Denon AVR-2105/885 User manual

SERVICE MANUAL
MODEL AVR-2105/885
AVC-1890
AV SURROUND RECEIVER / AMPLIFIER
Tokyo, Japan
X0206V.01 DE/CDM 0407
For U.S.A., Canada, Europe, U.K.,
Asia, China,Taiwan R.O.C., Korea
& Japan model
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。
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.
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。
補修用性能部品の保有期間は、製造打切後8年です。
注 意
For purposes of improvement, specifications and
design are subject to change without notice.

2
AVR2105/885 / AVC-1890
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.
(1)
(2)
500V
1M
(1)
(2)

3
AVR-2105/885 / AVC-1890
LEVEL DIAGRAMS
FRONT/CENTR/SURROUND/SURROUND BACK
+
DIR
DSP D/A
D/A
D/A
6dB
MUTE
-- +
D/A
HPF
MUTE
+
0dB6CH IN
10dB
20dB
30dB
40dB
6CH IN
0dB
10dB
20dB
30dB
40dB
6CH IN
CD IN
-12dB
---
-30dBFS
-10dBFS
0dBFS
A/D
A/D
-30dBFS
-23dBFS
-20dBFS
-10dBFS
0dBFS
-30dBFS
-20dBFS
-10dBFS
0dBFS
+--
-15dB 15.5dB
15.5dB
MUTE
25.5dB
25.5dB
-35.5dB
ATT
6CH IN
DIGITAL
6CH IN
CD IN
A/D IN
REV AMP
A/D IN
REV AMP
-20dBFS
+
D/A OUT
70.8mV REF
6dB
6dB
D/A OUT
100mV REF
+
D/A OUT
LPF REV AMP
SURR/SB
CENTER
SUM S/W
SW SUM
REV AMP
VOL 00
MUTE
POWER AMP
D/A OUT
100mV REF
-20dB
-10dB
-20dB
-10dB
TONE CONTROL
-18dB
H/P OUT
(200mV)
(200mV)
FRONT
A/D IN
REV AMP
INPUT
BUFFER
AMP
DSP OUT
-18dB
VOL 00
PRE AMP
SPK OUT
FRONT
2.83V
(1W/8ohm)
CENTER
SURROUND
SURROUND BACK
SPK OUT
CENTER
SURROUND
SPK OUT
2.83V
(1W/8ohm)
H/P OUT
47mV
(0.27mW/8ohm)
SPK OUT
FRONT

4
AVR-2105/885 / AVC-1890
SUB WOORER
OdB
D/A
LFE
-- +
D/A
LFE
6dB
MUTE MUTE
6CH IN
-30dB
-20dB
-5dB
30dB
DSP OUT
-20dBFS
6dB
+--
VOL 00
21.5dB
-10dB
20dB
10dB
-30dBFS
-10dBFS
0dBFS
Front D/A Out
100mV ref
D/A OUT
LPF REV AMP SW SUM
REV AMP
SUB WOOFER
PRE OUT
SUB WOOFER
PRE OUT
373mV
(112mV)
(200mV)
Config1 -38dBFS
10.5dB
TO FRONT CH
6CH INPUT
SUB_WOOFER
Config2 -28dBFS
10dB -18dB
PRE AMP

5
AVR-2105/885 / AVC-1890
FRONT VS SW
+
A/D
A/D
DIR
+--
6CH IN (200mV)
DIGITAL
CD IN
6CH IN
-12dB
A/D IN
REV AMP
A/D IN
REV AMP
A/D IN
REV AMP
HPF
D/A OUT
LPF
-31.2dB
MUTE
REV AMP
SUM S/W
SW SUM
REV AMP
-11.66dB
ELECTRIC
VOLUME
21.56dB up
PRE AMP
-13.14dB
MUTE
POWER AMP
-35.5dB down
-20dB
-10dB
0dB
10dB
20dB
30dB
40dB
6CH IN
CD IN +
INPUT
BUFFER
AMP
---
0dBFS
DSP with
Tone control
-38dBFS
-30dBFS
SW
-20dBFS
-10dBFS
Front
0dBFS
D/A
-13.2dB
--
1.54dB up
-16.7dB 18dB down
+
ATT
-20dBFS
18dB down
16.6dB up
-13.06dB
26.02 dB up
-30dBFS
-10dBFS
FRONT
6.8dB up
Config1
6.8dB up
D/A
-34.7dB
-29.66dB
14.5dB up H/P OUT
73mV
SPK OUT
FRONT
4.35V
H/P OUT
SPK OUT
FRONT
FRONT VS SW
D/A OUT
100mV REF

6
AVR-2105/885 / AVC-1890
BLOCK DIAGRAM
Y
FM
+
2
15
9
13 4
9
Y
SW
12
+
+
C
Y
Y
&
+
+
CB
fs
1
-
-
15
Y
414
15
4
Cr
13
Y
14
12
SR
SL
C
+
+
+
+
+
L
LINE_2
DSDATA4 DSDATA2
IN
DAI_P13(80)
< AVR1805 E2,G2A,E3,EK,G1C,G1K >
LINE_1
CB
LINE_2
CB
LINE_3
CR
E3 ONLY
EX_SW
EX_SL
R
+
Selector
HPF
DATA
256fs
ADC
PD/RST
Y
MUTING
L.P.F
FM & AM
TA1270
64fs
V.AUX
VCR2
V.AUX
TV/DBS
VCR
RMC GND
FCX10-03
25MHz
INH
+
+
+
Y
OUT
Cr
-
+5.6V
Q1022
-
-
12
Q1028
13
2
1
Y/C
EX_C
EX_SR
EX_FL
CXP 740010
RESONATOR
13
ÝÂ×î
KEY_MATRIX
14
IC1008
DIR
TUNER
AVR
-36V
TC94A27UG
TC94A27UG
LC75721NE
7809
7906
MAIN +B
+
7805
SBR
-
+
SURR L
-
+
-
+
SBR
VCR
LINE_2
LINE_3
CR
LINE_3
LINE_1
CR
LINE_1
CB
LINE_2
AM ANT
FM ANT
VCR2
VCR1
V.AUX
TUNER
TV/DBS
CD
COAXIAL
EX_SR
EX_FR
EX_FL
EX_C
+
12.288MHz
+
INPUT
DIR
PLL CIRCUIT
AM TUNING
IF FILTER
--
fs
64fs
CR
ADC
MPX IC
DIGITAL
FILTER
DIGITAL
FILTER
SERIAL DATA
I/O PORT
Y/Cb/Cr
64fs
TV/DBS
VCR1
DVD/VDP
VCR2
VCR1
TV/DBS
CXA1511M
MUTE
+
+
+
+
+
RAM
C
IC1004
5
3
S-VIDEO DET
+5.6V
-
Q1012
53
Q1027
C
MIX
Cb
EX_SL
EX_FR
u-COM
12MHz
Y
AMP
Y/C
Q1014
FL DRIVER
DSP
u-COM
DSP
VOLUME
FL DRIVER
7806
7915
7805
7815
MAIN -B
+
FILAMENT AC
-
+
+
SBL
CENTER
-
+SURR R
-
+
+
-
+
-
SW
SL
SR
SBL
FL
SPK A
MIC IN
PHONO
ADIN(24)
SLRCK(23)
LINE_3
LINE_1
IF IC
ALRCLK/FSTDM
DSDATA3
DSDATA1
DAI_P15(82) DAI_P14(81)
Cb
REMOTE CONT
IN/OUT
MUTE
-
H/P OUT
FR
SPK B
TV/DBS
ANALOG OUT
REC_SWITCHIG INPUT_SWITCHIG
XIN
Lock Detect Selector
VOLUMEDLRCLK
MCLK
VOLUME
DBCLK
RDATA(21)
RMCK(16)
74LCX244
VIDEO SWITCH BA7626
DVD/VDP
VCR2 OUT
INH
C-VIDEO INPUT
DVD/VDP
DAC
DAI_P11(78)
NJM2274R
COMPONENT DET
+5.6V
SW F SUM
DATA
1.2V
CODEC
TC90A69F
+5V(A/DPOWER)
DSP_FR
ANA_IN
ANA_IN
DATA
JAPAN ONLY
DVD/VDP
ANALOG IN
DIGITAL IN
LOOP FILTER
FROM u-COM
FRONTEND
IF AMP
+
TC9274-011 TC9273-004
DEMODULATION
D-VIDEO OUTPUT
IF FILTER
CODEC
AD1837
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
ASDATA
SBCK(22)
RBCK(17)
RLRCK(20)
BUFFER
VCR1 OUT
VCR2 OUT
VCR1 OUT
S-VIDEO INPUT
VIDEO SWITCH BA7626
VIDEO SWITCH BA7626
VIDEO SWITCH
COMP-VIDEO
INPUT
RELAY
DAC
DIGITAL
FILTER DAC
DIGITAL
FILTER DAC
SELECTOR
74LVX157
ADSP-21266
DAI_P10(77)
DAI_P9(71)
DAI_P12(79)
ROM
128K X 8 128K X 8
MONITOR OUT
IC1001
IC1001
IC1007
IC606
OSD
LC74781
IC1001
C-VIDEO DET
IC1008
RMC DATA
TA1270
Y/Cb/Cr
TUNER PLL
MONITOR OUT
3.3V
IC1004
VIDEO POWER
VIDEO POWER
FUNCTION,OP AMP
7805
FUNCTION,OP AMP
RELAY B+
MONITOR OUT
FLT
EX_SW
CENTER
ANA_HFP
AUDIO SWITCHING
ANA_HFP
TC9164
FLT DRIVER
16-ST-66GNK
POWER S/W (1ó-)
DIGITAL OUT
LC89057W-VF4
VOLUME
CONTROL PORT
ABCLK
RMC IN/OUT
VIDEO SWITCH BA7626
DIGITAL
FILTER
CLOCK
DIGITAL
FILTER
DAI_P16(86)
DAI_P20(94)
CLK_IN(142)
DIGITAL AUDIO DECODER
IC74781_19PIN
SEP OUT
IC74781_5PIN
BLANK OUT
VIDEO POWER
COMP-VIDEO
DSP_FL
FL DISPLAY
RELAY
D-VIDEO INPUT
(JAPAN ONLY)
OPTICAL_4
OPTICAL_3
CONTROL DATA
FRONT A L
6CH_INPUT
MULTI OUT
VCR2 OUT
VCR1 OUT
CDR/TAPE OUT
DVD/VDP
CDR/TAPE
FROM MICOM
OPTICAL_2
OPTICAL_1
POWER S/W (2ó-)
+5V (DSP PART PWR)
Switched
INPUT
POWER AMP
DIGITAL AUDIO
FRONT B R
FRONT B L
FRONT A R
SPEAKER OUT
PRE OUT

7
AVR-2105/885 / AVC1890
CAUTIONINSERVICING
●InitializingAVSURROUNDRECEIVER
AVSURROUNDRECEIVERinitializationshouldbe
performedwhenthemcom,peripheralpartsofmcom,
andDSPP.W.B.arereplaced.
1. Switchofftheunit.
2. HoldthefollowingSPEAKERS-Abuttonand
SPEAKERS-Bbutton,andswitchontheunit.
3. Checkthattheentiredisplayisflashingwith
anintervalofabout1second,andreleaseyour
fingersfromthe2buttonsandthemicroprocessor
willbeinitialized
Note:・Ifstep3doesnotwork,startoverfromstep1.
・Allusersettingswillbelostandthisfactorysetting
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
●AVサラウンドアンプの初期化について
マイコンやマイコン周辺部品、DSP 基板等を交換した場
合は、AV サラウンドアンプの初期化を行って下さい。
1. オン／オフボタンを OFF にします。
2. SPEAKERS-Aボタンと SPEAKERS-Bボタンを同時
に押しながら、オン／オフボタンを押して 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。

8
AVR-2105/885 / AVC-1890
ADJUSTMENT
Audio Section
Idling Current
Required measurement equipment : DC Voltmeter
調整に必要な測定器:直流電圧計
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.)
(1)セットをクーラ、扇風機のそばなど風通しの良い場所を避け、通常の使用状態に置きます。セットの周囲温度は
15〜30℃、湿度は常湿とします。
Adjustment
(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106,107 on SURR.-BACK ch Amp.
Unit at full counterclockwise ( ) position.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP104, FRONT-Rch: TP105, CENTER ch: TP103,
SURROUND-Lch:TP101, SURROUND-Rch:TP102, SURROUND-BACK Lch:TP106, SURROUND-BACK Rch:TP107).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting. MASTER VOLUME : "---" counterclockwise ( min.)
MODE : 7CH STEREO
FUNCTION : CD
(5) Within 2 minutes after the power on, turn VR101 clockwise ( ) 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 2.5 mV ±0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
(1)上カバーをはずし、パワーアンプ基板のVR101,VR102,VR103,VR104,VR105及びSurr.Backアンプ基板のVR106,107を
反時計方向( )に回し切った状態にセットします。
(2)テストポイント(FRONT‑Lch: TP104, FRONT‑Rch: TP105, CENTER ch: TP103, SURROUND‑Lch: TP101,
SURROUND‑Rch:TP102,SURROUND‑BACKLch:TP106,SURROUND‑BACKRch:TP107)に直流電圧計を接続します。
(3)電源コードをAC100V（95〜105Vの範囲でも可）に接続し、電源スイッチを"ON"にします。
(4)ＯＮ後、次のようにセットします。
●VOLUME（音量調節つまみ）→反時計方向( )に回す、最小の状態にする。
●SPEAKER‑A（スピーカ端子）→無負荷（スピーカ、ダミー抵抗器などを接続しない。）
MODE:7CHSTEREO
FUNCTION:CD
(5)2分以内にVR101を時計方向( )に回しテストポイントの電圧を次のように調整します。
1.5mV±0.5mVDC
(6)予備調整から10分後VR101を回し、次のように電圧を設定します。
2.5mV±0.5mVDC
(7)同じ方法で各チャネルの可変抵抗を調整します。
VR104
TP104
VR105
TP105
VR107
VR106
TP107
TP106
S BR
S BL
S Rch
VR102
TP102
VR103,TP103
C ch
VR101,TP101
F Lch
S Lch
F Rch
DC Voltmeter

9
AVR-2105/885 / AVC-1890
Video Section (For U.S.A., Canada & Japan)
Component Video Level Adjustment
Required measurement equipment etc: Oscilloscope, DVD
VIDEO PLAYER (ex: DVD-1500)
Test Disc: DVD T-S01
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) Playback the color-bar 75% of the Test Disc (Title 12)
using the DVD Video Player, and check that Y and C
levels of the S terminal output are within the specified
output levels.
If they are out of the specified levels, adjust with the
variable resister inside of the unit.
(3) Presetting
POWER (Power source switch) OFF
SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
DVD (Video terminal) No input
Adjustment
(1) Remove top cover and set VR608, VR609, VR610 on
C-S VIDEO2 Unit at fully counterclockwise ( ).
(2) Connect a pin-plug terminated with 75-ohms to Y(Cb,
Cr) of the Component Video Monitor Output, and hook
up the Oscilloscope's probe to both ends of the pin-plug.
(3) Connect S terminal output of the DVD Player with the
DVD input terminal of the Receiver.
(4) Connect power cord to AC Line, and turn power switch
"ON".
(5) Presetting
FUNCTION: DVD

Playback the color-bar 75% of the Test Disc (Title 12)
(6) Turn VR610 clockwise ( ) to adjust the
COMPONENT VideoY voltage (except H.Sync) to 714
±50 mVp-p. (Refer to Fig.1)
(7) Adjust the Variable Resistors of Cr: VR609 and Cb:
VR608 in the same way. (Refer to Fig. 2, 3)
Cb,Cr: 486±50 mVp-p. (U.S.A. & Canada model)
525±50 mVp-p. (Others)
: Oscilloscope, DVD VIDEO PLAYER
(: DVD-1500)
: DVD T-S01
(1)
15 30
(2) DVD VIDEO PLAYER
75 (Title12) S Y C
(3)
OFF

( )
DVD
(1) C-S VIDEO2
( )
(2) Y(Cb, Cr) 75
Oscilloscope
(3) DVD VIDEO PLAYER SDVD
(4)
"ON"
(5) ON
FUNCTION DVD
75 (Title12)
(6) VR610 ( )
Y(H.Sync )(Fig.1 )
714mV ±50mVp-p
(7) Cr: VR609 Cb: VR608
(Fig.2 3 )
Cb,Cr: 525±50 mVp-p.
VR608, VR609, VR610

10
AVR-2105/885 / AVC-1890
Oscilloscope
VR610 VR608
VR609
Video Section
MONITOR OUT
(Y, Cb, Cr)
CrYCb

11
AVR-2105/885 / AVC-1890
714±50mV
p-p
Volts IRE:FLT Y-Signal
-20.0 -10.0 0.0 10.0 20.0 30.0
0.5 0.0
100.0
0.5
40.0 50.0 60.0
486±50mV (U.S.A. & Canada model)
p-p
Volts IRE:FLT
0.0 20.0 40.0
-0.5
-50.0
50.0
0.0
0.5
0.0
60.0 80.0
486±50mV (U.S.A. & Canada model)
p-p
Volts IRE:FLT
0.0 20.0 40.0
-0.5
-50.0
50.0
0.0
0.5
0.0
60.0 80.0
Fig.1 Component Video Y signal
Fig.2 Cb signal
Fig.3 Cr signal

12
AVR-2105/885 / AVC-1890
SEMICONDUCTORS
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。
PIN
No. PIN NAME I/O FUNCTION
1 9274 STB O TC9274 CONTROL
2 9274 73 9164 CLK O TC9274/TC9273/TC9164 CLOCK
3 9274 73 9164 DATA O TC9274/TC9273/TC9164 DATA
4 FRONT MUTE O FRONT MUTE
5 9273 CE O TC9273 CONTROL
6 ERR_MUTE O ERR MUTE
7 ERR_MUTE_OFF O ERR MUTE OFF
8 BSE O DIGITAL SIGNAL MUTE
9 89057_EMPHA I LC89057 CONTROL
10 SW_SUM O SW SUMMING CONTROL
11 SHARC_SDIN I SHARC EX(DSP) DATA INPUT
12 89057_SDIN I LC89057 CONTROL
13 EPROM_RESET O EPROM RESET
14 89057_RESET O LC89057 RESET
15 SHARC_CS O SHARC EX(DSP) CS
16 SHARC_SDOUT O SHARC EX(DSP) DATA OUTPUT
17 89057_CE O LC89057 CONTROL
18 89057/1837_SDOUT O CONTROL DATA
19 89057/1837_SCLK O CONTROL CLOCK
20 1837_RESET O CODEC RESET
21 9164_STB O TC9164 CONTROL
22 SW_MUTE O SW MUTE
23 RELAY_SURR_B O SURROUND BACK RELAY
24 RELAY_FRONT_A O FRONT A RELAY
25 RELAY_SURR O SURROUND RELAY
26 RELAY_CNT O CENTER RELAY


IC’s
CXP740010
(IC201)
PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
PK7/TO1
RST
V
SS
XTAL
EXTAL
PK6/CS0
PK5/SI0
PK4/SO0
PK3/SCK0
PF7/AN11 PF6/AN10
PF5/AN9
PC6 PC7 PA0 PA1 PA2 PA3 PA4 PA5 PA6 PA7 NC V
DD
V
SS
PK1/TX PK2/TEX PI1/RMC PI2/NMI PI3/TO0/ADJ PI4/INT1/CS1 PI5/SCK1
PC5
PC4
PC3
PC2
PC1
PC0
PB7/SI2
PB6/SO2
PB5/SCK2
PB4/TO2
PB3
PB2
PB1
PB0
PJ7
PJ6
PJ5
PJ4
PJ3
PJ2
PJ1
PJ0
PD7
PD6
PD5
PD4
PD3
PD2
PD1
PD0
PI6/SO1
PI7/SI1
PE0/INT0
PE1/INT2
PE2/PWM0
PE3/PWM1
PE4
PE5
PE6
PE7
PG0/TxD
PG1/RxD
PG2/EC0
PG3/EC1
PG4/EC2
PG5/INT3
PG6/INT4
PG7/CINT
AN0
AN1
AN2
AN3
PF0/AN4
PF1/AN5
PF2/AN6
PF3/AN7
AV
DD
AV REF
AV SS
PF4/AN8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
31
32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
100
99 98 97 96 95 94 93 92 91
90 89 88 87 86 85 84 83 82 81
21
22
23
24
25
26
27
28
29
30
80
79
78
77
76
75
74
73
72
71
70
69
68
67
66
65
64
63
62
61
60
59
58
57
56
55
54
53
52
51
TOP VIEW
CXP740096 Terminal Function

13
AVR-2105/885 / AVC-1890
27 RELAY_H/P O RELAY H/P
28 FUNC_UP O ENCODER INPUT (FUNCTION)
29 H/P_DETECT I DETECT H/P
30 FUNC_DOWN O ENCODER INPUT (FUNCTION)
31 SURR_SB_MUTE O SURROUND BACK MUTE
32 CNT_MUTE O CENTER MUTE
33 TA1270_TC90A69F_CLK O TA1270/TC90A69F CONTROL
34 SURR_MUTE O SURROUND MUTE
35 NC - -
36 MULTI SB RLY O ZONE2/SURROUND BACK : SELECTION RELAY
37 RELAY_FRONT_B O FRONT B RELAY
38 FL_DRV_RST O LC75721 RESET
39 RELAY_POWER O POWER RELAY
40 RESET I RESET
41 GND - GND
42 XTAL - OSILATOR CONECTION
43 EXTAL - OSILATOR CONECTION
44 FL_DRV_CE O LC75721 CE
45 FL_DRV_DATA O LC75721 DATA
46 FL_DRV/2090_CLK O LC75721/BU2090 CLOCK
47 2090_DATA O BU2090 DATA
48 VOL_DOWN I ENCODER INPUT (VOLUME)
49 VOL_UP I ENCODER INPUT (VOLUME)
50 SEL_DOWN I ENCODER INPUT (SELECTOR)
51 SEL_UP I ENCODER INPUT (SELECTOR)
52 AVSS - AVSS
53 VREF - VREF
54 AVDD - AVDD
55 89057_INT - LC89057 INT
56 TA1270_TC90A69 DATA O TA1270/TC90A69 DATA
57 GREEN_LED O GREEN LED
58 SET_OPT I MODEL SELECT
59 STEP_OPT I AREA SELECT
60 KEY_IN3 I KEY INPUT
61 KEY_IN2 I KEY INPUT
62 KEY_IN1 I KEY INPUT
63 PWR_DOWN I POWER DOWN DETECT
64 PROTECT I PROTECTION
65 C-VIDEO_DET I Composit Signal Detect input
66 SHARC_SCLK O SHARC EX(DSP) SCLK
67 1837_CE O CODEC CE
68 SHARC_RESET O SHARC EX(DSP) RESET
69 FRONT_MUTE O FRONT MUTE
70 STBY_LED O STANDBY LED
71 NC - -
72 NC - -
73 74781 CS - LC74781 CONTROL ENABLE
74 74781 SCLK O LC74781 CONTROL CLOCK
75 SURR_BACK_MUTE O SURROUND BACK MUTE
76 2090 CLK2 O BU2090 CLOCK2(VIDEO)
77 RDS_DATA I TDA7330 CONTROL DATA
78 RDS_CLK I TDA7330 CLOCK DATA
79 FLAG3 I Special flag for ROM updata
80 FLAG2 I DSP operation check flag
81 FLAG1 I NON USE
82 FLAG0 I EPROM chip select control for DSP
83 MULTI MUTE O MULTI MUTE
84 S-VIDEO_DET I S Signal Detect input
85 REMOCON I REMOTE CONTROL SIGNAL INPUT
86 COPM_DET I Compornent Signal input
PIN
No. PIN NAME I/O FUNCTION

14
AVR-2105/885 / AVC-1890
87 OVERLOAD I OVERLOAD DETECT
88 VSS - VSS
89 VDD(BACK UP) - VDD FOR BACK UP
90 NC - -
91 TC94A27UG_STB - TC94A27UG CONTROL
92 TC94A27UG_PLL_DATA O PLL CONTROL (LC72131),DATA (TC94A27UG)
93 TC94A27UG_PLL_CLK O PLL CONTROL (LC72131),CLOCK (TC94A27UG)
94 PLL_DT_IN I PLL CONTROL (LC72131)
95 TU_MUTE O TUNER MUTE
96 ST I STEREO DETECT
97 TUNED I TUNE DETECT
98 PLL_CE O PLL CONTROL (LC72131)
99 2090_CLK1 O BU2090 CLOCK(VIDEO)
100 2090_74781_DATA O BU2090/LC74781 CONTROL DATA(VIDEO)
PIN
No. PIN NAME I/O FUNCTION

15
AVR-2105/885 / AVC-1890
ADSP-21266SKSTZ-2B (IC804)
ADSP-21266SKSTZ-2B Terminal Function
1
36
37
73
72
108
144 109
TOP VIEW
PIN 1 INDICATOR
Pin Name
LQFP
Pin # Pin Name
LQFP
Pin # Pin Name
LQFP
Pin # Pin Name
LQFP
Pin #
V
DDINT
1V
DDINT
37 V
DDEXT
73 GND 109
CLKCFG0 2 GND 38 GND 74 V
DDINT
110
CLKCFG1 3 RD 39 V
DDINT
75 GND 111
BOOTCFG0 4 ALE 40 GND 76 V
DDINT
112
BOOTCFG1 5 AD15 41 DAI_P10 (SD2B) 77 GND 113
GND 6 AD14 42 DAI_P11 (SD3A) 78 V
DDINT
114
V
DDEXT
7 AD13 43 DAI_P12 (SD3B) 79 GND 115
GND 8 GND 44 DAI_P13 (SCLK23) 80 V
DDEXT
116
V
DDINT
9V
DDEXT
45 DAI_P14 (SFS23) 81 GND 117
GND 10 AD12 46 DAI_P15 (SD4A) 82 V
DDINT
118
V
DDINT
11 V
DDINT
47 V
DDINT
83 GND 119
GND 12 GND 48 GND 84 V
DDINT
120
V
DDINT
13 AD11 49 GND 85 RESET 121
GND 14 AD10 50 DAI_P16 (SD4B) 86 SPIDS 122
FLAG0 15 AD9 51 DAI_P17 (SD5A) 87 GND 123
FLAG1 16 AD8 52 DAI_P18 (SD5B) 88 V
DDINT
124
AD7 17 DAI_P1 (SD0A) 53 DAI_P19 (SCLK45) 89 SPICLK 125
GND 18 V
DDINT
54 V
DDINT
90 MISO 126
V
DDINT
19 GND 55 GND 91 MOSI 127
GND 20 DAI_P2 (SD0B) 56 GND 92 GND 128
V
DDEXT
21 DAI_P3 (SCLK0) 57 V
DDEXT
93 V
DDINT
129
GND 22 GND 58 DAI_P20 (SFS45) 94 V
DDEXT
130
V
DDINT
23 V
DDEXT
59 GND 95 A
VDD
131
AD6 24 V
DDINT
60 V
DDINT
96 A
VSS
132
AD5 25 GND 61 FLAG2 97 GND 133
AD4 26 DAI_P4 (SFS0) 62 FLAG3 98 CLKOUT 134
V
DDINT
27 DAI_P5 (SD1A) 63 V
DDINT
99 EMU 135
GND 28 DAI_P6 (SD1B) 64 GND 100 TDO 136
AD3 29 DAI_P7 (SCLK1) 65 V
DDINT
101 TDI 137
AD2 30 V
DDINT
66 GND 102 TRST 138
V
DDEXT
31 GND 67 V
DDINT
103 TCK 139
GND 32 V
DDINT
68 GND 104 TMS 140
AD1 33 GND 69 V
DDINT
105 GND 141
AD0 34 DAI_P8 (SFS1) 70 GND 106 CLKIN 142
WR 35 DAI_P9 (SD2A) 71 V
DDINT
107 XTAL 143
V
DDINT
36 V
DDINT
72 V
DDINT
108 V
DDEXT
144

16
AVR-2105/885 / AVC-1890
AD1837 (IC808)
AD1837 Terminal Function
DescriptionPin No. Pin Name Input/
Output
1,39 DVDD Digital Power Supply. Connect to digital 5V supply.
2 CLATCH I Latch Input for Control Data
33 CIN I Serial Control Input
4 PD/RST I Power-Down/Reset
5,10,16,24,30,35 AGND Analog Ground
6,12,25,31 NC Not connected
7,13,26,32 OUTLx O DACx Left Channel Output
8,14,27,33 NC Not connected
9,15,28,34 OUTRx O DACx Right Channel Output
11,19,29 AVDD Analog Power Supply. Connect to analog 5V supply.
17 FILTD Filter Capacitor Connection. Recommend 10µF/100nF.
18 FILTR Reference Filter Capacitor Connection. Recommended 10µF/100nF.
20 ADCLN I ADC Left Channel Negative Input
21 ADCLP I ADC Left Channel Positive Input
22 ADCRN I ADC Right Channel Negative Input
23 ADCRP I ADC Right Channel Positive Input
36 M/S I ADC Master/Slave Select
37 DLRCLK I/O DAC LR Clock
38 DBCLK I/O DAC Bit Clock
40,52 DGND Digital Ground
41-44 DSDATAx I DACx Input Data (Left and Right Supply)
45 ABCLK I/O ADC Bit Clock
46 ALRCLK I/O ADC LR Clock
47 MCLK I Master Clock Input
48 ADVDD Digital Output Driver Power Supply
49 ASDATA O ADC Serial Data Output
50 COUT O Output for Control Data
51 CCLK I Control Clock Input for Control Data
1
2
3
4
5
6
7
8
9
10
11
12
13
AGND
AVDD
OUTR2
NC
OUTL2
NC
OUTR1
NC
OUTL1
NC
PD/RST
CIN
CLATCH
DVDD
NC
OUTL3
NC
OUTR3
NC
OUTL4
NC
OUTR4
AGND
DLRCLK
DBCLK
DGND
14 15 16 17 18 19 20 21 22 23 24 25 26
27
28
29
30
31
32
33
34
35
36
37
38
39
52 51 50 49 48 47 46 45 44 43 42 41 40
FILTD FILTR
AGND
M/S
AGND
AVDD
ADCLN
ADCLP
ADCRN
ADCRP
AGND
AGND
DGND CCLK COUT ASDATA ODVDD MCLK ALRCLK ABCLK DSDATA4 DSDATA3 DSDATA2 DSDATA1
DVDD
AVDD
TOP VIEW
OUTL1
CONTROL PORT CLOCK
FILTD
FILTR
ADCLP
ADCLN
ADCRP
ADCRN
DLRCLK
DBCLK
DSDATA1
DSDATA2
DSDATA3
DSDATA4
MCLKASDATAABCLKALRCLKODVDDDVDD DVDD
DGND AGND AGND AGND AGNDDGND
CINCLATCHCCLK COUT
DIGITAL
FILTER
PD/RST M/S AVDD AVDD
VOLUME
OUTR1
OUTL2
OUTR2
OUTL3
OUTR3
OUTL4
OUTR4
AD1837
DIGITAL
FILTER
SERIAL DATA
I/O PORT VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
VOLUME
DIGITAL
FILTER
DIGITAL
FILTER
DIGITAL
FILTER
DIGITAL
FILTER
VREF
Σ-∆
ADC
Σ-∆
ADC
Σ-∆
DAC
Σ-∆
DAC
Σ-∆
DAC
Σ-∆
DAC

17
AVR-2105/885 / AVC-1890
LC89057W (IC807)
LC89057W Terminal Function
Function
Pin
No. Pin Name
1 RXOUT O Input bi-phase select data output terminal
2 RX0 I TTL compatible digital data input terminal
3 RX1 I Coaxial compatible amp built-in digital data input terminal
4 RX2 I TTL compatible digital data input terminal
5 RX3 I TTL compatible digital data input terminal
6 DGND — Digital GND
7 DVDD — Digital power
8 RX4 I TTL compatible digital data input terminal
9 RX5/VI I TTL compatible digital data/Validity flag input terminal for modulation
10 RX6/UI I TTL compatible digital data/User data input terminal for modulation
11 DVDD — Digital power for PLL
12 DGND — Digital GND for PLL
13 LPF O PLL loop filter connecting terminal
14 AVDD — Analog power for PLL
15 AGND — Analog GND for PLL
16 RMCK O RMCK clock output terminal (256fs, 512fs, XIN, VCO)
17 RBCK O/I RBCK clock in/output terminal (64fs)
18 DGND — Digital GND
19 DVDD — Digital power
20 RLRCK O/I RLRCK clock in/output terminal (fs)
21 RDATA O Serial audio data output terminal
22 SBCK O SBCK clock output terminal (32fs, 64fs, 128fs)
23 SLRCK O SLRCK clock output terminal (fs/2, fs, 2fs)
24 SDIN I Serial audio data input terminal
25 DGND — Digital GND
26 DVDD — Digital power
27 XMCK O Osc. amp output terminal
I/O
36 RERR1RXOUT 35 INT2RX0 34 CKST3RX1 33 AUDIO/VO4RX2 32 EMPHA/UO5RX3 31 DGND6DGND 30 DVDD7DVDD 29 XIN8RX4 28 XOUT9RX5/VI 27 XMCK10RX6/UI 26 DVDD11DVDD 25 DGND12DGND
24 SDIN37DO
23 SLRCK38DI
22 SBCK39CE
21 RD ATA40CL
20 RLRCK41XMODE
19 DVDD42DGND
18 DGND43DVDD
17 RBCK44TMCK/PIO0
16 RMCK45TBCK/PIO1
15 AGND46TLRCK/PIO2
14 AVDD47TDATA/PIO3
13 LPF48TXO/PIOEN
TOP VIEW
1 RXOUT
32
EMPHA/UO
33
AUDIO/VO
35
INT
40
CL
39
CE
38
DI
28
XOUT
29
XIN
27
XMCK
34
CKST
41
XMODE
Input
Selector
2
RX0
3
RX1
4
RX2
5
RX3
8
RX4
9
RX5/VI
10
RX6/UI
37
DO
36
RERR
21
RD ATA
24
SDIN
16
RMCK
17 RBCK
20
RLRCK
22
SBCK
23
SLRCK
13
LPF
44
TMCK/PIO0
45
TBCK/PIO1
46
TLRCK/PIO2
47
TDATA/PIO3
48
TXO/PIOEN
Clock
Selector
C bit, U bit
PLL
Demodulation
&
Lock Detect
Microcontroller
I/F
Data
Selector
I/N
Modulation
or
Parallel Port

18
AVR-2105/885 / AVC-1890
TC94A27UG (IC201T,202T)
Function
Pin
No. Pin Name I/O
* For latch-up countermeasure, perform each power supply ON/OFF in the same timing.
28 XOUT O X’tal osc. connecting output terminal
29 XIN I X’tal osc. connection, external clock input terminal (24.576MHz or 12.288MHz)
30 DVDD — Digital power
31 DGND — Digital GND
32 EMPHA/UO I/O Emphasis information/U-data output/Chip address setting terminal
33 AUDIO/VO I/O Non-PCM detect/V-flag output/ Chip address setting terminal
34 CKST I/O Clock switch transition period output/Demodulation master or slave function switching terminal
35 INT I/O Interrupt output for µcom (Interrupt factor selectable)/Modulation or general I/O switching terminal
36 RERR O PLL lock error, data error flag output
37 DO O µcom I/F, read out data output terminal (3-state)
38 DI I µcom I/F, write data input terminal
39 CE I µcom I/F, chip enable input terminal
40 CL I µcom I/F, clock input terminal
41 XMODE I System reset input terminal
42 DGND — Digital GND
43 DVDD — Digital power
44 TMCK/PIO0 I/O 256fs system clock input for modulation/General I/O in/output terminal
45 TBCK/PIO1 I/O 64fs bit clock input for modulation/General I/O in/output terminal
46 TLRCK/PIO2 I/O fs clock input for modulation/General I/O in/output terminal
47 TDATA/PIO3 I/O Serial audio data input for modulation/General I/O in/output terminal
48 TXO/PIOEN O/I Modulation data output/ General I/O enable input terminal
NC
L‑TVR‑REFB
L‑TVR‑1NB
L‑MVR‑1NB
L‑MVR‑OUTB
L‑TVR‑OUTB
L‑MVR‑AGNDB2
L‑MVR‑AGNDARE
L‑MVR‑AGNDARE
L‑MVR‑AGNDA2
NC
L‑MVR‑AGNDB1
NC
12
1110
9
87654321
13
14
15
16
17
19
18
20
21
22
44
43
42
41
40
39
37
38
36
35
34
23
24
25
26
27
30 29 28 31
3233
R‑TVR‑REFB
R‑TVR‑1NB
R‑MVR‑1NB
R‑MVR‑OUTB
R‑TVR‑OUTB
R‑MVR‑AGNDB2
R‑MVR‑AGNDA1
R‑MVR‑AGNDA2
R‑MVR‑OUTA
NC
R‑MVR‑AGNDB1
L‑MVR‑INA R‑MVR‑INA L‑TVR‑INA L‑TVR‑OUTA
L‑TVR‑REPA R‑TVR‑REF
R‑TVR‑INA
R‑TVR‑OUTA
NC
CS1
VDD
TEST
GND
MUTEM
CS2
CK
MUTE
VSS
STB
DATA
LatchLatch
Levelshiftcircuit
Test&
autoclearcircuit
Timing
generating
circuit
Latch
Latch
LatchLatch Latch
Latch
Latch Latch Latch
Decodercircuit
24bitshiftregister
Decodercircuit
Latch

19
AVR-2105/885 / AVC-1890
AS7C34096A-10TC (IC806,817)
14 15
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
COLUMN
DECODER
ROW DECODER
SENSE AMPS
INPUT BUFFER
DOWN
WE
OE
I/O
0
I/O
1
I/O
2
I/O
3
512K x 8
ARRAY
I/O
7
I/O
6
I/O
5
I/O
4
A
0
A
11
A
13
A
12
A
CE
A A
16
A
17
A
9
A
18
A
10
Top View
A
1
A
2
A
3
A
4
A
5
A
6
A
7
A
8
WE
V
CC
V
SS
A
18
A
15
A
12
A
14
I/O
5
I/O
4
A
9
A
0
I/O
0
I/O
1
I/O
2
I/O
3
OE
A
17
A
16
A
13
CE
NC
NC
NC
NC
I/O
7
I/O
6
V
CC
V
SS
A
10
A
11
NC
NC
NC
NC
NC
NC
1
2
3
4
5
6
7
837
40
39
38
41
44
43
42
9
10
11
14 31
32
36
35
34
33
12
13
16
15
29
30
18
19
20
21
22
17
27
26
25
24
23
28
POWER
NJM2274R (IC1007)
TC90A69F (IC1009)
1
2
3
45
7
8
6
TOP
VIEW
1Yin
Cin
7
C Mute CTL
2
GND
Disc.
Vref
7
Power Save CTL
2
Vcc
Clamp
8 Bias
++
Vsag4
3 Vout
750
ohm
1
BIAS VB1
2
VRT
27
COUT
3
VDD1
26
VSS1
4
TESTI1
25
YOUT
5
VSS2
24
VB2
6
VRB
23
PD
7
YCIN
22
FIL
8
TEST
21
VSS4
9
KILLER
20
VDD4
10
TESTI2
19
FSC
11
VDD3
18
TESTOUT
12
VSS3
17
MODE1
13
VDD2
16
SDA
14
TESTI3
15
SCL
CORING
PEAKING
DAC
1/8
(8fsc) 8fsc 4fsc
DAC IIC BUS
28
PLL DET 1/2VCO
Ped.
CLIP
LPF
DELAY
CNR
C-N.C
CORING V-ENHANCER
KILLER
DYNAMIC COMB FILTER
Sync. Clamp
ADC
LINE
MEMORY
LINE
MEMORY
INTERPOLATION

20
AVR-2105/885 / AVC-1890
TA1270BF (IC1154)
39
40
41
42
43
44
45
46
47
48
1
DAC1
Y INPUT
DAC Vcc (5V)
C Vcc (5V)
UV/CbCr SW
fsc OUTPUT
1HDL CONT
SECAM CONT
B-Y/Cb OUTPUT
R-Y/Cr OUTPUT
4.43MHz
X’tal
2
M-X’tal
3
3.58MHz
X’tal
4
APC
5
C GND
6
CHROMA
OUTPUT
7
V-SEP
8
SYNC.
INPUT
9
SYNC.
OUTPUT
10
AFC
FILTER
11
SYNC.
GND
12
32fh VCO
13
VD
OUTPUT
14
HD
OUTPUT
38
DAC2
37
Y OUTPUT
36
GND
35
DAC TEST
34
SDA
33
SCL
32
Ys (TH=0.7V HI; 1IN/LOW; 2IN)
31
R-Y1 INPUT
30
B-Y1 INPUT
29
Y1 INPUT
28
I
2
C
GND
27
R-Y2 INPUT
26
B-Y2 INPUT
25
Y2 INPUT
24
23
22
21
20
19
18
17
16
15
SW GND
ADRS SW
R-Y/R
OUTPUT
B-Y/B
OUTPUT
Y/G
OUTPUT
SW
Vcc (9V)
SYNC
Vcc (9V)
CP/HP
INPUT
Dig GND
SCP
OUTPUT
DAC2
DAC1
fsc
Y DL
Y DL
SW
SW
PEDESTAL
CLAMP
1H DL
CONTROL
SECAM
CONTROL
CbCr / UV
SW
fsc
TRAP
OFFSET
SW
LPF / fsc
TRAP
BPF H. AFC H C / D
32fH
VCO
V C / D
ACC
TOF SCP
SW
APC
P / N ID
SYSTEM CW
MATRIX TINT
DEMO
CHROMA
BLK
NOSE
DET
YUV RGB
MATRIX
CP / HP
IN
SW
V SEP
SYNC
SEP
SUB-COLOR
VCXO
SUB-
CONTRAST
Y OFFSET
SW
DAC
TEST Ys
I
2
C BUS
CONTROL
PEDESTAL
CLAMP
PEDESTAL
CLAMP
HI: 20h/LOW: 24h
1
2345678 9 10 11 12 13 14 15 16 17 18 19
20
21
22
23
24
25
26
27
28
29
3031
32
33
34
35
36
37
3839
40
41
42
VDD
VSS
S1 S2 S3 S4 S5 S6 S7 S8 S9
S10 S11 S12 S13 S14 S15 S16 S17 S18
GND
CK
DATA
STB
S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17 S18
18 bit Latch Circuit (Rch)
(Lch) Same as Rch
Level Shift + Shift Register Circuit
TC9274N-011 (IC701)BU2090F (IC302, 1003, 1005)
1
2
3
4
5
6
7
8
18
17
16
15
14
13
12
11Q3
VDD
OE
Q7
Q8
Q11
Q10
Q9
Q6
VSS
DATA
CLOCK
LCK
Q0
Q1
Q2
910
Q4 Q5
CONTROL CIRCUIT
12-bit SHIFT REGISTER
1 2- bi t S TRAGE REGI ST ER
OUTPUT BUFFER (OPEN DRAIN)
TC9273N-004 (IC705)
S2
S3
S4
S5
S6
S7
S8
S9
S10
S1
V DD
STB
DATA
S2
S3
S4
S5
S6
S7
S8
S9
S10
GND
CK
Vss
S1
13
14
1
3
4
5
6
7
8
9
10
11
12
2
15
16
28
27
26
25
24
23
22
21
20
19
18
17
1
13
28
2~12
12~27
14
15
16
Vss
GND
V
DD
S1~S10
CK
DATA
STB
GND=0V
Vss=-8.0~-17V
GND=0V
Border Input
Pin No Symbol Name Function
Dual Power Use:VDD = 8.0~17 V Single Power Use:VDD = 8.0~18V
+Power Terminal
Digital Ground
+Power Terminal
I/O Terminal
Clock Input Low level
Terminal
Clock input for data transfer.
Serial input for switch setting.
Strobe InputStrobe input for data writing.Strobe Input
Data Input
Input terminal of analog switch.
TC9273N Terminal Function