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34 TROUBLESHOOTING GUIDE

In the rare case where the unit’s operation or the
displays seem abnormal, the cause may involve
the erratic operation of the system’s memory or
microprocessor.

To correct this problem, first unplug the unit from
the AC wall outlet and wait at least three
minutes. After the pause, reconnect the AC
power cord and check the unit’s operation. If the
system still malfunctions, a system reset may
clear the problem.

To clear the AVR’s entire system memory
including tuner presets, output level settings,
delay times and speaker configuration data, first
put the unit in Standby by pressing the System
Power Control button 

1. Next, press and hold

the Surround Mode Button 

6 for 5 seconds.

The unit will turn on automatically. Note that
once you have cleared the memory in this manner,
it is necessary to re-establish all system
configuration settings and tuner presets.

NOTE: Resetting the processor will erase any
configuration settings you have made for
speakers, output levels, surround modes, digital
input assignments as well as the tuner presets.
After a reset the unit will be returned to the
factory presets, and all settings for these items
must be reentered.

If the system is still operating incorrectly, there
may have been an electronic discharge or severe
AC line interference that has corrupted the
memory or microprocessor.

If these steps do not solve the problem, consult
an authorized Harman Kardon service depot.

Unit does not function when 

• No AC Power

• Make certain AC power cord is plugged 

 is pushed

into a live outlet

• Check to see if outlet is switch controlled

Display lights, but no sound 

• Intermittent input connections

• Make certain that all input and speaker 

or picture

connections are secure

• Mute is on

• Press Mute button 

• Volume control is down

• Turn up volume control

Sound is heard, but Front-Panel

• Display brightness is turned off

• Follow the instructions in the Display Brightness section 

Display does not light 

on page 27 so that the display is set to VFD FULL

No sound from any speaker;

• Amplifier is in protection mode

• Check speaker-wire connections for shorts at receiver 

light around Power switch

1 is red

due to possible short

and speaker ends

• Amplifier is in protection mode 

• Contact your local Harman Kardon service depot

due to internal problems

No sound from surround or 

• Incorrect surround mode

• Select a mode other than Stereo

center speakers

• Incorrect configuration

• Check speaker mode 

• Stereo or Mono program material

• With (analog or digital) Dolby surround modes, the surround 

decoder may not create rear-channel 
information from non-encoded programs

• Speakers not properly connected

• Check speaker-wire connections or use test tone

to verify connections (see page 20)

Unit does not respond to 

• Weak batteries in remote

• Change remote batteries

remote commands

• Wrong device selected

• Press the AVR selector 

5

• Remote sensor

E is obscured

• Make certain front-panel sensor is visible to remote or 

connect remote sensor

Intermittent buzzing in tuner

• Local interference

• Move unit or antenna away from computers, fluorescent lights,

motors or other electrical appliances

Letters flash in the Channel Indicator

• Digital audio feed paused

• Resume play for DVD

 and Digital Audio stops

• Check that Digital Signal is fed to the Digital Input selected

32995_AVR137_ENG  16/05/07  12:29  Side 34

harman/kardon

AVR137/230 Service Manual

Page 5 of 87

NO

DESCRIPTION

PARTS NO.

Q,ty

1

2

3

4

5

1

ACCESSORY-1

BOX,OUT CARTON

5

6

1

3

DESCRIPTION

NO

CPS4A564

CQXAVR132/230

CPG1A820T

1

1

1

Q,ty

PARTS NO.

CPS4A565

SNOW,PAD(R)

4

1

1. Instruction manual ass'y - Accessories

2. Package Drawing

7

1

1

SNOW,PAD(L)

SET

AVR132/230SET

1

FM 1 POL ANT(UL)

CSA1A018Z

1

1

NO

DESCRIPTION

PARTS NO.

Q,ty

9

10

11

12

13

1

CPB1061Y

POLY BAG

CQX1A1154X

MANUAL,INSTRUCTION

MANUAL ,SETUP GUIDE

1

1

BOOKLET,INFORMATION

CQE1A180Z

1

STAPLE

CPL0905

3

ACCESSORY-2

ACCESSORY-1

CPB1061Y

POLY BAG

CSA1A027Z

AM LOOP ANTENNA ASS'Y

1

CABR03P3

BATTERY

3

COVER ASS'Y

CGRAVR130/230ZA

POLY BAG

1

12

7

2

3

AM LOOP ANTENNA ASS'Y

BATTERY  ASS'Y

4

FM 1 POLE ANT

5

COVER ASS'Y

6

BOOKLET,INFORMATION

9

MANUAL INSTRUCTION

10

MANUAL SETUP CODE

11

1

1

CGR1A332M7H43

CQE1A220Z

CPS1A676

1

CPB1A176Z

1

1

2 

3

4

5

CGR1A331M7H43

1

PAD , COVER

COVER A

COVER B

SHEET,FRONT COVER

BAG , POLY

ACCESSORY-2

CQXAVR132/230

CQX1A1138Y

13

1

IMAGE BROCHURES

HQE1A273Z

IMAGE BROCHURES

STAPLE

POLY BAG

ACCESSORY-1

1

SNOW PAD (R)

3

BOX ,OUT CARTON

5

SET

4

SNOW PAD (L)

2

ACCESSORY-2

6

REMOCON

TRANSMITTER ASS'Y

2

6

STAPLE

8

8

STAPLE

CPL0905

3

REMOCON ASS'Y

CARTAVR132/230

1

harman/kardon

AVR137/230 Service Manual

Page 6 of 87

AVR 137/230

1

2

1

1. Removing the Top Cabinet

 Remove the Screws

5

4

6

DISASSEMBLY

~

13

11

10

7

9

13

3

12

8

7

5

6

8

9

4

3

2

1

 Remove the Screws

2. Removing the Front Panel

1

9

~

6

3

4

7

 Remove the Screws

4. Removing the Main PCB

1

2

5

~

1

7

13

18

~

1

18

 Remove the Screws

10

9

8

14

7

6

5

15

16 17

3. Removing the Rear Panel

AVR137/230

11

4

3

2

1

12

harman/kardon

AVR137/230 Service Manual

Page 7 of 87

 
<1> TOP-CABINET(21) REMOVAL 

1. Remove 13 screws(S1,S7) and then remove the Top-cabinet. 

 
<2> FRONT PANEL ASS’Y REMOVAL 

1. Remove the Top-cabinet, referring to the previous step<1>. 
2. Disconnect the card cable between connector(CN72-17p) on the Fip PCB(37-1) 

and connector(CN72) on the Input PCB(39-1). 

3. Disconnect the lead wire(BN81-8P) on the Fip PCB(37-1) from connector(CN81) on the Trans PCB(40-4). 
4. Disconnect the lead wire(BN22-6P) on the Phone PCB(37-5) from connector(CN22) on the Input PCB(39-1). 
5. Disconnect the lead wire(BN18-5P) on the Phone PCB(37-5) from connector(CN18) on the Input PCB(39-1) 
6. Disconnect the lead wire(BN10-4P) on the Volume PCB(37-6) from connector(CN10) on the Input PCB(39-1) 
7. Disconnect the lead wire(BN41-6P) on the Volume PCB(37-6) from connector(CN41) on the Video PCB(41) 
8. Remove 1 screw(S10) and then lead wire(JW82-1P,JW83-1P) on the Phone PCB(37-5). 
9 .Remove 1screw(S10) and then lead wire(JW84-1P) on the Volume PCB(37-3). 
10. Remove 10 screws(S1) and then remove the Front Panel ASS’Y. 
 

<3> Volume PCB(37-6) REMOVAL 
    1. Remove the Top-cabinet, referring to the previous step<1>. 

2. Remove the Front Panel ASS’Y, referring to the previous step<2>. 
3. Pull out the Volume Knob ASS’Y. 
4. Disconnect    connector(CN84) on the Volume PCB(37-6) from the lead wire(BN84-5P) on the Fip PCB(37-1). 
5. Remove 8 screws(S2,S14), and then remove the Volume PCB(37-6). 

 

<4>PHONE PCB(37-5) REMOVAL 
    1. Remove the Top-cabinet, referring to the previous step<1>. 

2. Remove the Front Panel ASS’Y, referring to the previous step<2>. 
3.. Disconnect    connector(CN85)on the Phone PCB(37-5) from the lead wire(BN85-2P) on the Fip PCB(37-1). 
4. Remove 2 screws(S2) and then remove the Phone PCB(37-5). 
. 

<5>POWER LED PCB(37-3) REMOVAL 
    1. Remove the Top-cabinet, referring to the previous step<1>. 

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.   
3. Disconnect connector(CN88) on the Power Led PCB(37-3) from the lead wire(BN88-4P) on the Fip PCB(37-1) . 
4. Remove 2 screws(S2) and then remove the Power led PCB(37-3). 
 

<6>FIP PCB(37-1) REMOVAL 
    1. Remove the Top-cabinet, referring to the previous step<1>. 

2. Remove the Front Panel ASS’Y, referring to the previous step<2>.     
3. Disconnect the lead wire(BN84-5P) on the Fip PCB(37-1) from connector(CN84) on the Volume PCB(37-6). 
4. Disconnect the lead wire(BN85-2P) on the Fip PCB(37-1) from connector(CN85) on the Phone PCB(37-5). 
5. Disconnect the lead wire(BN88-4P) on the Fip PCB(37-1) from connector(CN88) on the Power Led PCB(37-3). 
6. Remove 3 screws(S2) and then remove the Guide PCB(37-8) & the Fip PCB(37-1). 
 
 

<7>TUNER MODULE(42) REMOVAL 

1. Remove the Top-cabinet, referring to the previous step<1>. 
2. Disconnect the card cable between connector(CON1-13p) on the Tuner module(42) 

and connector(CN13) on the Input PCB(39-1). 

harman/kardon

AVR137/230 Service Manual

Page 8 of 87