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Ver. 3
Please refer to the
MODIFICATION NOTICE.
SERVICE MANUAL
MODEL JP E3 E2 EK E2A E1C EA
AVR-1909
AVR-789
AVC-1909
AV SURROUND RECEIVER
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.
Denon Brand Company, D&M Holdings lnc.
X0383 V.03 DE/CDM 0812
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 Please heed the points listed below during servicing and inspection.
Heed the cautions! Inspect for safety after servicing!
Spots requiring particular attention when servicing, such Check that all screws, parts and wires removed or discon-
as the cabinet, parts, chassis, etc., have cautions indicated nected for servicing have been put back in their original po-
on labels or seals. Be sure to heed these cautions and the sitions, inspect that no parts around the area that has been
cautions indicated in the handling instructions. serviced have been negatively affected, conduct an insu-
lation check on the external metal connectors and between
Caution concerning electric shock! the blades of the power plug, and otherwise check that
safety is ensured.
(1) An AC voltage is impressed on this set, so touching in-
ternal metal parts when the set is energized could
(Insulation check procedure)
cause electric shock. Take care to avoid electric shock,
Unplug the power cord from the power outlet, disconnect
by for example using an isolating transformer and
the antenna, plugs, etc., and turn the power switch on. Us-
gloves when servicing while the set is energized, un-
ing a 500V insulation resistance tester, check that the in-
plugging the power cord when replacing parts, etc.
sulation resistance between the terminals of the power
(2)There are high voltage parts inside. Handle with extra plug and the externally exposed metal parts (antenna ter-
care when the set is energized. minal, headphones terminal, microphone terminal, input
terminal, etc.) is 1M or greater. If it is less, the set must
Caution concerning disassembly and be inspected and repaired.
assembly!
Though great care is taken when manufacturing parts from
sheet metal, there may in some rare cases be burrs on the
CAUTION Concerning important safety
edges of parts which could cause injury if fingers are
moved across them. Use gloves to protect your hands.
parts
Only use designated parts! Many of the electric and structural parts used in the set
have special safety properties. In most cases these prop-
The set's parts have specific safety properties (fire resis- erties are difficult to distinguish by sight, and using re-
tance, voltage resistance, etc.). For replacement parts, be placement parts with higher ratings (rated power and
sure to use parts which have the same properties. In par- withstand voltage) does not necessarily guarantee that
ticular, for the important safety parts that are marked z on safety performance will be preserved. Parts with safety
wiring diagrams and parts lists, be sure to use the desig- properties are indicated as shown below on the wiring dia-
nated parts. grams and parts lists is this service manual. Be sure to re-
place them with parts with the designated part number.
Be sure to mount parts and arrange
the wires as they were originally! (1) Schematic diagrams ... Indicated by the z mark.
For safety reasons, some parts use tape, tubes or other in- (2) Parts lists ... Indicated by the z mark.
sulating materials, and some parts are mounted away from
Using parts other than the designated
the surface of printed circuit boards. Care is also taken with
parts could result in electric shock, fires or
the positions of the wires inside and clamps are used to
other dangerous situations.
keep wires away from heating and high voltage parts, so
be sure to set everything back as it was originally.
2
AVR-1909/789, AVC-1909
z
z
z
3
AVR-1909/789, AVC-1909
DIMENSION
AVR-1909 model
4
AVR-1909/789, AVC-1909
AVR-789 model
5
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
6
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.
CABINET TOP
PANEL FRONT SUB ASSY HDMI P.W.B ASSY VIDEO P.W.B ASSY
Refer to "DISASSEMBLY Refer to "DISASSEMBLY Refer to "DISASSEMBLY
1.PANEL FRONT SUB ASSY" 2.HDMI P.W.B ASSY" 6.VIDEO P.W.B ASSY"
and "EXPLODED VIEW" and "EXPLODED VIEW" and "EXPLODED VIEW"
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) SIRIUS P.W.B ASSY INPUT / CPU P.W.B ASSY
MIC P.W.B ASSY Refer to "DISASSEMBLY Refer to "DISASSEMBLY
(Ref. No. of EXPLODED VIEW : BF3) 3.SIRIUS P.W.B ASSY" 7.INPUT / CPU P.W.B ASSY"
FUNC P.W.B ASSY and "EXPLODED VIEW" and "EXPLODED VIEW"
(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 TUNER PACK (Ref. No. of EXPLODED VIEW : BI1)
(Ref. No. of EXPLODED VIEW : BF7) Refer to "DISASSEMBLY
ENCORDER P.W.B ASSY 4.TUNER PACK" MAIN P.W.B SUB ASSY
(Ref. No. of EXPLODED VIEW : BF8) and "EXPLODED VIEW" Refer to "DISASSEMBLY
TUNER PACK 8.MAIN P.W.B SUB ASSY"
(Ref. No. of EXPLODED VIEW : PR1) and "EXPLODED VIEW"
MAIN P.W.B ASSY
TRANS CHASSIS BACK SUB ASSY (Ref. No. of EXPLODED VIEW : BM1)
Refer to "DISASSEMBLY Refer to "DISASSEMBLY 2CH P.W.B ASSY
10.TRANS" 5.CHASSIS BACK SUBASSY" (Ref. No. of EXPLODED VIEW : B21)
and "EXPLODED VIEW" 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 SUB ASSY
Refer to "DISASSEMBLY
9.POWER P.W.B SUB ASSY"
and "EXPLODED VIEW"
POWER P.W.B ASSY
(Ref. No. of EXPLODED VIEW : BP1)
POWER SUPPLY P.W.B ASSY
(Ref. No. of EXPLODED VIEW : BP2)
7
AVR-1909/789, AVC-1909
The viewpoint of each photograph Picture A
(photography direction) Front side
Top view
Picture C Picture D
Picture B
1. PANEL FRONT SUB ASSY
proceeding : CABINET TOP PANEL FRONT SUB ASSY
(1) Remove the screws.
Bottom view
(2) Disconnect the connector wires.
CP541 CORD HOLDER : Loose CP302
Top view
CP503 cut CN301
8
AVR-1909/789, AVC-1909
(3) Disconnect the FFC cable.
FFC CABLE
Picture C
CORD HOLDER : Loose
(4) Remove the screw.
Top view
(5) Disconnect the connector wire.
Picture C
CN306
Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in PANEL FRONT SUB ASSY .
9
AVR-1909/789, AVC-1909
2. HDMI P.W.B.ASSY
proceeding : CABINET TOP HDMI P.W.B ASSY
(1) Remove the screws.
Picture B
(2) Disconnect the connector wires and boards.
HDMI P.W.B ASSY CP1007 CP1005
Picture B
Board to board
3. SIRIUS P.W.B ASSY
proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY
(1) Remove the screw.
Picture B
10
AVR-1909/789, AVC-1909
(2) Disconnect the connector wire.
Top view
CP901 SIRIUS ASSY
4. TUNER PACK
proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY
TUNER PACK
(1) Disconnect the FFC cable
Top view
FFC CABLE
(2) Remove the screws.
Picture B
11
AVR-1909/789, AVC-1909
5. CHASSIS BACK SUB ASSY
proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY
TUNER PACK CHASSIS BACK SUB ASSY
(1) Disconnect the connector wires.
CP102B cut CP103
Top view
CP103 CP101 SPEAKER P.W.B ASSY
(2) Remove the screws.
Picture B
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 .
12
AVR-1909/789, AVC-1909
6. VIDEO P.W.B ASSY
proceeding : CABINET TOP HDMI P.W.B ASSY SIRIUS P.W.B ASSY
TUNER PACK CHASSIS BACK SUB ASSY
VIDEO P.W.B ASSY
(1) Disconnect the connector wires and boards.
VIDEO P.W.B ASSY Board to board CP2010
Picture D SUPPORTER
Board to board CP2008 CP2009
7. INPUT / CPU P.W.B ASSY
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
(1) Disconnect the FFC cable.
CPU P.W.B ASSY
Picture C
FFC CABLE
13
AVR-1909/789, AVC-1909
(2) Disconnect the connector wires and boards.
INPUT P.W.B ASSY
Picture D
CP514
CPU P.W.B ASSY Board to board
Picture D
INPUT P.W.B ASSY Board to board
14
AVR-1909/789, AVC-1909
8. MAIN P.W.B SUB ASSY
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
MAIN P.W.B SUB ASSY
Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in MAIN P.W.B ASSY .
9. POWER P.W.B SUB 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
(1) Disconnect the connector wires and boards.
cut CP513 CP512 cut CP504 CP501 CP503
POWER P.W.B ASSY
Picture C
POWER SUPPLY P.W.B ASSY
Board to board
Please refer to "EXPLODED VIEW " for the disassembly method of each P.W.B included in POWER P.W.B SUB ASSY.
15
AVR-1909/789, AVC-1909
10. TRANS
proceeding : CABINET TOP TRANS
(1) Disconnect the connector wires.
cut CP2008 cut CP302
Top view
CP104 CN305
cut CP513 CP512 cut CP501
Picture C
Please refer to "EXPLODED VIEW " for the disassembly method of POWER TRANS.
16
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.
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
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
17
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.
E3, EA, JP model E2 model
ON/OFF DYN VOL ON/OFF DYN VOL
STATUS VIDEO SELECT STATUS RDS
2. Display Order
Destination information Main-µcom version information
DSP version information
18
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.
ON/OFF MULTEQ ENTER ON/OFF MULTEQ ENTER
STATUS MENU STATUS MENU
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)
Upper P R O T E C T I S T O R Y P R O T E C T I S T O R Y
Lower : N O P R O T E C T : N O P R O T E C T
(2) For ASO/DC (when the last protection incident was ASO or DC protection)
Upper P R O T E C T I S T O R Y
P R O T E C T I S T O R Y
Lower : A S O / D C
: A S O / D C
(3) For THERMAL (when the last protection incident was THERMALprotection)
Upper P R O T E C T I S T O R Y
Lower : T H E R M A L P R O T E C T I S T O R Y
: T H E R M A L
When the "STATUS" button is pressed again after the above protection history is displayed, the normal display reappears.
19
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.
Upper P R O T E C T I S T O R Y P R O T E C T I S T O R Y
Lower : T H E R M A L : T H E R M A L
Press and hold in the "ENTER" button for 3 seconds
Upper P R O T E C T I S T O R Y
P R O T E C T I S T O R Y
Lower C L E A R
C L E A R
The above is displayed and the protection history is cleared.
Upper P R O T E C T I S T O R Y
Lower : N O P R O T E C T P R O T E C T I S T O R Y
: N O P R O T E C T
(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)
20
AVR-1909/789, AVC-1909
ADJUSTMENT
Audio Section
Idling Current
Required measurement equipment: DC Voltmeter
1. Preparation
(1) Avoid direct blow from an air conditioner or an electric
fan, and adjust the unit at normal room temperature 15
°C ~ 30 °C (59 °F ~ 86 °F).
(2) Presetting
· POWER (Power source switch) OFF
· SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
2. Adjustment
(1) Remove top cover and set VR101 FL, FR, C, SL, SR,
on Main Amp. Unit, VR401, VR402 on 2ch- Amp. Unit
at fully counterclockwise (c) position. c
(2) Connect DC Voltmeter to test points (FRONT-Lch:
TP101, FRONT-Rch: TP105, CENTER ch: TP103,
SURROUND-Lch: TP102, SURROUND-Rch: TP104,
SURROUND-BACK Lch: TP401, SURROUND-BACK
Rch: TP402).
(3) Connect power cord to AC Line, and turn power switch
"ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (c min.)
SPEAKER (Speaker terminal) : No load c
(Do not connect speaker, dummy resistor, etc.)
MODE : 7CH STEREO (5CH STEREO)
FUNCTION : CD
(5) Within 2 minutes after the power on, turn VR101 clock-
wise (x) to adjust the TEST POINT voltage to
x
1.5 mV ± 0.5 mV DC.
(6) After 10 minutes from the preset above, turn VR101 to
set the voltage to
2.0 mV ± 0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the
same way.
MAIN AMP. UNIT
DC Voltmeter
F Lch S Lch C ch S Rch F Rch
VR101FL VR101SL VR101C VR101SR VR101FR 2CH AMP. UNIT
TP101
TP102 TP103 TP104 TP105
VR401 VR402
TP401 TP402
S Back Lch S Back Rch
21
AVR-1909/789, AVC-1909
---MEMO---
22
AVR-1909/789, AVC-1909
TROUBLE SHOOTING
1. POWER
1.1. Power not turn on
Power not turn on
Are there any incomplete con-
Is the ON/STANDBY indicator Is there a short circuit between Correct the short circuit
YES nections in the connectors con- NO YES YES NO YES
on the front panel flashing the speaker terminals and the between the speaker and the
necting between the various
red? ground? ground.
circuit boards?
YES NO YES NO
Check for damage in the power
Connect the connectors prop-
NO amplifier circuitry parts and NO
erly.
replace any defective parts.
NO NO
Is the fuse blown? Refer to Fuse is blown
YES YES
Is a DC 6V voltage output when
Is a DC 6V voltage being sup-
Does the power turn on when the cord supplying the power Check the parts from IC501 to NO NO NO
NO plied from the POWER UNIT NO NO
the POWER switch is turned from the SUPPLY UNIT to the the primary circuitry and
(CN505 pins 4, 5) to the micro-
off then back on? microprocessor (CP514) is replace any defective parts.
processor?
unplugged?
YES YES YES
YES YES YES
Check the primary circuitry Check the circuitry and parts
parts including the POWER Check the microprocessor from CP514 on the SUPPLY
switch (for poor contacts, periphery circuitry and replace UNIT to the microprocessor for
etc.), and replace any defec- any defective parts. damage and short-circuits, and
tive parts. replace any defective parts.
1.2. Fuse is blown
Fuse is blown
Check for short circuits in the Check for short circuits in the
Check for leaks or short cir-
rectifier diodes and circuitry of power stabilizer unit's regula-
cuits in the primary side parts,
the secondary side rectifying tor output terminal and the
and replace any defective
circuits, and replace any defec- ground, and replace any defec-
parts.
tive parts. tive parts.
After repairing, also replace the fuse.
23
AVR-1909/789, AVC-1909
2. Analog video
2.1. Monitor out & VCR out
MONITOR OUT (CVBS/S/COMPONENT) output NG When checking operation, select
DVD for the function.
(COMPONENT1 input)
Checking the video convert ON/OFF settings
Video convert ON
Input Input Input
CVBS S COMPONENT
A Interlace
or
Progressive
Interlace Progressive
B no output
VCR MONITOR OUT (CVBS/S) Output NG When checking operation, select
DVD for the function.
Input Input
CVBS S
C
24
AVR-1909/789, AVC-1909
A
Input
CVBS/S
Check power supply voltage Check power supply voltage
VIDEO UNIT HDMI UNIT
NG To troubleshooting 1.1 NG
+5V : CN2005-8pin +3.3V : IC1015-O,IC1017-IN
Power not turn on.
-5V : CN2005-7pin +1.8V : IC1016,IC1017-O
MC_+5V : CN2001-5pin
OK OK
Check input of input selector
Check input of HDMI UNIT video decoder
and Video AMP, surrounding
signal. Check VIDEO CNT UNIT signal DET.
NG NG circuitry soldering. NG NG
Input V : C1272 V : CP1006-11pin : H(+5V)
Input : IC2002,IC2003,IC2004
Input Y : C1270 Y : CP1006-10pin : H(+5V)
Video AMP : IC2008,IC2001,IC2005
Input C : C1274
or CPU UNIT flaw.
OK OK
Check soldering of VIDEO CNT UNIT
OK
OK connector base, and check poor
contacts.
Check output of driver(IC1018)
Check output of after HDMI UNIT
after HDMI UNIT video encoder.
video encoder. Check input of HDMI UNIT Video
OutputV : CN1008 7pin NG NG
OutputY : C1245 -side§ Decoder(IC1020)/
OutputY : CN1008 11pin NG NG
Output C : C1243 Encoder(IC1019) and surrounding
Output C : CN1008 9pin
Output Y : C1257 -side§ circuitry soldering.
Output Y : CN1009 9pin§
Output Cb : C1260 -side§ or CPU UNIT flaw.
Output Cb : CN1009 11pin
Output Cr : C1265 -side§
Output Cr : CN1009 13pin
OK
OK
OK
Check soldering of IC1015 and
OK
surrounding parts.
CVBS/S COMPONENT
CVBS/S output COMPONENT output
NG
Check soldering of output selector
Check output of AMP.
and surrounding circuitry. Check sol-
Output V : IC2016-24pin NG
dering of VIDEO CNT UNIT connec-
Output Y : IC2016-20pin
tor base. OK
Output C : IC2016-22pin
Output : IC2014,IC2015
OK
Check cable between main unit
and monitor or Check monitor.
NG NG
Check input of input selector Check input of AMP Check output of AMP
and surrounding circuitry soldering. NG Input Y : C2123 +side§ NG Output Y : IC2022-13pin
Input : IC2023 Input Cb : C2131 +side§ Output Cb : IC2022-11pin
OK OK
or CPU UNIT flaw. Input Cr : C2136 +side§ Output Cr : IC2022-9pin
OK OK
Check soldering of IC2022 and Check cable between main unit
surrounding parts. and monitor or Check monitor.
Unless specified, VIDEO UNIT part.
25
AVR-1909/789, AVC-1909
B
Input
COMPONENT
Check power supply voltage Check power supply voltage
VIDEO UNIT HDMI UNIT
NG To troubleshooting 1.1 NG
+5V : CN2005-8pin +9V : CN2005-9pin
Power not turn on.
-5V : CN2005-7pin +3.3 : IC1015-O,IC1017-IN
MC_+5V : CN2001-5pin +1.8V : IC1016,IC1017-O
OK OK
Check input of input selector
Check input of HDMI UNIT video decoder
and Video AMP, surrounding
signal.
NG Check VIDEO CNT UNIT signal DET. NG circuitry soldering. NG NG
Input V : C1281
Y : CP1006-12pin : H(+5V) Input : IC2023
Input Y : C1273
Video AMP : IC2021
Input C : C1271
or CPU UNIT flaw.
OK OK
Check soldering of VIDEO CNT UNIT
OK
OK connector base, and check poor
contacts.
Check output of driver(IC1018)
Check output of after HDMI UNIT
after HDMI UNIT video encoder.
video encoder. Check input of HDMI UNIT Video
OutputV : CN1008 7pin NG NG
OutputY : C1245 -side§ Decoder(IC1020)/
OutputY : CN1008 11pin NG NG
Output C : C1243 Encoder(IC1019) and surrounding
Output C :CN1008 9pin
Output Y: C1257 -side§ circuitry soldering.
Output Y: CN1009 9pin§
Output Cb : C1260 -side§ or CPU UNIT flaw.
Output Cb : CN1009 11pin
Output Cr : C1265 -side§
Output Cr : CN1009 13pin
OK
OK
OK
Check soldering of IC1015 and
OK
surrounding parts.
CVBS/S COMPONENT
CVBS/S output COMPONENT output
NG
Check soldering of output selector
Check output of AMP
and surrounding circuitry. Check sol-
Output V : IC2016-24pin NG
dering of VIDEO CNT UNIT connec-
Output Y : IC2016-20pin
tor base. OK
Output C : IC2016-22pin
Output : IC2014,IC2015
OK
Check cable between main unit
and monitor or Check monitor.
NG NG
Check input of input selector and
surrounding circuitry soldering. Check Check input of AMP Check output of AMP
soldering of VIDEO CNT UNIT connector NG Input Y : C2123 +side§ NG Output Y : IC2022-13pin
base. Input Cb : C2131 +side§ Output Cb : IC2022-11pin
OK OK
Input : IC2023 Input Cr : C2136 +side§ Output Cr : IC2022-9pin
or CPU UNIT flaw.
OK OK
Check soldering of IC2022 and Check cable between main unit
surrounding parts. and monitor or Check monitor.
Unless specified, VIDEO UNIT part.
26
AVR-1909/789, AVC-1909
C
Input
CVBS/S
Check power supply voltage
+5V : CN2005-8pin NG To troubleshooting 1.1 Power not turn NG
-5V : CN2005-7pin on.
MC_+5V : CN2001-5pin
OK OK
Check output of AMP
Output V : IC2016-33pin NG Check VCRINH NG Check soldering of VIDEO CNT UNIT NG NG
Output Y : IC2016-31pin INH : CP2002-10pin : H(+5V) connector base, and check poor contacts.
Output C : IC2016-29pin
OK OK OK
Check input of input selector and
Check cable between main unit
surrounding circuitry soldering.
and monitor or Check monitor.
Input : IC2009,IC2010,IC2011
Unless specified, VIDEO UNIT part.
27
AVR-1909/789, AVC-1909
2.2. HDMI out
HDMI OUT output NG When checking operation, select
DVD for the function.
(COMPONENT1 input)
Checking the video convert ON/OFF settings
Video convert ON
Input Input Input Input
CVBS S COMPONENT HDMI
D
To troubleshooting of
HDMI/DVI
YES
YES
Input 1080p? No output
E
28
AVR-1909/789, AVC-1909
D
Input
CVBS/S
Check power supply voltage Check power supply voltage
+5V : CN2005-8pin +3.3 : IC1015-O,IC1017-IN NG To troubleshooting 1.1 NG
-5V : CN2005-7pin +1.8V : IC1016,IC1017-O Power not turn on.
MC_+5V : CN2001-5pin
OK OK
Check input of input selector
Check input of HDMI UNIT video decoder
and Video AMP, surrounding
signal. Check VIDEO CNT UNIT signal DET.
NG NG circuitry soldering. NG NG
Input V : C1272 V : CP1006-11pin : H(+5V)
Input : IC2002,IC2003,IC2004
Input Y : C1270 Y : CP1006-12pin : H(+5V)
Video AMP : IC2008,IC2001,IC2005
Input C : C1274
or CPU UNIT flaw.
OK OK
Check soldering of VIDEO CNT UNIT
OK
OK connector base, and check poor
contacts.
To troubleshooting of HDMI/DVI
Unless specified, VIDEO UNIT part.
E
Input
COMPONENT
Check power supply voltage
Check power supply voltage
+9V : CN2005-9pin
+5V : CN2005-8pin NG To troubleshooting 1.1 NG
+3.3 : IC1015-O,IC1017-IN
-5V : CN2005-7pin Power not turn on.
+1.8V : IC1016,IC1017-O
MC_+5V : CN2001-5pin
OK
OK
Check input of input selector
Check input of HDMI UNIT video decoder
and Video AMP, surrounding
signal. NG NG
NG Check VIDEO CNT UNIT signal DET. NG circuitry soldering.
Input Y : C1281
Y : CP1006-12pin : H(+5V) Input : IC2023
Input Cb : C1273
Video AMP : IC2021
Input Cr : C1271
or CPU UNIT flaw.
OK
OK
Check soldering of VIDEO CNT UNIT OK
OK connector base, and check poor
contacts.
To troubleshooting of HDMI/DVI
Unless specified, VIDEO UNIT part.
29
AVR-1909/789, AVC-1909
3. HDMI/DVI
3.1. No picture or sound is output
No picture or sound is output
YES YES
Check the HDMI/DVI cable connection
YES YES
Is the HDMI/DVI cable properly NO There may be a problem with the HDMI/ NO
connected? DVI cable. Check the connection.
YES
YES
Are you using an HDMI/DVI selector,
YES Disconnect everything and connect only
repeater or a device for improving picture YES
the HDMI/DVI cable to check.
quality?
NO
NO
Are you using a certified HDMI cable (one NO Use a certified HDMI cable (one with the
NO
with the HDMI stamp)? HDMI stamp).
YES YES
Replace the HDMI/DVI cable with one
Are you using an HDMI/DVI cable less NO NO
that is less than 5 meters in length (2
than 5 meters in length?
meters recommended) to check.
YES YES
Are the picture and sound output when YES YES
The HDMI/DVI cable is defective.
another HDMI/DVI cable is used?
NO NO
Checking the DVD player
YES YES
Check the HDMI output setting, referring NO
Is the DVD player's HDMI output setting YES
to the DVD player's operating
correct?
instructions.
YES
YES
When using a DENON DVD player, is the fluorescent display tube's
"HDMI" indicator lit?
If using a non-DENON DVD player, proceed to "YES".
YES
YES
Set the DVD player's output resolution YES
Are the picture and sound output when NO
YES
NO to a resolution with which the TV is
the DVD player's resolution is changed?
compatible.
NO
NO
Is sound output from the set's speaker terminals when the TV's power is The DVD player may not be compatible YES
YES
turned off or the connection cable between the TV and the set is with HDCP repeaters. Ask the DVD
disconnected? player's manufacturer.
NO NO
Are the picture and sound output when a YES YES
The DVD player is defective.
different DVD playe