Denon AVR-2809CI User manual

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.
注 意
サービスをおこなう前に、このサービスマニュアルを
必ずお読みください。本機は、火災、感電、けがなど
に対する安全性を確保するために、さまざまな配慮を
おこなっており、また法的には「電気用品安全法」に
もとづき、所定の許可を得て製造されております。
従ってサービスをおこなう際は、これらの安全性が維
持されるよう、このサービスマニュアルに記載されて
いる注意事項を必ずお守りください。
●本機の仕様は性能改良のため、予告なく変更すること
があります。
●補修用性能部品の保有期間は、製造打切後 8 年です。
●修理の際は、必ず取扱説明書を参照の上、作業を行っ
てください。
●本文中に使用しているイラストは、説明の都合上現物
と多少異なる場合があります。
X0391 V.02 DE/CDM 0809
SERVICE MANUAL
AV SURROUND RECEIVER
AV SURROUND AMPLIFIER
MODEL JP EU EC E2 EK E2A E1C EUT
AVR-2809CI
33
AVR-2809
3
AVR-989
3
AVC-2809
33
Ver. 2
Please refer to the
MODIFICATION NOTICE.

2
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
Pleaseheedthepointslistedbelowduringservicingandinspection.
◎Heedthecautions!
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.
◎Cautionconcerningelectricshock!
(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.
◎Onlyusedesignatedparts!
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 zon
wiring diagrams and parts lists, be sure to use the desig-
nated parts.
◎Besuretomountpartsandarrangethe
wiresastheywereoriginally!
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.
◎Inspectforsafetyafterservicing!
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 1MΩor greater. If it is less, the set must
be inspected and repaired.
Concerningimportantsafety
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 zmark.
(2) Parts lists ... Indicated by the zmark.
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
CAUTION

3
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
サービス、点検時にはつぎのことにご注意願います。
◎注意事項をお守りください!
サービスのとき特に注意を必要とする個所については
キャビネット、部品、シャーシなどにラベルや捺印で注意
事項を表示しています。これらの注意書きおよび取扱説明
書などの注意事項を必ずお守りください。
◎感電に注意!
(1) このセットは、交流電圧が印加されていますので通電
時に内部金属部に触れると感電することがあります。
従って通電サービス時には、絶縁トランスの使用や手
袋の着用、部品交換には、電源プラグを抜くなどして
感電にご注意ください。
(2) 内部には高電圧の部分がありますので、通電時の取扱
には十分ご注意ください。
◎分解、組み立て作業時のご注意!
板金部品の端面の『バリ』は、部品製造時に充分管理をし
ておりますが、板金端面は鋭利となっている箇所が有りま
すので、部品端面に触れたまま指を動かすとまれに怪我を
する場合がありますので十分注意して作業して下さい。手
の保護のために手袋を着用してください。
◎指定部品の使用!
セットの部品は難燃性や耐電圧など安全上の特性を持っ
たものとなっています。従って交換部品は、使用されてい
たものと同じ特性の部品を使用してください。特に配線
図、部品表に z印で指定されている安全上重要な部品は
必ず指定のものをご使用ください。
◎部品の取付けや配線の引きまわしは、
元どおりに!
安全上、テープやチューブなどの絶縁材料を使用したり、
プリント基板から浮かして取付けた部品があります。また
内部配線は引きまわしやクランパーによって発熱部品や
高圧部品に接近しないように配慮されていますので、これ
らは必ず元どおりにしてください。
◎サービス後は安全点検を!
サービスのために取り外したねじ、部品、配線などが元ど
おりになっているか、またサービスした個所の周辺を劣化
させてしまったところがないかなどを点検し、外部金属端
子部と、電源プラグの刃の間の絶縁チェックをおこなうな
ど、安全性が確保されていることを確認してください。
(絶縁チェックの方法)
電源コンセントから電源プラグを抜き、アンテナやプラグ
などを外し、電源スイッチを入れます。500V 絶縁抵抗計
を用いて、電源プラグのそれぞれの端子と外部露出金属部
[アンテナ端子、ヘッドホン端子、マイク端子、入力端子
など]との間で、絶縁抵抗値が1 MΩ 以上であることを
確認してください。この値以下のときはセットの点検修理
が必要です。
安全上重要な部品について
本機に使用している多くの電気部品、および機構部品は安
全上、特別な特性を持っています。この特性はほとんどの
場合、外観では判別つきにくく、またもとの部品より高い
定格(定格電力、耐圧)を持ったものを使用しても安全性
が維持されるとは、限りません。安全上の特性を持った部
品は、このサービスマニュアルの配線図、部品表につぎの
ように表示していますので必ず指定されている部品番号
のものを使用願います。
(1) 配線図… zマークで表示しています。
(2) 部品表… zマークで表示しています。
指定された部品と異なるものを使用した場
合には、感電、火災などの危険を生じる恐
れがあります。
注 意
注 意

4
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
DIMENSION
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
344
434
155
15.5
170.5
20.7
244.5
372.8
20.5
414
54.7

5
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
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
EU model
Back Panel side
EC, E2, E1C, JP model Back Panel side
ワイヤー整形図
調整や部品の交換等により、ワイヤー類の結束をはずした
り移動させた場合には、それらの作業が完了した時点でワ
イヤーの整形をおこなってください。正しく整形されてな
いとノイズ発生の原因となることがあります。
上面からみたワイヤー整形
Front Panel side
Front Panel side

6
AVR-2809CI / AVR-2809 / AVR-989 / AVC-2809
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 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 memorize your setting for restor-
ing after the initialization.
JIG to use for servicing
When you repair the printing board, you can use the following
JIG. Please order to Denon Official Service Distributor in your
region if necessary.
Extention cable kit
00D SPK- 561 EXTENSION UNIT KIT : 1 Set
00D SPK- 562 TUCP CONN. JOINT KIT : 1 Set
Extention cable for Idling Current
Parts Number for Extension Cables and Quantity of Unit.
How to use and Adjust Idle Current.
1. The thin and hard plate (ex. Ruler) is fixed with the tape
behind the cable.
2. The voltmeter is connected with the other side of the ex-
tension cable.
3. Refer to ADJUSTMENT(Idling Current).
Parts Number Parts Name Q'ty / unit Remarks
612050082004D 6P 250mm NH 1 L=250mm 6P NH Cable
612050083007D 8P 250mm NH 1 L=250mm 8P NH Cable
1,2 2,3
サービス時の注意事項
AVサラウンドレシーバー / アンプの初期化
について
マイコンやマイコン周辺部品、Digital 基板等を交換した場
合は、AV サラウンドレシーバー / アンプの初期化を行って
下さい。
1. on/off ボタンを OFF にします。
2. STANDARD ボタンと DSPSIMULATION ボタンを同時に
押しながら、on/off ボタンを押して ON にします。
3. ディスプレイ表示が約 1秒間隔で点滅するのを確認後、
2つのボタンから指を離します。
*マイコンが初期化されます。
注意 :・上記 3 の状態にならない場合は、もう一度操作 1
からやり直してください。
・初期化を行うとお客様が設定した内容が工場出
荷状態に戻りますので、あらかじめ設定内容を
控えておき初期化後再設定してください。
サービス時に使用する治具について
基板を修理する際、使用する治具は 下記のとおりです。
必要に応じて販社サービスへ注文下さい。
延長ケーブルキット
00DSPK-561EXTENSIONUNITKIT:1 式
00DSPK-562TUCPCONN.JOINTKIT:1 式
アイドル電流用延長ケーブル
延長ケーブルの品番と使用本数
使用方法と調整方法
1. ケーブルに沿わして定規などの硬い板をテープで止めて
ください。
2. ケーブルのコネクタとは反対側に電圧計を接続します。
3. 調整の項目を参照してアイドル電流を調整します。
Parts Number Parts Name Q'ty / unit Remarks
612050082004D 6P 250mm NH 1 L=250mm 6P NH Cable
612050083007D 8P 250mm NH 1 L=250mm 8P NH Cable

7
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
DISASSEMBLY
• Disassemble in order of the arrow of the figure of following flow.
下記フロー図の矢印の順番にはずしてください。
• In the case of the re-assembling, assemble it in order of the reverse of the following flow.
再組み立ての場合は、下記のフローの逆の順番に組立ててください
• In the case of the re-assembling, observe "attention of assembling" it.
再組み立ての場合は、「組立のご注意」を遵守してください。
TOP COVER SUB ASS
Y
FRONT UNIT ASS
Y
DIGITAL UNIT ASS
Y
Refer to "DISASSEMBLY 1.FRONT UNIT ASSY" Refer to "DISASSEMBLY 2.DIGITAL UNIT ASSY"
and "EXPLODED VIEW" and "EXPLODED VIEW"
FLD UNIT DIGITAL UNIT ASSY
(Ref. No. of EXPLODED VIEW : 3-1) (Ref. No. of EXPLODED VIEW : 1)
FUNC UNIT
(Ref. No. of EXPLODED VIEW : 3-2) BACK PANEL ASS
Y
FRONT IN UNIT Refer to "DISASSEMBLY 3.BACK PANEL ASSY"
(Ref. No. of EXPLODED VIEW : 3-3) and "EXPLODED VIEW"
MIC UNIT DIGITAL I/O UNIT
(Ref. No. of EXPLODED VIEW : 3-4) (Ref. No. of EXPLODED VIEW : 3-6)
P.SW UNIT
(Ref. No. of EXPLODED VIEW : 3-9) A.VIDEO UNIT ASS
Y
Refer to "DISASSEMBLY 4.A.VIDEO UNIT ASSY"
and "EXPLODED VIEW"
A.VIDEO UNIT
(Ref. No. of EXPLODED VIEW : 2-1)
TRANS AUDIO UNIT ASS
Y
Refer to "DISASSEMBLY 14.TRANS" Refer to "DISASSEMBLY 5.AUDIO UNIT ASSY"
and "EXPLODED VIEW" and "EXPLODED VIEW"
TRANS AUDIO UNIT
(Ref. No. of EXPLODED VIEW : 42) (Ref. No. of EXPLODED VIEW : 2-2)
ZONE UNIT
(Ref. No. of EXPLODED VIEW : 2-3)
UCON CONNECT UNIT
Refer to "DISASSEMBLY 6.UCON CONNECT UNIT"
and "EXPLODED VIEW"
UCON CONNECT UNIT
(Ref. No. of EXPLODED VIEW : 3-8)
AUDIO LIMIT UNIT AM FM TUNE
R
Refer to "DISASSEMBLY 8.AUDIO LIMIT UNIT" REMOTE IPOD UNIT
and "EXPLODED VIEW" Refer to "DISASSEMBLY 7.AM FM TUNER
/
AUDIO LIMIT UNIT REMOTE IPOD UNIT"
(Ref. No. of EXPLODED VIEW : 4-7) and "EXPLODED VIEW"
AM FM TUNER
(Ref. No. of EXPLODED VIEW : 44)
REMOTE IPOD UNIT
(Ref. No. of EXPLODED VIEW : 3-5)
MAIN CPU UNIT ASS
Y
Refer to "DISASSEMBLY 9.MAIN CPU UNIT ASSY
and "EXPLODED VIEW"
MAIN CPU UNIT
(Ref. No. of EXPLODED VIEW : 6-1)
PRIM/CPU SUPPLY UNIT ASS
Y
REG UNIT ASS
Y
Refer to "DISASSEMBLY 13.PRIM/CPU SUPPLY ASSY" Refer to "DISASSEMBLY 10.REG UNIT ASSY"
and "EXPLODED VIEW" and "EXPLODED VIEW"
POWER UNIT REG UNIT
(Ref. No. of EXPLODED VIEW : 6-2) (Ref. No. of EXPLODED VIEW : 4-1)
PRIM/CPU SUPPLY UNIT
(Ref. No. of EXPLODED VIEW : 6-3) PRE AMP UNIT ASS
Y
UCON JUNCTION UNIT Refer to "DISASSEMBLY 11. PRE AMP UNIT ASSY"
(Ref. No. of EXPLODED VIEW : 6-4) and "EXPLODED VIEW"
PRE AMP UNIT
(Ref. No. of EXPLODED VIEW : 4-6)
POWER AMP UNIT ASS
Y
Refer to "DISASSEMBLY 12.POWER AMP UNIT ASSY
"
and "EXPLODED VIEW"
REG UNIT
(Ref. No. of EXPLODED VIEW : 5-1)

8
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
EU model
Picture B
Picture A
Picture C Picture D
Picture E
The viewpoint of each photograph
(photography direction)
各図の視点(撮影方向)
Top view
Front side
EC, E2, E1C, JP model
Picture B
Picture A
Picture C Picture D
Picture E
The viewpoint of each photograph
(photography direction)
各図の視点(撮影方向)
Top view

9
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
1. FRONT UNIT ASSY
(1) Disconnect the connector wires. ( コネクタワイヤーをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →FRONT UNIT ASSY
CX062
Top view
cut
CX021
EU model
CX062
Top view
cut
CX021
EC, E2, E1C, JP model

10
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
(2) Disconnect the FFC cable.(FFC ケーブルをはずす。)
(3) Remove the screws. ( ねじをはずす。)
CORD HOLDER : Loose
FFC CABLE
Picture C
Top vi e w
Bottom view
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in FRONT UNIT ASSY.
FRONTUNITASSY の各基板のはずしかたは "EXPLODEDVIEW" を参照してください。

11
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
2. DIGITAL UNIT ASSY
(1) Disconnect the connector wires and boards.(コネクタワイヤーとコネクタボードをはずす。)
(2) Remove the screws. ( ねじをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
DIGITAL UNIT
DIGITAL I/O UNIT
CX041
CX131
CX065
CX035
Top view
cut
CORD HOLDER : Loose
Board to board
EU model
DIGITAL UNIT DIGITAL I/O UNIT
CX041
CX131
CX065
CX035
Top view
cut
CORD HOLDER : Loose
Board to board
EC, E2, E1C, JP model
Picture B
EU model
Picture B
EC, E2, E1C, JP model

12
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
3. BACK PANEL ASSY
(1) Remove the screw cover.(SCREWCOVER をはずす。)
(2) Remove the screws.(ねじをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY
SCREW COVER PUSH RIVET
Picture B
EU model
Picture B
PUSH RIVET
SCREW COVER
EC, E2, E1C, JP model
Picture B
ً
EU model
Picture B
ً
EC, E2, E1C, JP model
Please refer to "EXPLODED VIEW" for the disassembly method of each P.W.B included in BACK PANEL ASSY.
BACKPANELASSY の各基板のはずしかたは "EXPLODEDVIEW" を参照してください。

13
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
4. A.VIDEO UNIT ASSY
(1) Disconnect the connector wires and boards. ( コネクタワイヤーとコネクタボードをはずす。)
5. AUDIO UNIT ASSY
(1) Disconnect the connector wires and boards. ( コネクタワイヤーとコネクタボードをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
A.VIDEO UNIT
Board to board CX077
Top view
CY085
Board to board
EU model
Board to board
CX077
Board to board
Top view
A.VIDEO UNIT
EC, E2, E1C, JP model
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY
AUDIO UNIT
Board to board
CY135 CY079 Board to board
Top view
EU model

14
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
6. UCON CONNECT UNIT
(1) Disconnect the connector board.(コネクタボードをはずす。)
AUDIO UNIT
Board to board
CY135 CY079 Board to board
Top view
EC, E2, E1C, JP model
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
Picture B
CX125
CX124

15
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
7. AM FM TUNER / REMOTE IPOD UNIT
(1) Disconnect the connector wire and connector board.(FFCケーブルとコネクタボードをはずす。)
8. AUDIO LIMIT UNIT
(1) Disconnect the connector boards.(コネクタボードをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AM FM TUNER / REMOTE IPOD UNIT
FFC CABLE
Picture B
Board to board AM FM TUNERREMOTE IPOD UNIT
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT
Top view
Board to board

16
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
9. MAIN CPU UNIT ASSY
(1) Disconnect the connector wire and FFC cables. ( コネクタワイヤーと FFC ケーブルをはずす。)
(2) Remove the screw.(ねじをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT →MAIN CPU UNIT ASSY
CX115
Picture E
PCB HOLDER
FFC CABLE
MAIN CPU UNIT
EU model
CX115
Picture E
PCB HOLDER
FFC CABLE
MAIN CPU UNIT
EC, E2, E1C, JP model
Picture C
MAIN CPU UNIT

17
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
10. REG UNIT ASSY
(1) Disconnect the connector wire and remove the screws. (コネクタワイヤーとねじをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT →MAIN CPU UNIT ASSY
→REG UNIT ASSY
CX031
Wire clamp band : LooseBoard to board
Picture B
EU model
CX031
Wire clamp band : LooseBoard to board
Picture B
EC, E2, E1C, JP model

18
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
11. PRE AMP UNIT ASSY
(1) Remove the screws and disconnect the connector board.(ねじとコネクタボードをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT →MAIN CPU UNIT ASSY
→REG UNIT ASSY →PRE AMP UNIT ASSY
Top view
Board to board
EU model
Top view
Board to board
EC, E2, E1C, JP model

19
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
12. POWER AMP UNIT ASSY
<attention of assemble>
bWhen repairing, be sure to provide spatial distance between R752 to R765 and C723 to C729.
R752 to R765 become hot when there is a problem.
As a measure to deal with the heat of R752 to R765, attach GLASS TUBE to C723 to C729 for products with serial num-
bers starting from the ones indicated below.
Do not attach GLASS TUBE to products with earlier serial numbers.
Be particularly careful when repairing products on which no GLASS TUBE are attached.
<組立のご注意>
b修理の際は、R752 〜 R765 と C723 〜 C729 の間には、必ず空間距離を設けてください。
R752 〜 R765 は、異常時に高温になります。
R752 〜 R765 の高温対策として、以下のシリアル番号以降の生産品には、C723 〜 C729 に保護用の GLASSTUBE を
付けています。
それ以前の生産品には、GLASSTUBE を付けていません。
GLASSTUBE が付いていない生産品の修理時は特に注意してください。
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT →MAIN CPU UNIT ASSY
→REG UNIT ASSY →PRE AMP UNIT ASSY
→POWER AMP UNIT ASSY
Please refer to "EXPLODED VIEW" for the disassembly method of POWER AMP UNIT ASSY.
POWERAMPUNITASSY のはずしかたは "EXPLODEDVIEW" を参照してください。
C723 C724 C725 C726 C727 C728 C729
R752 R753 R754 R755 R756
R763
R758
R765
R759 R760 R761 R762 R764
GLASS TUBE R757
MODEL SERIAL No.
AVR2809CIBKEU 02041~
AVR2809CIBKEC 00501~
AVR989BKEU 01001~
s
s

20
AVR-2809CI/AVR-989/AVR-2809/AVC-2809
13. PRIM/CPU SUPPLY UNIT UNIT ASSY
(1) Disconnect the connector wires.(コネクタワイヤーをはずす。)
Proceeding (手順) : TOP COVER SUB ASSY →DIGITAL UNIT ASSY
→BACK PANEL ASSY →A.VIDEO UNIT ASSY
→AUDIO UNIT ASSY →UCON CONNECT UNIT
→AUDIO LIMIT UNIT →MAIN CPU UNIT ASSY
→PRIM/CPU SUPPLY UNIT ASSY
CX515
Top view
CX054 CX033
CX512 CX022 CX021
EU model
CX515
Top view
CX054 CX033
CX512 CX022 CX021
EC, E2, E1C, JP model
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