Current Measurement (For 120V Models Only)

When service has been completed, it is imperative to verify

that all exposed conductive surfaces are properly insulated

from supply circuits.

● Meter impedance should be equivalent to 1500 ohms shunted

by 0.15µF.

WARNING: CHEMICAL CONTENT NOTICE!

The solder used in the production of this product contains LEAD. In addition, other electrical/electronic and/or plastic (where
applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and
possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REA­SON WHATSOEVER!

WALL

OUTLET

● Leakage current must not exceed 0.5mA.

● Be sure to test for leakage with the AC plug in both polarities.

EQUIPMENT

UNDER TEST

INSULATING

TABLE

AC LEAKAGE

TESTER OR

EQUIVALENT

Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose
eyes to solder/flux vapor!

If you come in contact with solder or components located inside the enclosure of this product, wash your hands before
handling food.

■ FRONT PANEL

U, C models

2

■ REAR PANEL

U, C models

HTR-5920

HTR-5920

■ REMOTE CONTROL PANEL

3

HTR-5920

HTR-5920

■ SPECIFICATIONS

■ Audio Section

Minimum RMS Output Power Per Channel for FRONT,
CENTER and SURROUND

1 kHz, 0.1 % THD, 6 ohms ................................... 80 W

1 kHz, 10 % THD, 6 ohms .................................. 110 W

Frequency Response

CD, etc. to FRONT L/R ........... 10 Hz to 100 kHz, -3 dB

Total Harmonic Distortion

1 kHz, CD, etc. to FRONT L/R ............................. 0.1 %

Signal to Noise Ratio (IHF-A network)

CD, etc. to FRONT L/R, effect off ........................ 99 dB

Residual Noise (IHF-A network)

............................................................................ 150 µV

Channel Separation (1 kHz / 10 kHz)

CD, etc. (5.1 k-ohms terminated) to FRONT L/R

Tone Control Characteristics (FRONT L/R)

BASS

Boost/cut ........................................... ±10 dB (100 Hz)

TREBLE

Boost/cut ........................................... ±10 dB (10 kHz)

Phones Output

.......................................................... 400 mV/470 ohms

Input Sensitivity / Input Impedance

CD, etc . .......................................... 200 mV/47 k-ohms

Output Level / Output Impedance

REC OUT ...................................... 200 mV/1.2 k-ohms

■ Video Section

Video Signal Type

..............................................................................NTSC

Component Signal Level

.............................................................. 1 Vp-p/75 ohms

Signal to Noise Ratio

Frequency Response (Monitor out)

Composite .................................. 5 Hz to 10 MHz, -3 dB

Component ................................. 5 Hz to 60 MHz, -3 dB

................................................... 60 dB/45 dB or more

............................................................. 50 dB or more

Standby Power Consumption

U, C models ............................................................. 1 W

Dimensions (W x H x D)

......

435 x 151 x 303 mm (17-1/8" x 5-15/16" x 11-15/16")

Weight

.................................................... 8.0 kg (17 lbs. 10 oz.)

Finish

Silver color ................................................. U, C models

Accessories

Remote control x 1, Batteries (Size "AA", R06, UM-3) x
2, AM loop antenna x 1, Indoor FM antenna x 1

* Specifications are subject to change without notice due

to product improvements.

U ........ U.S.A. model C .... Canada model

Manufactured under license from Dolby Laboratories.
“Dolby”, “Pro Logic”, and the double-D symbol are

trademarks of Dolby Laboratories.

“DTS”, and “DTS Digital Surround” are registered
trademarks of Digital Theater Systems, Inc.

• DIMENSIONS

12

(1/2")

■ FM Section

Tuning Range

.......................................................... 87.5 to 107.9 MHz

50dB Quieting Sensitivity (IHF, 100% mod.)

Mono .................................................................... 30 dBf

Signal to Noise Ratio (IHF)

Mono/stereo .............................................. 73 dB/70 dB

Harmonic Distortion

(1 kHz)

Mono/stereo ............................................... 0.5 %/0.8 %

Antenna Input

......................................................75 ohms unbalanced

■ AM Section

Tuning Range

............................................................ 530 to 1,710 kHz

Antenna

................................................................. Loop antenna

■ General

Power Supply

U, C models ........................................ AC 120 V, 60 Hz

Power Consumption

U, C models ............................................ 220 W/240 VA

4

435 (17-1/8")

mm (inch)Unit :

270 (10-5/8")

303 (11-15/16")

21

(13/16")

130 (5-1/8")

151 (5-15/16")

21

(13/16")

• SET MENU TABLE

MAIN MENU SELECT MENU VALUE [INITIAL]

1

SPEAKER LEVEL

2

SPEAKER SET

3

SPEAKER DISTANCE

4

DIMMER

FRONT L

CENTER

FRONT R

SURROUND R

SURROUND L

SUBWOOFER

FRONT

CENTER

SURROUND

SUBWOOFER

FRONT

CENTER

SURROUND

-10 dB to +10 dB, [0 dB], 1 dB step

LRG, [SML], NONE

[YES], NONE

1 ft to 30 ft, [10 ft], 1 ft step

-2, -1, [0]

HTR-5920

HTR-5920

• SURROUND MODE

MAIN MENU SELECT MENU VALUE [INITIAL]

PLII MUSIC

• RESETTING THE SYSTEM

Use this feature to reset all the parameters of this unit to the initial factory settings.

Note:

• Be sure this unit is in standby mode.

• This procedure completely resets all the parameters of this unit.

• The initial factory settings are activated next time you turn on this unit.

1. With this unit in standby mode, hold down TONE CONTROL key on the front panel and press STANDBY/ON key.
"RESET > NO" appears in the front panel display.

Note: To cancel the initialization procedure without making any changes, press STANDBY/ON key.

2. Press TONE CONTROL key to select "RESET > YES".

PANORAMA

DIMENSION

CT WIDTH

ON, [OFF]

-3 to 3, [STD], 1 step

0 to 7, [3], 1 step

3. Press STANDBY/ON key to confirm your selection and set this unit to the standby mode.

5

HTR-5920

HTR-5920

• FIRMWARE VERSION (Microprocessor information)

To display the firmware version, do the following procedure.

1. Press the "STANDBY/ON" key while simultaneously pressing those two keys of the main unit as indicated in the
figure below.

2.

3. Press "STANDBY/ON" key.

Keys of main unit

Turn on the power while pressing these keys.

060105-01

* Numeric values in the figure example are for reference.

■ INTERNAL VIEW

1

254 63

7

8

9

1

AMP (2) P.C.B.

2

AMP (3) P.C.B.

3

POWER TRANSFORMER

4

AMP (7) P.C.B.

5

AMP (1) P.C.B.

6

INPUT P.C.B.

7

AMP (4) P.C.B.

8

AMP (5) P.C.B.

9

AMP (6) P.C.B.

0

FRONT (3) P.C.B.

A

FRONT (2) P.C.B.

B

FRONT (1) P.C.B.

0BA

6

■ DISASSEMBLY PROCEDURES

(Remove parts in the order as numbered.)
Disconnect the power cable from the AC outlet.

HTR-5920

HTR-5920

1. Removal of Top Cover

a. Remove 6 screws (1) and 7 screws (2) (Fig. 1)
b. Slide the Top Cover rearward to remove it. (Fig. 1)

Top Cover

1

Ground lead

CN83

3

3

2. Removal of Front Panel Unit

a. Remove CN11, CN83, CN96. (Fig. 1)
b. Remove 5 screws (3) and 5 screws (4). (Fig. 1)
c. Release a hook on the right side of the Front Panel

Unit, then remove the Front Panel Unit forward. (Fig. 1)

2

CN96

CN11

1

4

Front Panel Unit

Ground lead

3

Fig. 1

7

HTR-5920

HTR-5920

a. Remove CN12. (Fig. 2)
b. Remove 2 screws (5). (Fig. 3)
c. Remove Tuner. (Fig. 2)
d. Remove 15 screws (6). (Fig. 3)
e. Remove 2 screws (7). (Fig. 3)
f. Remove 6 screws (8). (Fig. 4)
g. Remove Cord Stopper. (Fig. 2)
h. Remove Rear Panel. (Fig. 2)

3. Removal of Rear Panel and Tuner

Rear PanelCord Stopper

CN12

Fig. 2

5 67 7

TUNER

Fig. 3

8

Fig. 4

8

4. Removal of INPUT and AMP (4) P.C.B.s

a. Remove 1 screw (9) and 2 screws (0). (Fig. 5)
b. Remove INPUT and AMP (4) P.C.B.s. (Fig. 5)

0

INPUT P.C.B.

AMP (4) P.C.B.

Note:
When assembling the AMP (4) P.C.B., be careful not to

bend the pin of the connectors (CN13 and CN14).

HTR-5920

HTR-5920

9

5. Removal of AMP (1) P.C.B.

a. Remove 2 screw (A) 5 screws (B) and 3 screw (C).

(Fig. 6)
b. Remove CN90, CN91, CN93 and CN95. (Fig. 6)
c. Remove AMP (1) P.C.B. with Heat Sink.

CN93 CN91 CN90

Note:
When assembling the AMP (4) P.C.B., be careful not to

bend the pin of the connectors (BN92 and BN94).

Fig. 5

A

AMP (1) P.C.B.

B

CN95

B

Heat Sink

C

Fig. 6

9

HTR-5920

HTR-5920

■ MAINTENANCE FLOW CHART

• FRONT P.C.B.

Start

Power on

Is FL display

turns on?

YES YES

NO

Is connection

of cable
correct?

Are voltages

of BN82 (pin 1

to 4) correct?

NO

NO

Check connection
of cable

Check power supply
of BN82

FRONT P.C.B. 1/3

Are all keys

on front panel

work well?

YES

NO

YES

Are waveforms

of IC81 (pin 34 to 67)

correct?

YES

Check and replace

FL display

Is power voltage

of each board

correct?

YES

Are input ports

of IC81 (pin76 to 78)

work correct?

NO

NO

NO

Check and replace
IC81

Check
power supply part

Check KEY IN part
(S851-854, S858-863,
S865-871)

10

YES

A

Check and replace IC81

HTR-5920

A

HTR-5920

FRONT P.C.B. 2/3

Is volume

work well?

YES YES

NO

Is power voltage

of each board

correct?

Is implementation

of VR82
correct?

YES

Are inputs of

IC81 (pin 71 and 72)

correct?

YES

Check and replace IC81

NO

NO

NO

Check
power supply part

Check and replace
VR82

Check circuit pattern

Is output of

Phones

correct?

B

NO

Is power voltage

of each board

correct?

YES YES

Are connections

of CN96 and BN73-2

correct?

YES

Check and replace JK81

NO

NO

Check
power supply part

Check connection
of cable

11

HTR-5920

HTR-5920

B

FRONT P.C.B. 3/3

Is work

of remote control?

YES YES

FRONT P.C.B. is O.K.

NO

Is power voltage

of each board

correct?

Is power voltage

of RC81 correct?

YES

Is waveform

of RC81
correct?

YES

Check and replace IC81

NO

NO

NO

Check
power supply part

Check
power supply part

Check and replace
RC81

12