For purposes of improvement, specifi cations 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.
•
e
D&M Holdings Inc.
S0141-0V03DM/DG1010
Copyright 2010 D&M Holdings Inc. All rights reserved.
WARNING: Violators will be prosecuted to the maximum extent possible.
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.
Be sure to test for leakage current with the AC plug in both polarities, in addition, in each power ON, OFF and STANDBY
mode, if applicable.
CAUTION
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. 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 fi 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.
CAUTION
Concerning important safety
parts
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 z mark.
Using parts other than the designated
parts could result in electric shock, fi res
or other dangerous situations.
2
NOTE FOR SCHEMATIC DIAGRAM
WARNING:
Parts marked with this symbol z have critical characteristics. Use ONLY replacement parts recommended by the manufacture
CAUTION:
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.
WARNING:
DO NOT return the unit to the customer until the problem is located and corrected.
NOTICE:
ALL RESISTANCE VALUES IN OHM. k=1,000 OHM / M=1,000,000 OHM
ALL CAPACITANCE VALUES IN MICRO FARAD. P=MICRO-MICRO FARAD EACH VOLTAGE AND CURRENT ARE MEASURED AT NO SIGNAL
INPUT CONDITION. CIRCUIT AND PARTS ARE SUBJECT TO CHANGE WITHOUT PRIOR NOTICE.
r.
NOTE FOR PARTS LIST
Parts for which "nsp" is indicated on this table cannot be supplied.
1.
When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-supplying.
2.
3.
Ordering part without stating its part number can not be supplied.
4.
Part indicated with the mark "★" is not illustrated in the exploded view.
5.
Not including General-purpose Carbon Film Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
6.
Not including General-purpose Carbon Chip Resistor in the P.W.Board parts list. (Refer to the Schematic Diagram for those parts.)
WARNING:
● Resistors
Ex.:RN
* Resistance
Capacitors
●
Ex.:CE
* Capacity (electrolyte only)
* Capacity (except electrolyte)
・ When the dielectric strength is indicated in AC,"AC" is included after the dieelectric strength value.
Parts marked with this symbol z have critical characteristics. Use ONLY replacement parts recommended by the manufacturer.
14K
Type
RD : Carbon
RC : Composition
RS : Metal oxide film
RW: winding
RN : Metal film
RK : Metal mixture
: Units: ohm
Type
CE : Aluminum foil
electrolytic
CA : Aluminium solid
electrolytic
CS : Tantalum electrolytic
CQ : Film
CK : Ceramic
CC : Ceramic
CP : Oil
CM: Mica
CF : Metallized
CH : Metallized
・ Units:μF.
・ Units:pF
Shape
and performance
2
Indicates number of zeros after effective number.
2-digit effective number.
1-digit effective number.
2-digit effective number, decimal point indicated by R.
04W
Shape
and performance
2
Indicates number of zeros after effective number.
2-digit effective number.
2
Indicates number of zeros after efective number. (More than 2)
2-digit effective number.
2E
Power
2B : 1/8 W
2E : 1/4 W
2H : 1/2 W
3A : 1 W
3D : 2 W
3F : 3 W
3H : 5 W
1800ohm=1.8kohm1 8
1.2ohm1 R 2
1H
Dielectric
strength
0J : 6.3 V
1A : 10 V
1C : 16 V
1E : 25 V
1V : 35 V
1H : 50 V
2A : 100 V
2B : 125 V
2C : 160 V
2D : 200 V
2E : 250 V
2H : 500 V
2J : 630 V
2200μF2 2
2200pF=0.0022μF2 2
182
Resistance
F:±1%
G:±2%
J:±5%
K:±10%
M:±20%
3R2
CapacityMAllowable
G
Allowable
error
P : Pulse-resistant type
NL : Low noise type
NB : Non-burning type
FR : Fuse-resistor
F : Lead wire forming
error
F:±1%
G:±2%
J:±5%
K:±10%
M:±20%
Z:±80%
: - 20%
P : +100%
C:±0.25pF
D:±0.5pF
= : Others
FR
Others
BP
Others
HS : High stability type
BP : Non-polar type
HR : Ripple-resistant type
DL : For change and discharge
HF : For assuring high requency
U : UL part
C : CSA part
W : UL-CSA part
F : Lead wire forming
2
・ Units:μF.
1
・ Units:pF
2.2μF2 R
1-digit effective number.
2-digit effective number, decimal point indicated by R
220pF2 2
Indicates number of zeros after effective numver. (0 or 1)
2-digit effective number.
3
SYSTEM CONFIGURATION
• AVR-1311
• AVR-391
• DHT-1311XP (AVR-1311 + SYS-391HT)
• DHT-391XP (AVR-391 + SYS-391HT)
SYS-391HT : Refer to page 104-113 for the service manual.
TECHNICAL SPECIFICATIONS
n Audio Section
• Power amplifi er
Rated output :
Front :
75 W + 75 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
110 W + 110 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Center :
75 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
110 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Surround :
75 W + 75 W (8 Ω, 20 Hz – 20 kHz with 0.08 % T.H.D.)
110 W + 110 W (6 Ω, 1 kHz with 0.7 % T.H.D.)
Output connectors : 6 – 16 Ω
• Analog
Input sensitivity/Input impedance : 200 mV/47 kΩ
Frequency response: 10 Hz – 100 kHz — +1, –3 dB (DIRECT mode)
S/N : 98 dB (IHF–A weighted, DIRECT mode)
n Video Section
• Standard video connectors
Input/output level and impedance : 1 Vp-p, 75 Ω
Frequency response : 5 Hz – 10 MHz — +1, –3 dB
• Color component video connector
Input/output level and impedance :
Y (brightness) signal — 1 Vp-p, 75 Ω
B / CB signal — 0.7 Vp-p, 75 Ω
P
R / CR signal — 0.7 Vp-p, 75 Ω
P
Frequency response : 5 Hz – 10 MHz — +1, –3 dB
SYS-391HT
DSW-391SC-C391SC-F391(x2)SC-R391(x2)
n Tuner section
[FM](Note: μV at 75 Ω, 0 dBf = 1 x 10
Receiving Range (for 391E3,391E3B) :
[FM] 87.5 MHz – 107.9 MHz
Receiving Range (for 1311E2,1311E1C,391EA) :
[FM] 87.5 MHz – 108.0 MHz
Usable Sensitivity :
[FM]1.2 μV (12.8 dBf)
50 dB Quieting Sensitivity :
[FM]MONO 2.8 μV (20.2 dBf)
S/N (IHF-A) :
[FM]MONO 70 dB
STEREO 67 dB
Total harmonic Distortion (at 1 kHz) :
[FM]MONO 0.7 %
STEREO 1.0 %
[AM]520 kHz – 1710 kHz
[AM]522 kHz – 1611 kHz
[AM]18 μV
n General
Power supply (for 391E3,391E3B) : AC 120 V, 60 Hz(for 1311E2,391EA) : AC 230 V, 50 Hz (for 1311E1C) : AC 220 V, 50 Hz
Power consumption :
330 W
Less than 0.5 W (Standby)
Maximum external dimensions :
435 (W) x 166 (H) x 381 (D) mm
Weight : 9.2 kg
n Remote Control Unit (RC-1149)
Batteries : R03/AAA Type (two batteries)
Maximum external dimensions : 50 (W) x 211 (H) x 22 (D) mm
Weight : 110 g (including batteries)
–15
W)
s
s
4
DIMENSION
22.2
245.0
43.5
30.030.5
86.0
340.0
435.0
248.0
43.5
20.7
146.5
166.5
20.0
The illustration is AVR-1311 model.
338.5
381.4
5
CAUTION IN SERVICING
Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed when the μcom, peripheral parts of μcom, and Digital
P.W.B. are replaced.
1. Turn off the power using ON/STANDBY button.
2. Press ON/STANDBY button while simultaneously pressing SURROUND MODE 0 and SURROUND MODE
buttons.
3. Check that the entire display is fl ashing with an interval of about 1 second, and release your fi ngers 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
ON/STANDBY
SURROUND MODE 1
SURROUND MODE 0
Service Jigs
When you update the fi rmware, you can use the following
JIG (RS232C to internal connector conversion adapter with 4P FFC cable kit ).
Please order to Denon Offi cial Service Distributor in your region if necessary.
8U-210100S :WRITING KIT: 1 Set
606050028012P
(Refer to "VERSION UPGRADE PROCEDURE OF FIRMW
:7P FFC(1.0) L-240: 1 Set
ARE".)
6
DISASSEMBLY
• Disassemble in order of the arrow of the fi gure of following fl ow.
• In the case of the re-assembling, assemble it in order of the reverse of the following fl ow.
• In the case of the re-assembling, observe "attention of assembling" it.
• 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.
TOP COVER
FRONT PANEL ASSY
Refer to "DISASSEMBLY
1. FRONT PANEL ASSY"
and "EXPLODED VIEW"
AUX UNIT
(Ref. No. of EXPLODED VIEW : C1)
PHONE UNIT
(Ref. No. of EXPLODED VIEW : C2)
VOLUME UNIT
(Ref. No. of EXPLODED VIEW : C3)
HEADPHONE UNIT
(Ref. No. of EXPLODED VIEW : C8)
POWER UNIT
(Ref. No. of EXPLODED VIEW : C9)
FRONT UNIT
(Ref. No. of EXPLODED VIEW : C10)
HDMI UNIT
Refer to "DISASSEMBLY
2. HDMI UNIT"
and "EXPLODED VIEW"
HDMI UNIT
(Ref. No. of EXPLODED VIEW : C7)
INPUT UNIT
Refer to "DISASSEMBLY
3. INPUT UNIT"
and "EXPLODED VIEW"
INPUT UNIT
(Ref. No. of EXPLODED VIEW : C6)
RADIATOR ASSY
Refer to "DISASSEMBLY
4. RADIATOR ASSY"
and "EXPLODED VIEW"
MAIN UNIT
(Ref. No. of EXPLODED VIEW : C5)
REGULATOT UNIT
(Ref. No. of EXPLODED VIEW : C13)
POWER TRANS
(Ref. No. of EXPLODED VIEW : C14)
POWER UNIT
Refer to "DISASSEMBLY
5. POWER UNIT"
and "EXPLODED VIEW"
POWER TRANS
Refer to "DISASSEMBLY
6. POWER TRANS "
and "EXPLODED VIEW"
About the photos used for descriptions in the DISASSEMBLY" section.
• The direction from which the photographs used herein were photographed is indicated at "Direction of photograph: ***"
at the left of the respective photographs.
• Refer to the table below for a description of the direction in which the photos were taken.
• Photographs for which no direction is indicated were taken from above the product.
The viewpoint of each photograph
(Photografy direction)
[View from above]
Direction of photograph: C
Direction of photograph: B
Front side
Direction of photograph: D
Direction of photograph: A
7
1. FRONT PANEL ASSY
Proceeding :
(1) Remove the screws.
View from bottom
(2) Cut the wire clamp band, then disconnect the connector wires and FFC cable. Remove the screws.
TOPCOVER
FRONT PANEL ASSY
FRONT PANEL ASSY
→
FFC cable
CN44
cut
CN209
cut
(3) Remove the screws.
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in FRONT PANEL ASSY.
CN71
8
WIRE SUPPORT UNIT
2. HDMI UNIT
Proceeding :
(1) Remove the screws.
Direction of photograph: A
(2) Disconnect the connector wire and FFC cable.
TOPCOVER
HDMI UNIT
→
HDMI UNIT
CN12FFC cable
9
3. INPUT UNIT
Proceeding :
(1) Remove the screws.
Direction of photograph: A
(2) Disconnect the connector wires and FFC cables, then remove the screws.
TOPCOVER
HDMI UNIT
→
FFC cable
INPUT UNIT
→
CN71CN43
CN42
INPUT UNIT
FFC cable
10
4. RADIATOR ASSY
Proceeding :
(1) Remove the screws.
Direction of photograph: A
(2) Disconnect the connector wires, then remove the screws.
TOPCOVER
HDMI UNIT
→
→
INPUT UNIT
CN71CN44
RADIATOR ASSY
→
CN46
RADIATOR ASSY
CN45
CN41
CN47CN48
11
(3) Remove the RADIATOR ASSY from the main unit.
Direction of photograph: C
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in RADIATOR ASSY.
5. POWER UNIT
Proceeding :
Please refer to "EXPLODED VIEW" for the disassembly method of POWER UNIT.
TOPCOVER
POWER UNIT
→
6. POWER TRANS
Proceeding :
Please refer to "EXPLODED VIEW" for the disassembly method of POWER TRANS.
CABINET TOP
TRANS MAIN
→
12
SPECIAL MODE
Special mode setting button
Press the ON/STANDBY button to turn on while pressing both buttons A and B at the same time.
b
ModeButton AButton BContents
Firmware versions such as Main, DSP are displayed in the FL
μcom/DSP Version display modeSTATUSDIMMER
Initialization mode
Mode for switching tuner frequency step
Mode for preventing remote control
acceptance
SURROUND
MODE
SURROUND
MODE
SURROUND
MODE
0
0
0
SURROUND
MODE
RESTORER
STATUS
display. Errors are displayed when they occur.
(Refer to page 14.)
Backup data initialization is carried out. (Refer to page 6.)
1
---E2 model only--Change tuner frequency step to AM9k/FM50kHz STEP or
AM:10k/FM:200kHz.
Operations using remote control are rejected.
"REMOTE LOCK:ON" is displayed in FL display.
(Mode cancellation: Turn off power and execute the same
button operations as when performing setup.)
DIMMER
RESTORERSTATUS
ON/STANDBY
SURROUND
0 MODE 1
13
1. μcom/DSP Version display mode
1.1. Operation specifi cations
μcom/DSP version display mode:
When started up, the version information is displayed.
Starting up:
With the "DIMMER" and "STATUS" buttons pressed, press the "ON/STANDBY" button to turn the power on.
Now, press the "STATUS" button to the display the 2nd item information on the FL Display.
1.2. Display Order
Model name → Main-μcom version → DSP version → iPod Dock version (Connecting iPod Dock)
DisplayState
AVR-391 E3 model
AVR-1311 E2 model
Model name
AVR-391 EA model
AVR-1311 E1C model
Main-μcom version
DSP version
iPod Dock (ASD-1R/11R)
iPod Dock (ASD-3/51)
Cleared of mode:
Press the "ON/STANDBY" button to turn the power off.
AVR391 E3
AVR1311 E2
AVR391 EA
AVR1311 E1C
Main**.**
DSP.*.*.*
Dock Ver :**.**
Dock :I********
1.3. Error display
See the following table for each "Error information" display and its contents (status).
Condition-State
DSP NGWhen DSP boot, executing DSP reset makes to becomes error.
DSP OK(No error display, version display only)
DSPERROR 01
14
ABOUT REPLACE THE MICROPROCESSOR WITH A NEW ONE
When replaced of the U-PRO (Microprocessor) or the Flash ROM, conrm contents of the following.
PWB Name Ref. No.Description
DIGITALIC91 T5CN5BSOFTWARE: Main
DIGITALIC82 ST25VF080B-50-4C-S2AFBSOFTWARE: DSP ROM
After
replaced
Remark
After replaced
A : Mask ROM (With software). No need write-in of software to the microprocessor.
B : Flash ROM (With software). Usually, no need write-in of software. But, when the software was updated, you should be
write-in of the new software to the microprocessor or ash ROM. Please check the software version.
C : Empty Flash ROM (Without software). You should be write-in of the software to the microprocessor or ash ROM.
Refer to "Update procedure" or "writing procedure", when you should be write-in the software.
VERSION UPGRADE PROCEDURE OF FIRMWARE
1. Preparations
-Before starting the operation-
(1) Personal Computer (Installed “BootTool_M330(Writing program).exe”).
(2) RS-232 cable (9P (Male), Straight).
(3) 8U-210100S Writing Kit.
(4) 606050028012P / 7P FFC(1.0) L=240.
-Connection of the AV receiver-
(1) Conrm the power on/off switch of the AV receiver is turning off.
(2) Connect the update terminal of AV receiver with the “Writing Kit”.
(Refer to gure below for the connection of the 7P FFC cable.)
(3) Connect the RS-232C cable from PC with the “Writing Kit”.
7P FFC Cable
Writing Kit
1 pin
This side is contacts of
7P FFC Cable.
7P FFC Cable
S706-709 : HIGE
S709
S708
RS-232C Cable
S707
S706
S702 : 3.3V
S702
PC
15
2. UPDATE FIRMWARE
(1) Connect the update terminal of AV receiver with the “Writing Kit”.
(2) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHHH
(3) Press the "ON/STANDBY" button to turn the power on of AV receiver.
(4) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHLH
(5) Press the "RESET" switch of “Writing Kit".
(6) Run the “BootTool_M330(Writing program).exe” on desktop of PC.
(7) Click the “Connect” button.
"Connected" is displayed, it is OK.
16
DSP SF1
(8) Choose Ram File(OnBoard_M330.s32).
Choose Ram File(OnBoard_M330.s32).
17
(9) Choose Flash File(DSP : SF1).
Choose "AVR1311_SF1_*_*_*_01.s32".
Choose "Hex File (*.S32)".
18
(10) Click the “Start” button.
The Setup Status bar appears.
19
(11) "Finished!!" is displayed. Click the "OK"” button.
(12) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHHH
(13) Press the "RESET" switch of “Writing Kit".
(14) AV receiver is power on and starts update of DSP1.
(15) "Write Comleted" is displayed in the FL tube.
(16) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHLH
(17) Press the "RESET" switch of “Writing Kit".
DSP SF2
(18) Click the “Resend” button.
"Connected" is displayed, it is OK.
20
(19) Choose Flash File(DSP : SF2).
Choose "AVR1311_SF2_*_*_*_01.s32".
Choose "Hex File (*.S32)".
21
(20) Click the “Start” button.
The Setup Status bar appears.
(21) "Finished!!" is displayed. Click the "OK"” button.
22
(22) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHHH
(23) Press the "RESET" switch of “Writing Kit".
(24) AV receiver is power on and starts update of DSP2.
(25) "Write Comleted" is displayed in the FL tube.
(26) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHLH
(27) Press the "RESET" switch of “Writing Kit".
MAIN
(28) Click the “Resend” button.
"Connected" is displayed, it is OK.
23
(29) Choose Flash File(MAIN).
Choose "AVR1311.s32".
Choose "Hex File (*.S32)".
24
(30) Click the “Start” button.
The Setup Status bar appears.
(31) "Finished!!" is displayed. Click the "OK"” button.
25
(32) Set the switch of “Writing Kit" (Refer to the table below).
DSPBOOTCEEPMCNVSS
HHHH
(33) Press the "RESET" switch of “Writing Kit".
(34) Initializing.
1. Turn off the power using ON/STANDBY button.
2. Press ON/STANDBY button while simultaneously pressing SURROUND MODE
and SURROUND MODE
0
buttons.
3. Check that the entire display is ashing with an interval of about 1 second, and release your ngers 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.
3. Notice:
Please keep the following notice for rmware update.
(a) Keep the PC environment
(b) Avoid the communication cable from the electrical noise source.
(e.g. telephone cable, AC line, a uorescent light)
(c) Don’t remove cable during update.
(d) Don’t turn off the power during update.
(e) Don’t run other PC application during update.
(f) Stop the resident program on PC (Virus checker and System check utilitu, etc)
(g) Stop the screen saver on PC.
(h) Stop the power save ability on PC.
(i) In case of laptop PC, Use the AC adaptor.
1
Conrming the rmware’s number after upgraded
After completion of the updating operation, the new version number can conrmed by starting up the AVR1311 or AVR391
according to the following procedure.
With the following operation, the AVR1311 or AVR391 can be set to the Flash ROM Version-Number Conemation mode.
Turn on power switch while simultaneously pressing "DIMMER" and "STATUS" buttons on the front panel. Every time the
"STATUS" button is pressed, version number of the Model, Main, DSP, … are indicated on the front panel section in the
following order.
DepressionButtonNameRemarks
1STATUSModel NameAVR1311 or AVR391 **
2STATUSMain CPUMain: **.**
3STATUSDSP ROMDSP.*.*.*
26
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.
(2) Presetting
• POWER (Power source switch) OFF
• SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
2. Adjustment
(1) emoved top cover and set VR41(FL),VR45(FR),VR42(C),VR44(SL),VR43(SR), on Main Amp. Unit at fully
counterclockwise position.
(2) Connect DC Voltmeter to test points (Front-Lch:CN51,Front-Rch:CN55,CENTERch:CN53,
Surround-Lch:CN52,Surround-Rch:CN54).
(3) Connect power cord to AC Line, and turn power switch "ON".