Denon AVR-789 ユーザーマニュアル

Denon Brand Company, D&M Holdings lnc.

For purposes of improvement, specifications and

design are subject to change without notice.

Please use this service manual with referring to the

operating instructions without fail.

Some illustrations using in this service manual are

slightly different from the actual set.

X0383 V.03 DE/CDM 0812

SERVICE MANUAL

AV SURROUND RECEIVER

MODEL JP E3 E2 EK E2A E1C EA

AVR-1909

33

AVR-789

33

AVC-1909

3

Ver. 3

Please refer to the

MODIFICATION NOTICE.

2

AVR-1909/789, AVC-1909

Please heed the points listed below during servicing and inspection.

Heed the cautions!

Spots requiring particular attention when servicing, such

as the cabinet, parts, chassis, etc., have cautions indicated

on labels or seals. Be sure to heed these cautions and the

cautions indicated in the handling instructions.

Caution concerning electric shock!

(1) An AC voltage is impressed on this set, so touching in-

ternal metal parts when the set is energized could

cause electric shock. Take care to avoid electric shock,

by for example using an isolating transformer and

gloves when servicing while the set is energized, un-

plugging the power cord when replacing parts, etc.

(2)There are high voltage parts inside. Handle with extra

care when the set is energized.

Caution concerning disassembly and

assembly!

Though great care is taken when manufacturing parts from

sheet metal, there may in some rare cases be burrs on the

edges of parts which could cause injury if fingers are

moved across them. Use gloves to protect your hands.

Only use designated parts!

The set's parts have specific safety properties (fire resis-

tance, voltage resistance, etc.). For replacement parts, be

sure to use parts which have the same properties. In par-

ticular, for the important safety parts that are marked z on

wiring diagrams and parts lists, be sure to use the desig-

nated parts.

Be sure to mount parts and arrange

the wires as they were originally!

For safety reasons, some parts use tape, tubes or other in-

sulating materials, and some parts are mounted away from

the surface of printed circuit boards. Care is also taken with

the positions of the wires inside and clamps are used to

keep wires away from heating and high voltage parts, so

be sure to set everything back as it was originally.

Inspect for safety after servicing!

Check that all screws, parts and wires removed or discon-

nected for servicing have been put back in their original po-

sitions, inspect that no parts around the area that has been

serviced have been negatively affected, conduct an insu-

lation check on the external metal connectors and between

the blades of the power plug, and otherwise check that

safety is ensured.

(Insulation check procedure)

Unplug the power cord from the power outlet, disconnect

the antenna, plugs, etc., and turn the power switch on. Us-

ing a 500V insulation resistance tester, check that the in-

sulation resistance between the terminals of the power

plug and the externally exposed metal parts (antenna ter-

minal, headphones terminal, microphone terminal, input

terminal, etc.) is 1M or greater. If it is less, the set must

be inspected and repaired.

Concerning important safety

parts

Many of the electric and structural parts used in the set

have special safety properties. In most cases these prop-

erties are difficult to distinguish by sight, and using re-

placement parts with higher ratings (rated power and

withstand voltage) does not necessarily guarantee that

safety performance will be preserved. Parts with safety

properties are indicated as shown below on the wiring dia-

grams and parts lists is this service manual. Be sure to re-

place them with parts with the designated part number.

(1) Schematic diagrams ... Indicated by the z mark.

(2) Parts lists ... Indicated by the z mark.

Using parts other than the designated

parts could result in electric shock, fires or

other dangerous situations.

SAFETY PRECAUTIONS

The following check should be performed for the continued protection of the customer and service technician.

LEAKAGE CURRENT CHECK

Before returning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to chassis

resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the

power cord is less than 460 kohms, the unit is defective.

CAUTION

3

AVR-1909/789, AVC-1909

z

4

AVR-1909/789, AVC-1909

DIMENSION

AVR-1909 model

5

AVR-1909/789, AVC-1909

AVR-789 model

6

AVR-1909/789, AVC-1909

WIRE ARRANGEMENT

If wire bundles are untied or moved to perform adjustment or

parts replacement etc., be sure to rearrange them neatly as

they were originally bundled or placed afterward.

Otherwise, incorrect arrangement can be a cause of noise

generation.

Wire arrangement viewed from the top

Back Panel side

Front Panel side

7

AVR-1909/789, AVC-1909

DISASSEMBLY

• Disassemble in order of the arrow of the figure of following flow.

• In the case of the re-assembling, assemble it in order of the reverse of the following flow.

• In the case of the re-assembling, observe "attention of assembling" it.

㩷

FRONT P.W.B ASSY HDMI P.W.B ASSY VIDEO P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF1) (Ref. No. of EXPLODED VIEW : BH1) (Ref. No. of EXPLODED VIEW : BV1)

V- AUX P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF2)

MIC P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF3)

FUNC P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF4) SIRIUS P.W.B ASSY CPU P.W.B ASSY

HEAD PHONE P.W.B ASSY (Ref. No. of EXPLODED VIEW : BS1) (Ref. No. of EXPLODED VIEW : BC1)

(Ref. No. of EXPLODED VIEW : BF6) INPUT P.W.B ASSY

POWER SW P.W.B ASSY (Ref. No. of EXPLODED VIEW : BI1)

(Ref. No. of EXPLODED VIEW : BF7)

ENCORDER P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF8)

TUNER PACK

(Ref. No. of EXPLODED VIEW : PR1)

MAIN P.W.B ASSY

TRANS CHASSIS BACK SUB ASSY

(Ref. No. of EXPLODED VIEW : BM1)

Refer to "DISASSEMBLY

2CH P.W.B ASSY

5.CHASSIS BACK SUBASSY"

(Ref. No. of EXPLODED VIEW : B21)

and "EXPLODED VIEW"

TRANS CHASSIS BACK SUB ASSY

(Ref. No. of EXPLODED VIEW : W8) (Ref. No. of EXPLODED VIEW : C2)

SPEAKER P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BF5)

POWER P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BP1)

POWER SUPPLY P.W.B ASSY

(Ref. No. of EXPLODED VIEW : BP2)

and "EXPLODED VIEW"

VIDEO P.W.B ASSY

Refer to "DISASSEMBLY

6.VIDEO P.W.B ASSY"

and "EXPLODED VIEW"

INPUT / CPU P.W.B ASSY

Refer to "DISASSEMBLY

7.INPUT / CPU P.W.B ASSY"

and "EXPLODED VIEW"

MAIN P.W.B SUB ASSY

POWER P.W.B SUB ASSY

Refer to "DISASSEMBLY

9.POWER P.W.B SUB ASSY"

Refer to "DISASSEMBLY

8.MAIN P.W.B SUB ASSY"

and "EXPLODED VIEW"

TUNER PAC

K

Refer to "DISASSEMBLY

4.TUNER PACK"

and "EXPLODED VIEW"

3.SIRIUS P.W.B ASSY"

Refer to "DISASSEMBLY

SIRIUS P.W.B ASSY

and "EXPLODED VIEW"

2.HDMI P.W.B ASSY"

Refer to "DISASSEMBLY

HDMI P.W.B ASSY

and "EXPLODED VIEW"

Refer to "DISASSEMBLY

10.TRANS"

and "EXPLODED VIEW"

CABINET TOP

PANEL FRONT SUB ASSY

Refer to "DISASSEMBLY

1.PANEL FRONT SUB ASSY"

8

AVR-1909/789, AVC-1909

1. PANEL FRONT SUB ASSY

(1) Remove the screws.

(2) Disconnect the connector wires.

Front side

Picture B

Picture A

Picture C

Picture D

Top view

The viewpoint of each photograph

(photography direction)

proceeding : CABINET TOP PANEL FRONT SUB ASSY

Bottom view

CORD HOLDER : Loose

CP541

CP503

CP302

CN301

Top view

cut

9

AVR-1909/789, AVC-1909

(3) Disconnect the FFC cable.

(4) Remove the screw.

(5) Disconnect the connector wire.

CORD HOLDER : Loose

FFC CABLE

Picture C

Top view

Picture C

CN306

Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in PANEL FRONT SUB ASSY .

10

AVR-1909/789, AVC-1909

2. HDMI P.W.B.ASSY

(1) Remove the screws.

(2) Disconnect the connector wires and boards.

3. SIRIUS P.W.B ASSY

(1) Remove the screw.

proceeding : CABINET TOP HDMI P.W.B ASSY

Picture B

HDMI P.W.B ASSY

Board to board

CP1007 CP1005

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

Picture B

11

AVR-1909/789, AVC-1909

(2) Disconnect the connector wire.

4. TUNER PACK

(1) Disconnect the FFC cable

(2) Remove the screws.

SIRIUS ASSY

Top view

CP901

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

TUNER PACK

Top view

FFC CABLE

Picture B

12

AVR-1909/789, AVC-1909

5. CHASSIS BACK SUB ASSY

(1) Disconnect the connector wires.

(2) Remove the screws.

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

TUNER PACK CHASSIS BACK SUB ASSY

Top view

cut

CP103 CP101

CP102B CP103

SPEAKER P.W.B ASSY

ً

Picture B

SPEAKER P.W.B. ASSY

Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in CHASSIS BACK SUB ASSY .

13

AVR-1909/789, AVC-1909

6. VIDEO P.W.B ASSY

(1) Disconnect the connector wires and boards.

7. INPUT / CPU P.W.B ASSY

(1) Disconnect the FFC cable.

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

TUNER PACK CHASSIS BACK SUB ASSY

VIDEO P.W.B ASSY

Picture D

Board to board

CP2010

SUPPORTER

CP2009CP2008Board to board

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

TUNER PACK CHASSIS BACK SUB ASSY

VIDEO P.W.B ASSY INPUT / CPU P.W.B ASSY

FFC CABLE

Picture C

CPU P.W.B ASSY

14

AVR-1909/789, AVC-1909

(2) Disconnect the connector wires and boards.

CP514

Picture D

INPUT P.W.B ASSY

Board to board

Picture D

Board to board

INPUT P.W.B ASSY

CPU P.W.B ASSY

15

AVR-1909/789, AVC-1909

8. MAIN P.W.B SUB ASSY

9. POWER P.W.B SUB ASSY

(1) Disconnect the connector wires and boards.

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

MAIN P.W.B SUB ASSY

TUNER PACK CHASSIS BACK SUB ASSY

VIDEO P.W.B ASSY INPUT / CPU P.W.B ASSY

Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in MAIN P.W.B ASSY .

proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY

TUNER PACK CHASSIS BACK SUB ASSY

POWER P.W.B SUB ASSY

Picture C

cut cut

CP513 CP512

CP504

CP503CP501

Board to board

POWER P.W.B ASSY

POWER SUPPLY P.W.B ASSY

Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in POWER P.W.B SUB ASSY.

16

AVR-1909/789, AVC-1909

10. TRANS

(1) Disconnect the connector wires.

proceeding : CABINET TOP TRANS

CP104 CN305

CP302

Top view

CP2008

cut cut

CP513 CP512 CP501

Picture C

cut cut

Please refer to "EXPLODED VIEW " for the disassembly method of POWER TRANS.

17

AVR-1909/789, AVC-1909

CAUTION IN SERVICING

Initializing AV SURROUND RECEIVER/AM-

PLIFIER

AV SURROUND RECEIVER/AMPLIFIER initialization should

be performed when the µcom, peripheral parts of µcom, and

Digital P.W.B. are replaced.

1. Switch off the unit.

2. With the "INPUTMODE" and "SPEAKERS" buttons

pressed, press the "ON/OFF" button to turn the power on.

3. Check that the entire display is flashing with an interval of

about 1 second, and release your fingers from the 2 but-

tons and the microprocessor will be initialized.

JIG to use for servicing

When you repair the printing board, you can use the following

JIG (Extension cable kit). Please order to Denon Official Ser-

vice Distributor in your region if necessary.

00D SPK- 561 EXTENSION UNIT KIT : 1 Set

00D SPK- 562 9120 CONN. JOINT KIT : 1 Set

When you update the firmware, you can use the following

JIG (RS232C to internal connector conversion adapter with

8P cable kit ). Please order to Denon Official Service Distrib-

utor in your region if necessary.

00DSPK-581 WRITING UNIT : 1 Set

Note: If step 3 does not work, start over from step 1.

All user settings will be lost and this factory setting

will be recovered when this initialization mode.

So make sure to m+emorize your setting for re-

storing after the initialization.

ON/OFF SPEAKERS

INPUTMODE

18

AVR-1909/789, AVC-1909

Check mode for µcom/DSP version

µcom/DSP Version Display Mode

1. Operation specifications

µcom/DSP version display mode:

When started up, the version information is displayed.

Starting up:

E3, EA, JP model

With the "DYN VOL" and "VIDEO SELECT" buttons

pressed, press the "ON/OFF" button to turn the power on.

Now, press the "STATUS" button to the display the 2nd

item information on the FL Display.

E2 model

With the "DYN VOL" and "RDS" buttons pressed, press

the "ON/OFF" button to turn the power on.

Now, press the "STATUS" button to the display the 2nd

item information on the FL Display.

2. Display Order

Destination information Main-µcom version information

DSP version information

ON/OFF

VIDEO SELECT

DYN VOL

E3, EA, JP model

STATUS

ON/OFF

RDS

DYN VOL

E2 model

19

AVR-1909/789, AVC-1909

PROCEDURE FOR CHECKING ERRORS

Displaying the protection history

1. Operation specifications

ERROR MODE(displaying the protection history)

When started up, the error information is displayed.

Starting up:

With the "MENU" and "MULTEQ" buttons pressed, press the "ON/OFF" button to turn the power on. The error (protection history dis-

play) mode is set.

Now, press the "STATUS" button to turn on the FL display.

2. About the display on the FL display

When the "STATUS" button is pressed after setting the error (protection history display) mode, a history like the one shown below is

displayed, depending on the conditions.

(1) Normally (when there has been no protection incident)

(2) For ASO/DC (when the last protection incident was ASO or DC protection)

(3) For THERMAL (when the last protection incident was THERMALprotection)

When the "STATUS" button is pressed again after the above protection history is displayed, the normal display reappears.

Upper P R O T E C T ISTORY

Lower : N O P R O T E C T

Upper P R O T E C T ISTORY

Lower : A S O / D C

Upper P R O T E C T ISTORY

Lower : T H E R M A L

ON/OFF MULTEQ ENTER

MENU

STATUS

PROTECT ISTORY

:NO PROTECT

PROTECT ISTORY

:ASO/DC

PROTECT ISTORY

:THERMAL

ON/OFF MULTEQ ENTER

MENU

STATUS

20

AVR-1909/789, AVC-1909

3. Clearing the protection history

There are two ways to clear the protection history, as described below.

(1) Start up the error (protection display) mode, display the error, then press and hold in the "ENTER" button for 3 seconds.

Press and hold in the "ENTER" button for 3 seconds

The above is displayed and the protection history is cleared.

(2) Initialize.

If you want to save a backup, use the method in 3.(1) above.

Warning indication by the STANDBY LED

If the power is turned off when a protection incident has been detected, the STANDBY LED (red) flashes as follows as warning ac-

cording to the conditions in which the protection incident occurred.

(1) ASO/DC PROTECTION : Flashes in cycles of 0.5 seconds (0.25 seconds lit, 0.25 seconds off)

(2) THERMAL PROTECTION : Flashes in cycles of 2 seconds (1 second lit, 1 second off)

Upper P R O T E C T ISTORY

Lower : T H E R M A L

Upper P R O T E C T ISTORY

Lower C L E A R

Upper P R O T E C T ISTORY

Lower : N O P R O T E C T

PROTECT ISTORY

:THERMAL

PROTECT ISTORY

CLEAR

PROTECT ISTORY

:NO PROTECT

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