Denon DRA-CX3 User manual
SERVICE MANUAL
MODEL
DRA-CX3
AM-FM STEREO RECEIVER
For Europe model
X0314 V.02 DE/CDM 0703
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。
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, specifications and
design are subject to change without notice.
●
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。
Denon Brand Company, D&M Holdings Inc.
TOKYO, JAPAN
Ver. 2
Please refer to the
MODIFICATION NOTICE.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
2
DRA-CX3
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 or seals. Be sure to heed these cautions and the cau-
tions indicated in the handling instructions.
◎Caution concerning electric shock!
(1) An AC voltage is impressed on this set, so touching inter-
nal metal parts when the set is energized could cause
electric shock. Take care to avoid electric shock, by for ex-
ample using an isolating transformer and gloves when
servicing while the set is energized, unplugging 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.
◎Only use designated parts!
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 particu-
lar, for the important safety parts that are marked ! 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 reasons, some parts use tape, tubes or other insu-
lating 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.
◎Inspect for safety after servicing!
Check that all screws, parts and wires removed or discon-
nected for servicing have been put back in their original posi-
tions, inspect that no parts around the area that has been
serviced have been negatively affected, conduct an insulation
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 insulation re-
sistance between the terminals of the power plug and the ex-
ternally exposed metal parts (antenna terminal, headphones
terminal, microphone terminal, input terminal, etc.) is 1MΩor
greater. If it is less, the set must be inspected and repaired.
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 pre-
served. 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 designat-
ed part number.
(1) Schematic diagrams ... Indicated by the ! mark.
(2) Parts lists ... Indicated by the ! mark.
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
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!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 1MΩ 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…!マークで表示しています。
(2) 部品表…!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
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
3
DRA-CX3
CAUTION IN SERVICING
Initializing AM-FM RECEIVER
AM-FM RECEIVER initialization should be performed when the
µcom and peripheral parts of µcom are replaced.
1. Switch off the unit using the Main unit’s power operation
switch.
2. Hold the following the “CD” button and the “PRESET+” but-
ton, and turn the Main unit’s power operation switch on.
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.
サービス時の注意事項
AM-FM レシーバーの初期化について
マイコンやマイコン周辺部品等を交換した場合は、AM-FM レ
シーバーの初期化を行って下さい。
1. 電源スイッチを OFF にします。
2. "CD" ボタンと "PRESET+" ボタンを同時に押しながら、電
源スイッチを 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。
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
7
DRA-CX3
SEMICONDUCTORS / 半導体一覧表
Only major semiconductors are shown, general semiconductors etc. are omitted to list.
主な半導体を記載しています。汎用の半導体は記載を省略しています。
IC's
M3062LFGPGP (IC501)
BLOCK DIAGRAM
1 2 3 4 5 6 7 8 9 10111213141516171819202122232425
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
515253545556
57585960616263646566676869707172737475
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
1
00
P0
0
/AN
00
/D
0
P0
1
/AN
01
/D
1
P0
2
/AN
02
/D
2
P0
3
/AN
03
/D
3
P0
4
/AN
04
/D
4
P0
5
/AN
05
/D
5
P0
6
/AN
06
/D
6
P0
7
/AN
07
/D
7
P1
0
/D
8
P1
1
/D
9
P1
2
/D
10
P1
3
/D
11
P1
4
/D
12
V
REF
AV
SS
V
CC1
X
IN
X
OUT
V
SS
RESET
CNVss
P8
7
/X
CIN
P8
6
/X
COUT
BYTE P2
0
/AN
20
/A
0
(/D
0
/-)
P2
1
/AN
21
/A
1
(/D
1
/D
0
)
P2
2
/AN
22
/A
2
(/D
2
/D
1
)
P2
3
/AN
23
/A
3
(/D
3
/D
2
)
P2
4
/AN
24
/A
4
(/D
4
/D
3
)
P2
5
/AN
25
/A
5
(/D
5
/D
4
)
P2
6
/AN
26
/A
6
(/D
6
/D
5
)
P2
7
/AN
27
/A
7
(/D
7
/D
6
)
P3
0
/A
8
(/-/D
7
)
P3
1
/A
9
P3
2
/A
10
P3
3
/A
11
P3
4
/A
12
P3
5
/A
13
P3
6
/A
14
P3
7
/A
15
P4
0
/A
16
P4
1
/A
17
P4
2
/A
18
P4
3
/A
19
P7
4
/TA2
OUT
/W
P7
6
/TA3
OUT
P5
6
/ALE
P7
7
/TA3
IN
P5
5
/HOLD
P5
4
/HLDA
P5
3
/BCLK
P5
2
/RD
V
CC2
V
SS
P5
7
/RDY/CLK
OUT
P4
5
/CS1
P4
6
/CS2
P4
7
/CS3
AVcc
P6
3
/T
X
D
0
/SDA
0
P6
5
/CLK
1
P6
6
/RxD
1
/SCL
1
P6
7
/T
X
D
1
/SDA
1
P6
1
/CLK
0
P6
2
/RxD
0
/SCL
0
P10
0
/AN
0
P10
1
/AN
1
P10
2
/AN
2
P10
3
/AN
3
P9
3
/DA
0
/TB3
IN
P9
4
/DA
1
/TB4
IN
P9
5
/ANEX0/CLK4
P9
6
/ANEX1/S
OUT
4
P9
1
/TB1
IN
/S
IN
3
P9
2
/TB2
IN
/S
OUT
3
P8
0
/TA4
OUT
/U
P6
0
/CTS
0
/RTS
0
P6
4
/CTS
1
/RTS
1
/CTS
0
/CLKS
1
P8
2
/INT
0
P8
3
/INT
1
P8
5
/NMI
P9
7
/AD
TRG
/S
IN
4
P4
4
/CS0
P5
0
/WRL/WR
P5
1
/WRH/BHE
P9
0
/TB0
IN
/CLK3
P8
4
/INT
2
P7
2
/CLK
2
/TA1
OUT
/V
P7
1
/RxD
2
/SCL
2
/TA0
IN
/TB5
IN
(Note)
P7
0
/T
X
D
2
/SDA
2
/TA0
OUT
(Note)
P7
5
/TA2
IN
/W
P7
3
/CTS
2
/RTS
2
/TA1
IN
/V
P1
5
/D
13
/INT
3
P1
6
/D
14
/INT
4
P1
7
/D
15
/INT
5
P10
7
/AN
7
/KI
3
P10
6
/AN
6
/KI
2
P10
5
/AN
5
/KI
1
P10
4
/AN
4/
KI
0
P8
1
/TA4
IN
/U
M16C/62P Group
Timer (16-bit)
Output (timer A): 5
Input (timer B): 6
Internal peripheral functions
Watchdog timer
(15 bits)
DMAC
(2 channels)
D-A converter
(8bitsX2channels)
A-D converter
(10 bits
X
8 channels
Expandable up to 26 channels)
UART or
clock synchronous serial I/O
(8 bits
X
3 channels)
System clock generator
X
IN
-X
OUT
X
CIN
-X
COUT
PLL frequency synthesizer
Ring oscillator
M16C/60 series16-bit CPU core
Port P0
8
Port P1
8
Port P2
8
Port P3
8
Port P4
8
Port P5
8
Port P6
8
CRC arithmetic circuit (CCITT )
(Polynomial : X
16
+X
12
+X
5
+1)
Memory
8788
Port P10
Port P9
Port P8
Port P7 Port P8
5
ROM
(Note 1)
RAM
(Note 2)
Note 1: ROM size depends on microcomputer type.
Note 2: RAM size depends on microcomputer type.
Note 3: Ports P11 to P14 exist only in 128-pin version.
Clock synchronous serial I/O
(8 bits
X
2 channels)
R0LR0H
R1H R1L
R2
R3
SB
FLG
USP
ISP
INTB
PC
Multiplier
Port P11
8
Port P14
2
Port P12
8
Port P13
8
Three-phase motor
control circuit
A0
A1
FB
<V
CC2
ports>
(Note 3) (Note 3) (Note 3) (Note 3)
<V
CC1
ports>
<V
CC1
ports>
<V
CC1
ports> <V
CC2
ports>
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
8
DRA-CX3
Terminal Function
Pin No. Port Name I/O Initial Function
1 NC O - Not Used.
2 FL_RESET O L Reset output to driver built into FL display tube.
(Low pulse of a microsecond or more .)
3 TONE_DATA O L Data output to TC9184AP. (20bit)
4 TONE_STROBE O L Strobe output to TC9184AP.
5 TONE_CLOCK O L Clock output to TC9184AP. (below 500kHz)
6 BYTE I - External data bus width switching input. (GND : Single chip mode)
7 CNVSS I - Processor mode switching input. (GND : Single chip mode, PULL DOWN)
(Use for updating program.)
8 NC O L Not Used.
9 NC O L Not Used.
10 RESET I - Reset input.
11 XOUT O - Oscillator output. (16 MHz)
12 VSS I - GND.
13 XIN I - Oscillator output. (16 MHz)
14 VCC1 I - Power supply.
15 NC I - Not used. (PULL UP)
16 O.CURRENT/
O.VOLTAGE
I - Overcurrent / overvoltage detection input of power supply unit.
(Active : Low edge)
17 AC OFF I - Power failure detection input.
18 DBRXD I - Not used. (GND)
19 OSC O L Oscillation frequency control output of power supply unit.
20 H/P_SW I - Headphones connected/disconnected detection input.
21 ENC_B I - Rotary encoder B terminal input.
22 ENC_A I - Rotary encoder A terminal input.
23 FL_CS O L Chip selection output to driver built into FL display tube.
24 LED_O O L Power LED control signal output. ( Orange, STANDBY, H:turn on)
25 LED_R O L Power LED control signal output. (Red, POWER ON, H:turn on)
26 DABCLK O L Not used.
27 DABRXD I - Not used. (GND)
28 DABTXD O L Not used.
29 IPOD_TX O L Data output to i-Pod. (Use even when updating program.)
30 IPOD_RX I - Data input from i-Pod. (Use even when updating program.)
31 NC O L Not used.
32 NC O L Not used. (Terminal for RDS test)
33 S1_DIN I - GND. (DAB ready communication input)
34 S1_DOUT O L Not used. (DAB ready communication output)
35 NC O L Not used.
36 NC O L Not used.
37 NC O L Not used.
38 NC O L Not used.
39 EPM O L Use for updating program.
40 E2P_CLK O L Clock output to EEPROM.
41 E2P_DO I - Data input from EEPROM.
42 E2P_DI O L Data output to EEPROM.
43 E2P_CS O L Chip selection output to EEPROM.
44 CE O L Use for updating program.
45 NC O L Not used.
46 NC O L Not used.
47 PWB_CHECK I - PWB checking mode input.
48 PWB_CHECK I - PWB checking mode input.
49 PWB_CHECK I - PWB checking mode input.
50 PWB_CHECK I - PWB checking mode input.
51 NC O L Not used.
52 NC O L Not used.
53 NC O L Not used.
54 PHONO O L Output for input selection relay. (H : select PHONE)
55 CD O L Output for input selection relay. (H : select CD)
56 LINE1 O L Output for input selection relay. (H : select LINE1)
57 LINE2 O L Output for input selection relay. (H : select LINE2)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
9
DRA-CX3
58 LINE3 O L Output for input selection relay. (H : select LINE3)
59 TU_POWER O L Tuner power ON/OFF control. (H : Tuner ON)
60 VCC I - Power supply.
61 TUNER O L Output for input selection relay. (H : select TUNER)
62 VSS I - GND.
63 RDS_RST O L Reset output to RDS IC.
64 STEREO I - Tuner stereo signal detection input.
65 TUNED I - Tuner reception detection input.
66 T.MUTE O L Tuner MUTE output.
67 RDS_CE O L Chip enable output to tuner RDS IC.
68 RDS_DATA O L Data output to tuner RDS IC.
69 RDS_CLK O L Clock output to tuner RDS IC.
70 RDS_DO I - Data input from tuner RDS IC.
71 Not used I - GND. (Not used)
72 PROTECT I - Power Amp. Error detection input.
73 REMOTE I - IR remote controller input.
74 IPOD_CONNECT I - i-Pod connected/disconnected detection input. (H : Connected)
75 IPOD_POWER O L i-Pod power supply ON/OFF control output.
76 ENA O L Signal output to stop oscillator of Power Amp.
77 SP_MUTE O L SP MUTE output. (H: MUTE ON)
78 DIRECT O L SOURCE DIRECT RELAY control output.
79 H/P_MUTE O L Headphone MUTE output. (H: MUTE ON)
80 AC_RELAY O L Power ON/OFF control. (H : Tuner ON)
81 NC O L Not used.
82 REC O L REC MUTE output. (H: MUTE ON)
83 VOL_DATA O L Data output to TC94A32FG. (24bit)
84 VOL_CLOCK O L Clock output to TC94A32FG. (below 1MHz)
85 VOL_STROBE O L Strobe output to TC94A32FG.
86 NC O L Not used.
87 THERMO I - Power Amp. Overheating detection input.
88 USA O L Not Used.
89 EURO I - Product destination selection input. (JAPAN : L, EURO : H)
90 TEMP I - Power unit overheating detection input.
91 FREQ I - TUNER's skip frequency switching input.
92 RDS I - RDS YES/NO selection input. (H : YES, L : NO)
93 KEY0 I(AD) - Main unit's operating button detection input.
94 AVSS I - GND for AD converter.
95 KEY1 I(AD) - Main unit's operating button detection input.
96 VREF I - Reference voltage input for AD converter and DA converter.
97 AVCC I - Power supply of AD converter.
98 NC O L Not used.
99 FL_DA O L Serial data output to driver built into FL display tube.
100 FL_CLK O L Serial clock output to driver built into FL display tube.
Pin No. Port Name I/O Initial Function
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
10
DRA-CX3
DA428440E-E (IC702)
BLOCK DIAGRAM
Control chip
44 FB2
Driver chip1
Driver chip2
VDD 22
AGND
1,9,12,21
VSS 2,11,20
IN1- 17
AGND1- 16
ENA 4
IN2+ 15
AGND2+ 14
TEST 19
DCG 7
THM 3
OCM 6
VDCK 10
Inverting
Non-inverting
VSCK 8
42 ZB2
23 FB1
25 ZB1
28 VD1
32 PWMFB1
33 SUB
41 PWMFB2
39 VS2
35 VDR2
37 VD2
High
drive
Low
drive
Current
d
etect
Current
detect
Reciever
DeadTime
Level
shift
High
drive
Low
drive
Current
detect
Current
detect
Reciever
DeadTime
Level
shift
COM/MECC
Control ch1
Comp
arator
COM/MECC
Control ch2
Comp
arator
Voltage
check
Thermal
Warning
Current Prot / HF Prot
Rec.
Soft
Limit
NTC
36 VD2
26 VDR1
31 PWM1
27 VD1
29 VS1
30 VS1
34 VS
40 PWM2
38 VS2
NC
13,18,24,43
Rec.
Soft
Limit
Current Prot / HF Prot
Shnchro
Circuit
SYN 5
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
11
DRA-CX3
Terminl Function
Pin No. Pin Name Function
1 AGND Analog ground for control chip power supply.
2 VSS Negative power supply for control chip (-5V).
3 THM Thermal Monitor
Error signal of open collector output “L” for two conditions.
1. Over temperature limitation.
2. Over temperature warning. By connecting to the ENA pin, thermal shutdown is set.
4 ENA Bi-direction input/output.
The input “H” enables to start switching and the input “L” disables.
Input is including hysteresis for glitch free enable of the system.
When the protection circuit detects the over voltage condition, the open collector output turns on.
5 SYN The switching frequency can be synchronized with frequency of this pin signal to avoid the influence
for AM radio tuner.
Normal condition is “L”.
6 OCM Over Current Monitor
Error signal of open collector output “L” for two conditions.
1. Over current limitation.
2. For monitoring the state of control and average voltage across the zobel resistor in case of of-limit
conditions.
7 DCG This high impedance output generates a current in case of over voltage condition on the power stage
voltage (VD/VS).
This current is designed to turn-on a set of discharge transistors.
8 VSCK This high impedance input for monitoring negative power stage.
This monitoring controls the soft clipping circuit and the over voltage shutdown.
9 AGND Analog ground for control chip power supply.
10 VDCK This high impedance input for monitoring positive power stage.
This monitoring controls the soft clipping circuit and the over voltage shutdown.
11 VSS Negative power supply for control chip (-5V).
12 AGND Analog ground for control chip power supply.
13 NC
14 AGND2 Input reference for channel 2.
This is true inverting low impedance (1kohm) input for avoiding ground loop noise.
15 IN2+ High impedance audio input for channel 2.
This input is non-inverting.
16 AGND1 Input reference for channel 1.
This is true non-inverting low impedance (2kohm) input for avoiding ground loop noise.
17 IN1- High impedance audio input for channel 1.
This input is inverting.
18 NC
19 TEST Test terminal connect to VSS.
20 VSS Negative power supply for control chip (-5V).
21 AGND Analog ground for control chip power supply.
22 VDD Positive power supply for control chip (+5V).
23 FB1 Feedback for global loop of channel 1.
24 NC
25 ZB1 For estimating the power dissipation in the zobel resister,
this input is sensing the zobel voltage via a resistive network of channel 1.
26 VDR1 Positive supply for driver chip of channel 1 with respect to VS1; (VS1+10V).
27 VD1 Positive supply for power stage of channel 1.
28 VD1 Positive supply for power stage of channel 1.
29 VS1 Negative supply for power stage of channel 1.
30 VS1 Negative supply for power stage of channel 1.
31 PWM1 PWM output of channel 1.
32 PWMFB1 Feedback for inner loop of channel 1.
33 SUB Substrate of IMST.
34 VS Negative supply for power stage.
35 VDR2 Positive supply for driver chip of channel 2 with respect to VS2;(VS2+10V).
36 VD2 Positive supply for power stage of channel 2.
37 VD2 Positive supply for power stage of channel 2.
38 VS2 Negative supply for power stage of channel 2.
39 VS2 Negative supply for power stage of channel 2.
40 PWM2 PWM output of channel 2.
41 PWMFB2 Feedback for inner loop of channel 2.
42 ZB2 For estimating the power dissipation in the zobel resister,
this input is sensing the zobel voltage via a resistive network of channel 2.
43 NC
44 FB2 Feedback for global loop of channel 2.
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
14
DRA-CX3
BA05FP (IC502)
BA033FP (IC601)
BR93L86RFVM-WTR (IC505)
SA5532ADR (IC301)
OP275GSR (IC302)
NJM2068MD-TE1 (IC303)
OPA2134UA (IC304,701)
NJM4556AD (IC305)
NJM082D (IC401)
1
2
3
1: Vcc
2: N.C.
3: Vout
FIN: GND
A OUTPUT
A –INPUT
A+INPUT
V
B OUTPUT
V
B –INPUT
B+INPUT
1
2
3
45
7
8
6
1
2
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
15
DRA-CX3
NJM7812FA(SS)-#4MS (IC202)
GP1UM271XK (IC503)
LC72722PM-TLM-E (IC201)
GND
Vcc Vout
Head
Amp
Limiter
Amp BPF Detector &
Comparator Integrator
Hysteresis
Comparator
Vout
Vcc
GND
Pin Assignment
Block Diagram
124VREF SYR
223MPXIN CE
322Vdda DI
421Vssa CL
520FLOUT DO
619CIN
Top view
RDS-ID
718T1 SYNC
817T2 T7
916T3 T6
10 15T4 Vssd
11 14T5 Vddd
12 13XOUT XIN
REFERENCE
VOLTAGE
ANTIALIASING
FILTER
SMOOTHING
FILTER
57 kHz
BPF
(SCF)
TEST
+PLL
(57 kHz)
VREF
CLOCK
RECOVERY
(1187.5 Hz)
DATA
DECODER
SYNC
DETECT-2
SYNC
DETECT-1
OSC/DIVIDER
MEMORY CONTROL CLK(4.332 MHz)
+5V +5V
Vdda
Vssa
MPXIN
T2
T3 to T7
T1
CCB
DI
CE
CL RAM
(24 BLOCK DATA)
ERROR CORRECTION
(SOFT DECISION) SYNC/EC CONTROLLER
DO
XIN XOUT
SYR
SYNC
RDS-ID
Vssd
Vddd
CINFLOUT
VREF
-
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
16
DRA-CX3
NPN Type
DTA114EK
DTC144EK
DTC114YK
DTC323TK
DTA114TK
10kohm 10kohm
10kohm
10kohm
10kohm
10kohm
10kohm
4.7kohm 47kohm
47kohm
KTA1268BL
KTC3200BL
2SA1837 (Y)
2SC4793 (Y)
FRONT
VIEW
B
C
E
FRONT
VIEW
BCE
2SK170 (BL)2SK373 (Y)
2SK369 (BL/GR)-C
FRONT
VIEW
D
G
S
FRONT
VIEW
DGS
DTC114EK
DTC114TK
2.2kohm
R1 R2
R1
R2
E
C
B
PNP Type
DTA114TK
DTA114EK
ı
TRANSISTORS
DTC114EK
DTC114TK
DTC114YK
DTC144EK
DTC323TK
2SA1037K(S/R)
2SC2412K(S)
1SS270A
1SR139-400
MTZJ3.3A
MTZJ5.6A
HZS11B-1
MTZJ16A
MTZJ18A
DIODES (LED included)
SLI-343DU3F (ORG) SLA-360LT3F (XE)
1SR35-400A
2SC4672 KDS160
12
3
1:Emitter
2:Base
3:Collector
12
3
1:Emitter
2:Base
3:Collector
(1) Base
(2) Collector
(3) Emitter
(1) (2) (3)
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
17
DRA-CX3
FL DISPLAY
8BT258GINK (FL 601)
PIN CONNECTION
GRID ASSIGNMENT SEGMENT DESIGNATION
ANODE CONNECTION
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
20
DRA-CX3
NOTE FOR PARTS LIST
•Part indicated with the mark "nsp" are not always in stock and possibly to
take a long period of time for supplying, or in some case supplying of part
may be refused.
•When ordering of part, clearly indicate "1" and "I" (i) to avoid mis-
supplying.
•Ordering part without stating its part number can not be supplied.
•Part indicated with the mark " ★" is not illustrated in the exploded view.
•Not including General-purpose Carbon Film Resistor in the P.W.Board
parts list. (Refer to the Schematic Diagram for those parts.)
•Not including General-purpose Carbon Chip Resistor in the P.W.Board
parts list. (Refer to the Schematic Diagram for those parts.)
WARNING:
Parts marked with this symbol !have critical characteristics.
Use ONLY replacement parts recommended by the manufacturer.
部品表について
１．nsp 印の部品は常時在庫していませんので供給に長時間を要すること
があります。
場合によっては、供給をお断りすることがあります。
２．部品を発注する際は特に数字の " １ " と英字の "Ｉ" との区別をはっき
り記入してください。
３．部品番号を表示していない部品は供給できません。
４．!印の部品は安全上重要な部品です。交換するときは、安全および性
能維持のため必ず指定の部品をご使用ください。
５．★印のついている部品は分解図中には記載していません。
６．汎用カーボン抵抗器は記載していません。定数は回路図を参照願いま
す。
７．汎用カーボンチップ抵抗器は記載していません。定数は回路図を参照
願います。
８．部品表の抵抗器、コンデンサの品名記号の読み方は表を参照してくだ
さい。
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
Other manuals for DRA-CX3
3
Table of contents
Other Denon Stereo Receiver manuals
Denon
Denon AVR-1613 User manual
Denon
Denon AVR-2807 User manual
Denon
Denon AVR 2808CI - AV Receiver User manual
Denon
Denon AVR-X3200W User manual
Denon
Denon AVR-790 User manual
Denon
Denon AVR-3808CI User manual
Denon
Denon DRA-565RD User manual
Denon
Denon AVR-X3400H User manual
Denon
Denon AVR-2308 User manual
Denon
Denon AVR-4810CI User manual
Denon
Denon DRA-395P User manual
Denon
Denon AVR-1611 User guide
Denon
Denon AVR-3805 User manual
Denon
Denon AVR-591 User manual
Denon
Denon AVR-1312 User manual
Denon
Denon AVR-S930H User manual
Denon
Denon AVR-S510BT User manual
Denon
Denon AVR-X1300W User manual
Denon
Denon AVR-3300 User manual
Denon
Denon AVR-4311 User manual
