Denon DHT-390XP User manual

D&M Holdings Inc.
SERVICE MANUAL
e
e
MODEL JP E3 E2 EK K2A E1C E1K EUT
DHT-390XP
P P
5.1CH HOME THEATER SYSTEM
MODEL JP E3 E2 EK K2A E1C E1K EUT
AVR-390
sP
AV SURROUND RECEIVER
5.1CH HOME THEATER SYSTEM (DHT-390XP) consists of AV SURROUND
RECEIVER (AVR-390) and SPEAKER SYSTEM (SYS-390HT)
Ver. 3
•Some illustrations using in this service manual are slightly different from the actual set.
•Please use this service manual with referring to the operating instructions without fail.
•For purposes of improvement, specications and design are subject to change without notice.
S0032-0V03DM/DG1002
Please refer to the
MODIFICATION NOTICE.

2
DHT-390XP
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 he 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. be sure to heed these causions and the cautions
indicated in the handling instructions.
Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching
internal 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,
unplugging the power cord when replacing parts, etc.
(2) Tere are high voltage parts inside. Handle with extra
care when the set is energized.
Caution concerning disassembly and
assembly!
Through 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 ngers
are moved across them. Use gloves to protect your hands.
Only use designated parts!
The set's parts have specific safety properties (fire
resistance, voltage resistance, etc.). For replacement parts,
be sure to use parts which have the same poroperties. In
particular, for the important safety parts that are marked
z on wiring diagrams and parts lists, be sure to use the
designated parts.
Be sure to mount parts and arrange the wires
as they were originally!
For safety seasons, some parts use tape, tubes or other
insulating materials, and some parts are mounted away
from the surface of printed circuit boards. Care is also
taken with the positions of the wores omsode amd 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
disconnected for servicing have been put back in their
original positions, inspect that no parts around the area that
has been serviced have been negatively affected, conduct
an inslation 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.
Using a 500V insulation resistance tester, check that the
inplug and the externally exposed metal parts (antenna
terminal, headphones terminal, input terminal, etc.) is
1MΩ or greater. If it is less, the set must be inspected and
repaired.
◎
Many of the electric and structural parts used in the set
have special safety properties. In most cases these
properties are difficult to distinguish by sight, and using
replacement parts with higher ratings (rated power and
withstand voltage) does not necessarily guarantee that
safety performance will be poreserved. Parts with safety
properties are indicated as shown below on the wiring
diagrams and parts lists is this service manual. Be sure to
replace them with parts with the designated part number.
(1) Schematic diagrams ......Indicated by the z mark.
(2) Parts lists ......Indicated by the zmark.
Using parts other than the designated
parts could result in electric shock, res
or other dangerous situations.
Concerning important safety
parts
CAUTION
AVR-390

3
DHT-390XP
dimension
AVR-390
AVR-390

4
DHT-390XP
dsW-390
270
427
395
20
200
530
30
185
150
55
50
400
φ88

5
DHT-390XP
sC-F390
125
130
155
320

6
DHT-390XP
sC-C390
155
125
130
320
sC-R390
155
180
130
125

7
DHT-390XP
WIRE ARRANGEMENT
If wire bundles are untied or moved to perform adjustment or parts replacement etc., be sure to rearrange them neatly
asthey were originally bundled or placed afterward.
Otherwise, incorrect arrangement can be a cause of noisegeneration.
Wire arrangement viewed from the top
Back Panel side
Front Panel side
AVR-390

8
DHT-390XP AVR-390
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 ASS
Y
CHASSIS BAC
K
HEATSINK MAIN ASS
Y
Refer to "DISASSEMBLY 1.PANEL FRONT ASSY" Refer to "DISASSEMBLY 5.CHASSIS BACK" Refer to "DISASSEMBLY 2.HEATSINK
and "EXPLODED VIEW" and "EXPLODED VIEW" MAIN ASSY" and "EXPLODED VIEW"
PCB ASSY ST-BY PCB ASSY AMP
(Ref. No. of EXPLODED VIEW : 11) (Ref. No. of EXPLODED VIEW : 20)
PCB ASSY TACT-SW
(Ref. No. of EXPLODED VIEW : 12)
PCB ASSY FRONT
PCB ASSY DS
P
PCB ASSY HDMI
(Ref. No. of EXPLODED VIEW : 13) Refer to "DISASSEMBLY 6.PCB ASSY DSP" Refer to "DISASSEMBLY 3.PCB ASSY HDMI"
PCB ASSY H/P and "EXPLODED VIEW" and "EXPLODED VIEW"
(Ref. No. of EXPLODED VIEW : 14) PCB ASSY DSP PCB ASSY HDMI
PCB ASSY ENCORDER (Ref. No. of EXPLODED VIEW : 32) (Ref. No. of EXPLODED VIEW : 33)
(Ref. No. of EXPLODED VIEW : 17)
PCB ASSY VIDE
O
POWER TRANS
Refer to "DISASSEMBLY 7.PCB ASSY VIDEO" Refer to "DISASSEMBLY 4.POWER TRANS"
and "EXPLODED VIEW" and "EXPLODED VIEW"
PCB ASSY VIDEO POWER TRANS
(Ref. No. of EXPLODED VIEW : 31) (Ref. No. of EXPLODED VIEW : 28)
PCB ASSY POWE
R
Refer to "DISASSEMBLY 8.PCB ASSY POWER"
and "EXPLODED VIEW"
PCB ASSY POWER
(Ref. No. of EXPLODED VIEW : 29)
PCB ASSY MAIN
Refer to "DISASSEMBLY 9.PCB ASSY MAIN"
and "EXPLODED VIEW"
PCB ASSY MAIN
(Ref. No. of EXPLODED VIEW : 30)
Picture A
Picture F
Picture G
Picture B
( Bottom view )
Picture C
The viewpoint of each photograph
(photography direction)
[ Top view ]
Picture D
Picture E

9
DHT-390XP AVR-390
1. PANEL FRONT ASSY
(1) Disconnect the connector wires and FFC Cable.
(2) Remove the screws.
Proceeding : CABINET TOP →PANEL FRONT ASSY
Top view
FFC Cable
CP701
Cord holder : Loose
CP701
Picture D
Cord holder : Loose
CP104
cut
Bottom view

10
DHT-390XP AVR-390
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in PANEL FRONT ASSY.
2. HEATSINK MAIN ASSY
(1) Disconnect the connector wires and FFC Cable.
Picture C
Picture D
Proceeding : CABINET TOP →HEATSINK MAIN ASSY
Top view
CP110 CP111 CP701 CP107
Cord holder : Loose Cord holder : Loose
FFC Cable

11
DHT-390XP AVR-390
(2) Remove the screws.
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in HEATSINK MAIN ASSY.
Bottom view
Picture C
Cord holder : Loose
Picture D
Cord holder : Loose

12
DHT-390XP AVR-390
3. PCB ASSY HDMI
(1) Disconnect the connector wire and remove the screws.
4. POWER TRANS
(1) Disconnect the connector wires.
Proceeding : CABINET TOP →PCB ASSY HDMI
Picture F
CP01
Proceeding : CABINET TOP →POWER TRANS
Top view
CP102
CP701
CP101 CP305
CORD HOLDER : Loose
cut

13
DHT-390XP AVR-390
5. CHASSIS BACK
(1) Remove the screws.
6. PCB ASSY DSP
(1) Disconnect the Board to board.
7. PCB ASSY VIDEO
(1) Disconnect the Board to board.
Proceeding : CABINET TOP →CHASSIS BACK
Picture A
Proceeding : CABINET TOP →CHASSIS BACK →PCB ASSY DSP
Top view
Board to board
DSP Board
Proceeding : CABINET TOP →CHASSIS BACK →PCB ASSY VIDEO
Top view
Board to board
VIDEO Board

14
DHT-390XP AVR-390
8. PCB ASSY POWER
(1) Disconnect the connector wires and remove the screws.
9. PCB ASSY MAIN
Please refer to "EXPLODED VIEW" for the disassembly method of PCB ASSY MAIN.
Proceeding : CABINET TOP →CHASSIS BACK →PCB ASSY POWER
Top view
CP103 POWER Board
Proceeding : CABINET TOP →CHASSIS BACK →PCB ASSY MAIN

15
DHT-390XP AVR-390
CAUTION IN SERVICING
1. Initializing
Initialization should be performed when the µcom, peripheral parts of µcom, MAIN P.W.B. unit and Mecha are replaced.
1. Plug the power cord into a power outlet.
2. "ON/STANDBY LED" is red lighting.
3. Press the “ON/STANDBY” button while pressing the “MEMORY/ENTER” button.
4. "CLEAR" is displayed on the FL tube.
＊The microprocessor will be initialized.
2. Version display
1. Plug the power cord into a power outlet.
2. "ON/STANDBY LED" is red lighting.
3. Press the “ON/STANDBY” button while pressing the “SETUP” button.
4. The version of Main μcom is displayed on FL tube.
Version of Main μcom : “M:XXXX-X”
5. Press the "STATUS" or “SETUP” button, version of DSP is displayed on the FL tube.
Version of DSP : “DSP:XXXX”
6. Press the "STATUS" or “SETUP” button, the FL tube lights all.
Note:・If step 4 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 restoring after the initialization.
ON/STANDBY STATUS MEMORY/ENTER SETUP
The display switches each time the "STATUS" or “SETUP” button is pressed.
Version of Main μcom Version of DSP FL tube lights all

16
DHT-390XP
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VR213FL,FR,C,SL,SR,onMainAmp.Unitatfullycounterclockwise(c)position.
(2)ConnectDCVoltmetertotestpoints(FRONT-Lch:TP201FL,FRONT-Rch:TP201FR,CENTERch:TP201C,
SURROUND-Lch:TP201SL,SURROUND-Rch:TP201SR).
(3)ConnectpowercordtoACLine,andturnpowerswitch"ON".
(4)Presetting.
MASTERVOLUME :"---"counterclockwise(cmin.)
SPEAKER (Speaker terminal) : No load
 (Donotconnectspeaker,dummyresistor,etc.)
FUNCTION :EXTIN
(5) Within 2 minutes after the power on, turn VR101 clockwise (x)toadjusttheTESTPOINTvoltageto
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.
VR213FR
VR213SL VR213FL VR213C VR213SR
S Lch F Lch
TP201FL
TP201SL TP201FR TP201C TP201SR
C ch F Rch S Rch
DC Voltmeter
MAIN UNIT
AMP. UNIT
AVR-390

17
DHT-390XP AVR-390
TROUBLE SHOOTING
1. POWER
1.1. Power not turn on
1.2. Fuse is blown
Power not turn on
Is the ON/STANDBY indica-
tor on the front panel flashing
red?
YES
Are there any incomplete
connections in the connec-
tors connecting between the
various circuit boards?
NO
Is there a short circuit
between the speaker termi-
nals and the ground?
YES
Correct the short circuit
between the speaker and
the ground.
YES NO
NO
Connect the connectors
properly.
Check for damage in the
power amplifier circuitry parts
and replace any defective
parts.
Is the fuse blown?
NO
Refer to Fuse is blown
YES
Does the power turn on when
the POWER switch is turned
off then back on?
NO
Is a DC 3.3V voltage being
supplied from the POWER
B’d (CP103 pins 3) to the
microprocessor?
NO
Is a DC 3.3V voltage output
when the cord supplying the
power from the SUPPLY B’d
to the microprocessor
(CP103) is unplugged?
NO
Check the parts from IC300
to the primary circuitry and
replace any defective parts.
YES YES YES
Check the primary circuitry
parts including the POWER
switch (for poor contacts,
etc.), and replace any defec-
tive parts.
Check the microprocessor
periphery circuitry and
replace any defective parts.
Check the circuitry and parts
from CP103 on the SUPPLY
B’d to the microprocessor for
damage and short-circuits,
and replace any defective
parts.
Fuse is blown
Check for leaks or short cir-
cuits in the primary side
parts, and replace any
defective parts.
Check for short circuits in
the rectifier diodes and cir-
cuitry of the secondary side
rectifying circuits, and
replace any defective parts.
Check for short circuits in
the power stabilizer unit's
regulator output terminal
and the ground, and replace
any defective parts.
After repairing, also replace the fuse.

18
DHT-390XP AVR-390
2. Analog video
2.1. AVR-390
※Unless specified, VIDEO UNIT part.
MONITOR OUT (CVBS/S) Output NG ※When checking operation, select
DVD for the function.
Input
CVBS
Input
S
A
A
Input
CVBS/S
Check 12V, 9V.
12V : CN201-4pin
9V : CN201-6pin
NG
To troubleshooting 1.1 Power not turn
on.
OK
Check output
Output V : C258 +side
Output Y : C259 +side
Output C : C262 +side
NG
Check input of input selector and
surrounding circuitry soldering.
Input : IC202,IC203,IC204
OK
Check cable between main unit
and monitor or Check monitor.

19
DHT-390XP AVR-390
3. HDMI/DVI
3.1. No picture or sound is output
No picture or sound is output
YES
Check the HDMI/DVI cable
connection
YES
Is the HDMI/DVI cable properly
connected?
NO
There may be a problem with the HDMI/
DVI cable. Check the connection.
YES
Are you using an HDMI/DVI selector,
repeater or a device for improving
picture quality?
YES
Disconnect everything and connect only
the HDMI/DVI cable to check.
NO
Are you using a certified HDMI cable
(one with the HDMI stamp)?
NO
Use a certified HDMI cable (one with the
HDMI stamp).
YES
Are you using an HDMI/DVI cable less
than 5 meters in length?
NO
Replace the HDMI/DVI cable with one
that is less than 5 meters in length (2
meters recommended) to check.
YES
Are the picture and sound output when
another HDMI/DVI cable is used?
YES
The HDMI/DVI cable is defective.
NO
Checking the DVD player
YES
Is the DVD player's HDMI output setting
correct?
YES
Check the HDMI output setting, referring
to the DVD player's operating
instructions.
YES
Are the picture and sound TV output
when the DVD player's resolution is
changed?
YES
Set the DVD player's output resolution
to a resolution with which the TV is
compatible.
NO
Is the DVD player HDCP-compatible?
YES
The DVD player may not be compatible
with HDCP TV. Ask the DVD player's
manufacturer.
NO
Are the picture and sound output when
a different DVD player is used?
YES
The DVD player is defective.
NO

20
DHT-390XP AVR-390
Check the TV
Is the TV HDCP-compatible?
NO
Use an HDCP-compatible TV. PC
TVs cannot be used.
YES
Is the TV compatible with resolutions of 1080P?
NO
If the TV is not compatible with
resolutions of 1080P, no picture will
be output, even if the DVD player's
resolution is set to 1080P.
YES
Is the TV's input set to HDMI?
NO
Check the TV's input setting,
referring to the TV's operating
instructions.
YES
Are the picture and sound output when a different TV is used?
NO
The TV is defective.
YES
Check the set (AVR-390)
Is the set's input set to HDMI?
NO
Check the set's input setting,
referring to the set's operating
instructions.
YES YES
The set does not recognize the TV.
Is IC01 pin 76 "H" (3V-5V)? With the TV
connected, check the voltage of the IC
on the side on which the TV is
connected.
NO
The pattern and circuit from the HDMI
connector (JACK03) to the IC (IC01)
is defective.
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 "NO".
NO
The DVD player does not recognize
the connection with the set.
Is the HDMI connector (JACK01/
JACK02) pin 19 "H" (5V)? With the DVD
player connected, check the voltage of
the HDMI connector for the input on the
side on which the DVD player is
connected.
NO
The pattern and circuit from the
HDMI connector (JACK01/
JACK02) to the Main μcom is
defective.
YES YES
The HDMI output circuitry is defective.
(IC01 and surrounding circuitry)