Denon+avc 3808,+avr-3808,+avr-3808 ci

Ver. 3
Please refer to the
MODIFICATION NOTICE.

SERVICE MANUAL
MODEL JP EU EC E2 EK E2A E1C EUT

AVR-3808CI
AVR-3808
AVC-3808
2

AV SURROUND RECEIVER
AV SURROUND AMPLIFIER

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.

TOKYO, JAPAN
Denon Brand Company, D&M Holdings lnc.

X0343 V.03 DE/CDM 0710

AVR-3808CI / AVR-3808 / AVC-3808

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 as Check that all screws, parts and wires removed or discon-
the cabinet, parts, chassis, etc., have cautions indicated on nected for servicing have been put back in their original posi-
labels or seals. Be sure to heed these cautions and the cautions, inspect that no parts around the area that has been
tions indicated in the handling instructions. serviced have been negatively affected, conduct an insulation
check on the external metal connectors and between the
Caution concerning electric shock! blades of the power plug, and otherwise check that safety is
ensured.
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
(Insulation check procedure)
electric shock. Take care to avoid electric shock, by for ex-
Unplug the power cord from the power outlet, disconnect the
ample using an isolating transformer and gloves when
antenna, plugs, etc., and turn the power switch on. Using a
servicing while the set is energized, unplugging the power
500V insulation resistance tester, check that the insulation re-
cord when replacing parts, etc.
sistance between the terminals of the power plug and the ex-
(2)There are high voltage parts inside. Handle with extra care ternally exposed metal parts (antenna terminal, headphones
when the set is energized. terminal, microphone terminal, input terminal, etc.) is 1M or
greater. If it is less, the set must be inspected and repaired.
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 CAUTION Concerning important safety parts
across them. Use gloves to protect your hands.
Many of the electric and structural parts used in the set have
Only use designated parts! special safety properties. In most cases these properties are
difficult to distinguish by sight, and using replacement parts
The set's parts have specific safety properties (fire resis- with higher ratings (rated power and withstand voltage) does
tance, voltage resistance, etc.). For replacement parts, be not necessarily guarantee that safety performance will be pre-
sure to use parts which have the same properties. In particu- served. Parts with safety properties are indicated as shown
lar, for the important safety parts that are marked ! on wiring below on the wiring diagrams and parts lists is this service
diagrams and parts lists, be sure to use the designated parts. manual. Be sure to replace them with parts with the designat-
ed part number.
Be sure to mount parts and arrange the
wires as they were originally! (1) Schematic diagrams ... Indicated by the ! mark.
For safety reasons, some parts use tape, tubes or other insu- (2) Parts lists ... Indicated by the ! mark.
lating materials, and some parts are mounted away from the
Using parts other than the designated parts
surface of printed circuit boards. Care is also taken with the
could result in electric shock, fires or other
positions of the wires inside and clamps are used to keep
dangerous situations.
wires away from heating and high voltage parts, so be sure to
set everything back as it was originally.

2

AVR-3808CI / AVR-3808 / AVC-3808

DIMENSION

3

AVR-3808CI / AVR-3808 / AVC-3808

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

AVR-3808CI/AVR-3808 model

Back Panel side

Front Panel side

4

AVR-3808CI / AVR-3808 / AVC-3808

AVC-3808 model

Back Panel side

Front Panel side

5

AVR-3808CI / AVR-3808 / AVC-3808

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. Hold the following STANDARD button and DSP SIMULA-
TION button, and switch on the unit.
3. Check that the entire display is flashing with an interval of
about 1 second, and release your fingers from the 2 buttons
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 memorize your setting for restoring
after the initialization.

1,2 2,3

JIG to use for servicing
When you repair the printing board, you can use the following
JIG (Extention cable kit). Please order to Denon Official Service
Distributor in your region if necessary.

00D SPK- 561 EXTENSION UNIT KIT : 1 Set
00D SPK- 562 TUCP CONN. JOINT KIT : 1 Set

6

AVR-3808CI / AVR-3808 / AVC-3808

CHECK WITH TEST MODE
µcom/DSP Error Display Mode
1. Operation Spec
µcom version display mode:
When the following conditions are satisfied at its starting state, error information is displayed before version information.

Starting method (same as µcom version display):
While pressing 2 buttons, "STATUS (S07)" and "RETURN (S19)", turn on Power switch.
Then, press "STATUS" button to display the following information on the FL Display.

2. Display Order
Error information Destination information Main-µcom version information Sub-µcom version information

DSP version information

3. Display
Any one of the following list is displayed, in the priority of .

Condition State Display

Sub-µcom NG No response from Sub-µcom

DIR NG No response from DIR

DSP1 NG When DSP boot, executing DSP reset makes no change to BUSY port "L". 1
No change to BUSY port "L" before issuing DSP command. 1
When DSP data read, executing WRITE="L" makes no change to ACK="H". 1
When DSP data read, executing REQ="L" makes no change to ACK="L". 1
When DSP data write, executing WRITE="H" makes no change to
1
ACK="H".
When DSP data write, executing REQ="L" makes no change to ACK="L". 1
When DSP special code boot, executing DSP reset makes no change to
1
BUSY port "L".
No change to BUSY port "L" before issuing DSP special read command. 1
No change to BUSY port "L" before DSP version read. 1

DSP2 NG When DSP boot, executing DSP reset makes no change to BUSY port "L". 2

No change to BUSY port "L" before issuing DSP command. 2
When DSP data read, executing WRITE="L" makes no change to ACK="H". 2
When DSP data read, executing REQ="L" makes no change to ACK="L". 2
When DSP data write, executing WRITE="H" makes no change to
2
ACK="H".
When DSP data write, executing REQ="L" makes no change to ACK="L". 2
When DSP special code boot, executing DSP reset makes no change to
2
BUSY port "L".
No change to BUSY port "L" before issuing DSP special read command. 2
No change to BUSY port "L" before DSP version read. 2

Both SUB/DSP OK (No error display, version display only) ( )

7

AVR-3808CI / AVR-3808 / AVC-3808

ADJUSTMENT
Audio Section
Idling Current (1U-3806-1)
Required measurement equipment: DC Voltmeter
Preparation
(1) Avoid direct blow from an air conditioner or an electric
fan, and adjust the unit at normal room tempereture 15°C
~ 30°C (59°F ~ 86°F).
(2) Presetting
POWER (Power sourse switch) OFF
SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)

Adjustment
(1) Remove top cover and set VR101, VR102, VR103,
VR104, VR105, VR106, VR107, on 1U-3806-1 (Power
Amp Unit) at fully counterclockwise ( ).
(2) Connect DC Voltmeter to test points (FRONT-Lch:
TP101 pin, FRONT-Rch: TP101 pin,
CENTER ch: TP101 pin, SURROUND-Lch: TP102
pin, SURROUND-Rch: TP102 pin,
SURROUND BACK-Lch: TP102 pin, SURROUND
BACK-Rch: TP102 pin).
(3) Connect power cord to AC Line, and turn power switch
"ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise ( min.)
MODE : 7CH STEREO
FUNCTION : CD
(5) Allow 2 minutes, and turn VR101 clockwise ( ) to
adjust the TEST POINT voltage to 6.5 mV 0.5 mV DC.
(6) After 10 minutes from preset, turn VR101 to set the
voltage to 8 mV 0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the
same way.
(8) After 5 minutes from (6), turn VR101 to set the voltage to
8 mV 0.5 mV DC.
(9) Adjust the Variable Resistors of other channels in the
same way.

8

AVR-3808CI / AVR-3808 / AVC-3808

DC Voltmeter TP102 TP101

SBR ch
SBL ch

SR ch

FR ch
SL ch

FL ch
C ch
1U-3806-1 POWER AMP Unit

1U-3802-2 POWER SUPPLY-1 Unit

TP102 TP101

VR107 VR106 VR105 VR104 VR103 VR102 VR101

SBL ch SBR ch SL ch SR ch C ch FL ch FR ch

Audio Section

The adjustment volume and connection terminal of 1U-3806-1
(POWER AMP Unit)P.W.B. under 1U-3802-2 (P.SUPPLY-1
Unit)P.W.B..

Insert an adjustment driver / connection terminal from an adjust-
ment aperture of 1U-3802-2(P.SUPPLY-1 Unit)P.W.B..

9

AVR-3808CI / AVR-3808 / AVC-3808

MULTI TROUBLE SHOOTING
1. POWER
1.1. Power not turn on

Power not turn on

YES YES

Are there any incomplete con-
Is there a short circuit between Correct the short circuit
Is the ON/STANDBY indicator NO nections in the connectors con- NO NO NO NO NO
the speaker terminals and the between the speaker and the
on the front panel flashing red? necting between the various
ground? ground.
circuit boards?

YES YES YES YES

Check for damage in the power
Connect the connectors prop-
YES amplifier circuitry parts and YES
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 IC807 to NO NO NO
NO plied from the 1U-3817 board NO NO
the POWER switch is turned off from the 1U-3817 board to the the primary circuitry and
(CW122 pins 6 and 7) to the
then back on? microprocessor (CW122) is replace any defective parts.
microprocessor?
unplugged?
YES YES YES
YES YES YES

Check the primary circuitry Check the circuitry and parts
Check the 1U-3804-2 board's
parts including the POWER from CW122 on the 1U-3817
microprocessor periphery cir-
switch (for poor contacts, etc.), board to the microprocessor for
cuitry and replace any defec-
and replace any defective damage and short-circuits, and
tive parts.
parts. replace any defective parts.

1.2. Fuse is blown

Fuse is blown
YES YES YES
YES YES YES

Check for short circuits in the Check for short circuits in the
Check for leaks or short circuits rectifier diodes and circuitry of power stabilizer unit's regula-
in the primary side parts, and the secondary side rectifying tor output terminal and the
replace any defective parts. circuits, and replace any defec- ground, and replace any defec-
tive parts. tive parts. YES YES YES

YES YES YES

After repairing, also replace the fuse.

10

AVR-3808CI / AVR-3808 / AVC-3808

2. Analog video
2.1. MONITOR OUT (CVBS) Output NG

MONITOR OUT (CVBS) Output NG When checking operation, select
DVD for the function.
(COMPONENT1 input)

Checking the video convert ON/OFF settings

Video convert ON Video convert OFF

Input Input Input Input Input Input
CVBS S COMPONENT CVBS S COMPONENT

A B Interlace D No output No output
or
Progressive

Interlace Progressive
C no output

11

AVR-3808CI / AVR-3808 / AVC-3808

A
Input
CVBS

Check 5VA and +5VD.
+5VA : CW082-3,4pin NG To troubleshooting 1.1 Power not turn NG
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

Check input/output of analog SW. Check analog SW settings.
NG NG Check IC505, IC508 and CW132 NG NG
Input : IC420-13pin IC420-9,10,11pin : L(0V)
soldering, or DIGITAL UNIT flaw.
Output : IC420-3pin IC420-6pi : L(0V)

OK OK

OK Check soldering of IC402. OK

Check input/output of AMP.
NG Check soldering of IC409 and NG
Input : IC409-5pin
surrounding parts.
Output : IC409-7pin

OK OK

Check output to 1U-3799 DIGITAL UNIT. NG NG
Check soldering of CW113.
Output V : CW113-5pin

OK OK

1U-3800-2 VIDEO CONNECT UNIT
Check input of video driver. NG NG
Check CX093 soldering, or digital unit
Input Y : IC703-8pin
flaw.
Input C : IC703-2pin

OK OK

Check output of video driver. NG NG
Check soldering of IC703.
Output V : IC703-27pin

OK OK

NG NG Check IC506 and CW132 soldering, or NG NG
Input : IC419-14pin IC419-10pin : H(+5V)
DIGITAL UNIT flaw.
Output : IC419-13pin IC419-9pin : L(0V)

OK OK


NG NG
Input : IC405-5pin Check soldering of IC405.
Output : IC405-7pin

OK OK

Check cable between main unit and
monitor or Check monitor.

Unless specified, 1U-3800-1 A.VIDEO UNIT part.

12

AVR-3808CI / AVR-3808 / AVC-3808

B
Input
S

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

Input Y : IC411-13pin IC411-9,10,11pin : L(0V)
Input C : IC417-13pin IC411-6pin : L(0V)
Output Y : IC411-3pin IC417-9,10,11pin : L(0V)
Output C : IC417-3pin IC417-6pin : L(0V)

OK OK

OK Check soldering of IC411 and IC417. OK

NG Check soldering of IC407, IC408 and NG
surrounding parts.
Output Y : IC407-7pin
Output C : IC408-7pin

OK OK

Check output to 1U-3799 DIGITAL UNIT.
NG NG
Output Y : CW113-3pin Check soldering of CW113.
Output C : CW113-1pin

OK OK

1U-3800-2 VIDEO CONNECT UNIT.
Check input of video driver NG NG
Check CX093 soldering, or
DIGITAL UNIT flaw.

OK OK

Check output of video driver. NG NG
Output V : IC703-27pin

OK OK

DIGITAL UNIT flaw.

OK OK


NG NG
Output : IC405-7pin

OK OK



13

AVR-3808CI / AVR-3808 / AVC-3808

C
Input
COMPONENT

Check 5VA, +5VD and +9VA.
+5VA : CW082-3,4pin
NG To troubleshooting 1.1 Power not turn
-5VA : CW082-1,2pin NG
on.
+5VD : CW132-1pin
+9VA : CW082-8pin

OK OK
Check input/output of COMPONENT
selector.
Input Cb : IC601-2pin NG Check IC601 and CW092 NG
Input Cr : IC601-4pin soldering, or DIGITAL UNIT flaw.
Output Cb : IC601-32pin
Output Cr : IC601-30pin
OK
OK
Input Cb : IC602-3pin NG NG
NG Check AMP settings. NG Check IC508 and CW132 soldering, or
Input Cr : IC602-5pin
IC602-7pin : H(5V) DIGITAL UNIT flaw.
OK
OK
OK
Check soldering of IC602 and
OK
surrounding parts.

NG
Output Y : CW112-5pin NG
Output Cb : CW112-3pin
Output Cr : CW112-1pin

NG
Check input of video driver NG
Check CX093 soldering,
or DIGITAL UNIT flaw.
Input C : IC703-2pin OK

OK NG

Check output of video driver. NG
Output V : IC703-27pin OK

OK NG NG
NG NG Check IC506 and CW132 soldering, or
DIGITAL UNIT flaw.
Output : IC419-13pin IC419-9pin : L(0V) OK

OK OK

OK Check soldering of IC419.

NG
NG
Output : IC405-7pin OK

OK

14

AVR-3808CI / AVR-3808 / AVC-3808

D
Input
CVBS

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK


OK OK


NG NG
Output : IC409-7pin

OK OK

NG NG NG NG
Input : IC419-14pin IC419-10pin : L(0V) Check soldering of IC506 and CW132.
Output : IC419-13pin IC419-9pin : H(+5V)

OK OK


NG NG
Output : IC405-7pin

OK OK



15

AVR-3808CI / AVR-3808 / AVC-3808

2.2. ZONE2 MONITOR OUT (CVBS) Output NG
(aside from AVC-3808 JP model)

ZONE2 MONITOR OUT (CVBS) Output NG. When checking operation, select

Check ZONE2 is power on. NG Turn on ZONE2 and check again.

OK

Input Input Input
CVBS S COMPONENT

E F No output

16

AVR-3808CI / AVR-3808 / AVC-3808

E
Input
CVBS

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

NG NG Check IC505, IC508 and CW132 solder- NG NG
ing, or DIGITAL UNIT flaw.

OK OK


NG NG
Input : IC409-3pin Check soldering of IC409C.
Output : IC409-1pin

OK OK

Check input/output to OSD driver input
NG NG
signal selector. NG Check analog SW settings. NG Check IC508 and CW132 soldering, or
Input : IC512-5pin IC512-9,10,11pin : L(0V) DIGITAL UNIT flaw.
Output : IC512-4pin
OK
OK
OK

NG
Check input/output of OSD driver.
NG Check soldering of IC510 and
Input : IC510-15pin
surrounding parts.
Output : IC510-13pin
OK
OK
NG
Check input/output of buffer AMP.
NG
Output : IC406-1pin
OK
OK
NG NG
Input : IC416-2pin IC416-10pin : L(0V)
DIGITAL UNIT flaw.
OK
OK
OK

NG
NG
Output : IC405-1pin
OK
OK


17

AVR-3808CI / AVR-3808 / AVC-3808

F
Input
S

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK
Check input/output of analog SW.
Input Y : IC412-13pin Check analog SW settings.
NG NG Check IC505, IC508 and CW132
Input C : IC418-13pin IC412-9,10,11pin : L(0V) NG NG

OK
OK
OK Check soldering of IC412 and IC418.
OK

NG Check soldering of IC407, IC408 and
surrounding parts. NG

OK
OK
Check input/output of MIX AMP.
NG
Input Y : IC410-3pin Check soldering of IC410.
Input C : IC410-1pin NG

OK
Check input/output to OSD driver input OK
signal selector. NG Check analog SW settings. NG Check IC508 and CW132 soldering, or
Input : IC512-3pin IC512-9,10,11pin : H(+5V) DIGITAL UNIT flaw. NG NG
Output : IC512-4pin

OK OK
OK

Check input/output of OSD driver.
Input : IC510-15pin NG
surrounding parts.

OK
OK
Check input/output of buffer AMP.
NG
NG
Output : IC406-1pin

OK
OK
Input : IC416-2pin IC416-10pin : L(0V)
DIGITAL UNIT flaw. NG NG

OK
OK
OK

NG
Output : IC405-1pin NG

OK
Check cable between main unit and OK


18

AVR-3808CI / AVR-3808 / AVC-3808

2.3. VCR/DVR MONITOR OUT(CVBS) Output NG

VCR/DVR MONITOR OUT(CVBS) Output NG. When checking operation, select

Input Input Input
CVBS S COMPONENT

VCR : G No output No output
DVR : H

19

AVR-3808CI / AVR-3808 / AVC-3808

G
Input
CVBS

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK


OK OK


NG NG
Output : IC409-1pin

OK OK

NG Check analog SW settings. NG Check IC505 and CW132 soldering, or NG NG
Input : IC413-1pin
IC413-9,10,11pin : H(5V) DIGITAL UNIT flaw.

OK OK


NG NG
Output : IC403-7pin

OK OK



20

AVR-3808CI / AVR-3808 / AVC-3808

H
Input
CVBS

Check 5VA +and 5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK


OK OK


NG NG
Output : IC409-1pin

OK OK

Input : IC414-1pin
IC414-9,10,11pin : H(5V) DIGITAL UNIT flaw.

OK OK


NG NG
Output : IC403-1pin

OK OK



21

AVR-3808CI / AVR-3808 / AVC-3808

2.4. MONITOR OUT (S) Output NG

MONITOR OUT (S) Output NG When checking operation, select
(COMPONENT1 Input)

Checking the video convert ON/OFF settings



I J Interlace No output L No output
or
Progressive

Interlace Progressive
K No output

22

AVR-3808CI / AVR-3808 / AVC-3808

I
Input
CVBS

Check 5VA and +5VD.
To troubleshooting 1.1 Power not turn NG
+5VA : CW082-3,4pin NG
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin
OK
OK
Check input/output of analog SW. Check analog SW settings. NG NG
Output : IC420-3pin IC420-6pi : L(0V)
OK
OK
OK

Check input/output of AMP. NG
Input : IC409-5pin
surrounding parts.
Output : IC409-7pin
OK
OK
NG
Check output to 1U-3799 DIGITAL UNIT. NG
OK
OK
1U-3800-2 VIDEO CONNECT UNIT NG
Check input of video driver. NG
Check CX093 soldering, or DIGITAL
UNIT flaw.
OK
OK
Check output of video driver. NG
NG
Output Y : IC703-25pin Check soldering of IC703.
OK
OK
Input Y : IC415-5pin Check analog SW settings. NG NG
Input C : IC415-14pin IC415-10pin : H(+5V)
DIGITAL UNIT flaw.
Output Y : IC415-3pin IC415-9pin : L(0V)
OK
OK
OK

Input Y: IC404-3pin NG
NG
Input C: IC404-5pin Check soldering of IC404.
OK
OK


23

AVR-3808CI / AVR-3808 / AVC-3808

J
Input
S

Check VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

Input C : IC417-13pin IC411-6pin : L0V)

OK OK


NG Check soldering of IC407,IC408 and NG
surrounding parts.

OK OK

NG NG
Output Y : CW113-3pin Check soldering of CW113.
Output C : CW113-1pin

OK OK

Check input of video driver NG NG
UNIT flaw.

OK OK

Check output of video driver.
NG NG

OK OK

DIGITAL UNIT flaw.

OK OK


NG NG
Input C : IC404-5pin Check soldering of IC404.

OK OK



24

AVR-3808CI / AVR-3808 / AVC-3808

K
Input
COMPONENT

+5VA : CW082-3,4pin
NG To troubleshooting 1.1 Power not turn NG
-5VA : CW082-1,2pin
on.
+5VD : CW132-1pin
+9VA : CW082-8pin

OK OK
selector.
NG
Input Cb : IC601-2pin NG Check IC601 and CW092 soldering,
Input Cr : IC601-4pin or DIGITAL UNIT flawCW092.
OK
OK
NG NG
Input Cb : IC602-3pin
OK
OK OK
Check soldering of IC602 and
OK
surrounding parts.
NG
Output Y : CW112-5pin NG
Output Cb : CW112-3pin
OK
Output Cr : CW112-1pin

OK NG
Check input of video driver NG
UNIT flaw. OK

OK NG
NG
OK

OK
NG NG
DIGITAL UNIT flaw.
OK

OK OK


NG
NG
OK

OK
monitor or Check monitor .


25

AVR-3808CI / AVR-3808 / AVC-3808

L
Input
S

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

Output C : IC417-3pin IC417-6pin : L0V)

OK OK

OK Check soldering of IC411and IC417. OK

surrounding parts.

OK OK

DIGITAL UNIT flaw.
Output Y : IC415-3pin IC415-9pin : H(+5V)

OK OK


NG NG

OK OK



26

AVR-3808CI / AVR-3808 / AVC-3808

2.5. VCR/DVR MONITOR OUT(S) Output NG

VCR/DVR MONITOR OUT(S) Output NG. When checking operation, select

Input Input Input
CVBS S COMPONENT

No output VCR : M No output
DVR : N

27

AVR-3808CI / AVR-3808 / AVC-3808

M
Input
S

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK


OK OK


surrounding parts.

OK OK

IC413-9,10,11pin : H(+5V) DIGITAL UNIT flaw.

OK OK


NG NG

OK OK



28

AVR-3808CI / AVR-3808 / AVC-3808

N
Input
S

Check 5VA and +5VD.
-5VA : CW082-1,2pin on.
+5VD : CW132-1pin

OK OK

NG NG Check IC505,IC508 and CW132 NG NG

OK OK


surrounding parts.

OK OK

IC414-9,10,11pin : H(+5V) DIGITAL UNIT flaw.

OK OK


NG NG

OK OK



29

AVR-3808CI / AVR-3808 / AVC-3808

COMPONENT OUT 1,2 Output NG. When checking operation, select
(COMPONENT1 Input)

Checking the video convert ON/OFF settings.



O P Q No output No output R

30

AVR-3808CI / AVR-3808 / AVC-3808

O
Input
CVBS

+5VA : CW082-3,4pin NG
NG To troubleshooting 1.1 Power not turn
-5VA : CW082-1,2pin
on.
+5VD : CW132-1pin
+9VA : CW082-8pin

OK OK

Check input/output of analog SW. Check analog SW settings. NG NG

OK OK


Check input/output of AMP. NG
Input : IC409-5pin
surrounding parts.
Output : IC409-7pin

OK OK

Check output to1U-3799 DIGITAL UNIT. NG NG

OK OK

Check input of video driver 1U-3800-2 VIDEO CONNECT UNIT NG
NG
Input Y : IC703-10in Check CX093 soldering, or DIGITAL
Input Cb : IC703-14pin UNIT flaw.

OK OK

Output Y : IC703-23pin NG NG

OK OK

selector.
Input Y : IC601-6pin NG
Input Cb : IC601-8pin NG Check IC601 and CW092 soldering,
Input Cr : IC601-10pin or DIGITAL UNIT flaw.
OK
OK
Input Y : IC603-1pin NG NG
Input Cb : IC603-3pin
OK
OK OK



31

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Denon+avc 3808,+avr-3808,+avr-3808 ci

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