Denon AVR-1803/883 User manual

Hi-Fi Component
SERVICE MANUAL
MODEL AVR-1803/883
AV SURROUND RECEIVER
X0154 NC 0210
For U.S.A., Canada, Europe,
U.K., Asia, China, Hong Kong,
Taiwan R.O.C. & Korea model
Some illustrations using in this service manual are slightly different from the actual set.
16-11, YUSHIMA 3-CHOME, BUNKYOU-KU, TOKYO 113-0034 JAPAN
Telephone: [phone]

2
AVR-1803/883
SPECIFICATIONS


Audio section
• Power amplifier
Rated output: Front: 80W+80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.)
110W+110W (6 ohms, 1kHz with 0.7% T.H.D.) (U.S.A., Canada, Europe, U.K. Models)
130W+130W (6 ohms, EIAJ *) (Asia Model)
Center: 80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.)
110W (6 ohms, 1kHz with 0.7% T.H.D.)
(U.S.A., Canada, Europe, U.K. Models)
130W (6 ohms, EIAJ *) (Asia Model)
Surround: 80W+80W (8 ohms, 20Hz~20kHz with 0.08% T.H.D.)
110W+110W (6 ohms, 1kHz with 0.7% T.H.D.)
(U.S.A., Canada, Europe, U.K. Models)
130W+130W (6 ohms, EIAJ *) (Asia Model)
Surround Back: 80 W (8 ohms , 20 Hz ~ 20 kHz with 0.08% T.H.D.)
110 W (6 ohms , 1 kHz with 0.7% T.H.D.)
130W (6 ohms, EIAJ *) (Asia Model)
Dynamic power: 100 W x 2 ch (8 ohms)
145 W x 2 ch (4 ohms)
170 W x 2 ch (2 ohms)
Output terminals: Front, Center, Surround: 6 ~ 16 ohms
Surround Back: A or B 6 ~ 16 ohms
A + B 12 ~ 16 ohms
Input sensitivity / input impedance: 200 mV / 47 kohms
Frequency response: 10 Hz ~ 100 kHz: +1, -3 dB (DIRECT mode)
S/N: 100 dB (IHF-A weighted) (DIRECT mode)
• Phone equalizer (PHONE input 

REC OUT)
Input sensitivity: 2.5 mV
RIAA deviation: ±1 dB (20 Hz to 20 kHz)
Signal to noise ratio: 74 dB (A weighting, with 5 mV input)
Rated output / Maximum output: 150 mV / 7 V
Distortion factor: 0.03% (1 kHz, 3 V)


Video section
• Standard video jacks
Input / output level and impedance: 1 Vp-p, 75 ohms
Frequency response: 5 Hz ~ 10 MHz +1, -3 dB
• S -video jacks
Input / output level and impedance: Y (brightness) signal 1 Vp-p, 75 ohms
C (color) signal 0.286 Vp-p, 75 ohms
Frequency response: 5 Hz ~ 10 MHz +1, -3 dB
• Color component video jacks
Input / output level and impedance: Y (brightness) signal 1 Vp-p, 75 ohms
PB/CB(blue) signal 0.7 Vp-p, 75 ohms
PR/CR(red) signal 0.7Vp-p, 75 ohms
Frequency response: 5 Hz ~ 27 MHz +1, -3 dB
* EIAJ: It is the standard which JEITA (Japan Electronics & Information Technology Industries Association) enacted.
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.

3
AVR-1803/883


Tuner section
Receiving Range: [FM] (note: µV at 75 ohms, 0 dBf=1 x 10-15 W) [AM]
U.S.A. & Canada Models: 87.50 MHz ~ 107.90 MHz 520 kHz ~ 1710 kHz
Europe & U.K. Models: 87.50 MHz ~ 108.00 MHz 522 kHz ~ 1611 kHz
Asia Model: 87.50 MHz ~ 107.90 MHz (0.2 MHz steps) 520 kHz ~ 1710 kHz (10 kHz steps)
87.50 MHz ~ 108.00 MHz (0.05 MHz steps) 522 kHz ~ 1611 kHz (9 kHz steps)
Usable Sensitivity: 1.0 µV (11.2 dBf) 18 µV
50 dB Quieting Sensitivity: MONO 1.6 µV (15.3 dBf)
STEREO 23 µV (38.5 dBf)
S/N (IHF-A): MONO 80 dB (IHF-A weighted)
STEREO 75 dB (IHF-A weighted)
Total Harmonic Distortion (at 1 kHz): MONO 0.15% (1kHz)
STEREO 0.3% (1kHz)


General
Power supply: AC 120 V, 60 Hz (U.S.A. & Canada Models)
AC 230 V, 50 Hz (Europe & U.K. Models)
AC 115/230 V, 50/60 Hz (Asia Model)
Power consumption: 4.5 A (U.S.A. & Canada Models)
260 W (Europe, U.K. & Asia Models)
1 W Max. (Standby)
Maximum external dimensions: 434 (W) x 171 (H) x 417 (D) mm (17-3/32" x 6-47/64" x 16-27/64")
Mass: 11.7 kg (25 lbs 6 oz)


Remote control unit RC-916 (U.S.A. & Canada Models)
RC-917 (Europe, U.K. & Asia Models)
Batteries: R6P/AA Type (tow batteries)
External dimensions: 55 (W) x 225 (H) x 34.5 (D) mm (2-11/64" x 8-55/64" x 1-9/64")
Mass: 165 g (Approx. 5.8 oz) (including batteries)
* For purposes of improvement, specifications and design are subject to change without notice.

4
AVR-1803/883
DISASSEMBLY
(Follow the procedure below in the reverse order when reassembling)
1. Top Cover
Remove 6 screws 1and 3 screws 2, then detach the
Top Cover to the arrow direction.
1
2. Front Panel
(1) Remove 4 screws 3and 3 screws 4.
(2) Disconnect 4 connectors coming from the Front
Panel side.
(3) Disconnect the connector coming from the Trans.,
and detach the Front Panel to the arrow direction.
1
2
Top Cover
3
4
Connector
Connector
Front Panel
Rear Panel
6
6
5
3. Rear Panel
(1) Take off the AC cord 5.
(2) Remove screws 6.
(44 pieces for U.S.A & Canada models)
(41 pieces for Europe model)
(43 pieces for Asia model)
(3) Detach the Rear Panel to the arrow direction.
4
4
6

LEVEL DIAGRAMS
8
76
5
4
3
2
1
A
B
C
D
E
AVR-1803/883
5
FRONT/CENTER/SURROUND

8
76
5
4
3
2
1
A
B
C
D
E
AVR-1803/883
6
SUB WOOFER

BLOCK DIAGRAM
8
76
5
4
3
2
1
A
B
C
D
E
AVR-1803/883
7

8
AVR-1803/883
ADJUSTMENT
Tuner Section
CONNECTION DIAGRAM OF MEASURING INSTRUMENTS


FM
STEREO
MODULATOR
FM SSG
Digital
Voltmeter
75ohm
T402 T403
IC402
VR402
TUNER B'D
R471
20 +14
−10 dB


AM
T402 T403
IC402
TUNER B’D
R471
VR401
FM ALIGNMENT
Input Output Adjustment
Step Alignment
Item
Tuning
Frequency
Setting Type Frequency Input
Level Modulation Coupling Type Connect to Points Adjust to
1Center
Adjustment
98.1MHz
(98.0MHz) FM SSG 98.1MHz 60dBµMono
1kHz 100%
Antenna
Terminal
Digital
Voltmeter R471 T402 ±50mV
2 Distortion 98.1MHz
(98.0MHz) FM SSG 98.1MHz 60dBµMono
1kHz 100%
Antenna
Terminal
Distortion
Meter
Output
Terminal (L) T403 Minimum
Distortion
3 Repeat Steps 1 and 2
4 Signal Level 98.1MHz
(98.0MHz) FM SSG 98.1MHz 20dBµOFF Antenna
Terminal
Light “TUNED” on
FL Display VR402
AM ALIGNMENT
Output Adjustment
Step Alignment
Item Frequency Input Type Connect to Points Adjust to Remarks
1 Signal Level 999 (1000)
kHz AM SSG 
VR401 Light “TUNED” on
FL Display
SSG OUTPUT
74dBµ(EMF)

9
AVR-1803/883
Audio Section
Idling Current
Required measurement equipment : DC Voltmeter
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.)
Adjustment
(1) Remove top cover and set VR101, VR102, VR103, VR104, VR105 on Amp. Unit, VR106 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 ch: CP106).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting. MASTER VOLUME : "---" counterclockwise ( min.)
MODE : 6CH 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.
VR104
TR104
VR105
TP105
VR106
CP106
S Back ch
S Rch
VR102
TP102
VR103,TP103
C ch
VR101,TP101
F Lch
S Lch
F Rch
DC Voltmeter

10
AVR-1803/883
SEMICONDUCTORS


IC’s
CXP740096
(IC201)
PH7 PH6 PH5 PH4 PH3 PH2 PH1 PH0
PK7/TO1
RST
VSS
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 VDD
VSS
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
AVDD
AVREF
AVSS
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
1 9274 STB O TC9274 CONTROL
2 9274 73 9164 CLK O TC9274/TC9273/TC9164 CONTROL
3 9274 73 9164 DAT O TC9274/TC9273/TC9164 CONTROL
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 89057 AUDIO I LC89057 CONTROL
9 89057 EMPHA I LC89057 CONTROL
10 SW SUM O SW SUMMING CONTROL
11 M32 SDIN I DATA INPUT FROM MELODY32
12 89057 SDIN I DATA INPUT FROM LC89057
13 EPROM RESET O EPROM RESET
14 89057 RESET O LC89057 RESET
15 M32 CS O MELODY32 CS
16 M32 SDOUT O MELODY32 CONTROL DATA
17 89057 CE O LC89057 CE
18 89057 1837 SDOUT O CONTROL DATA
19 89057 1837 SCLK O CONTROL CLOCK
20 1837 RESET O CODEC RESET
21 9164 CE O TC9164 CONTROL
22 SW MUTE O SW MUTE
23 RELAY SPK B O SURROUND BACK RELAY
Pin
No. Pin Name FunctionI/O

11
AVR-1803/883
Pin
No. Pin Name FunctionI/O
24 RELAY SPK A O FRONT RELAY
25 RELAY SURR O SURROUND RELAY
26 RELAY CNT O CENTER RELAY
27 RELAY H/P O H/P RELAY
28 FUNC UP I ENCODER INPUT(FUNCTION)
29 H/P DETECT I H/P DETECT
30 FUNC DOWN I ENCODER INPUT(FUNCTION)
31 NC 
32 CNT MUTE O CENTER MUTE
33 FRONT MUTE O FRONT MUTE
34 SURR MUTE O SURROUND MUTE
35 NC 
36 NC 
37 NC 
38 FL DRV RESET O LC75721NE RESET
39 RELAY POWER O POWER RELAY
40 RESET I RESET
41 GND I
42 XTAL 
43 EXTAL 
44 FL DRV CE O LC75721NE CE
45 FL DRV DATA O LC75721NE DATA
46 FL DRV/2090 CLK O CONTROL CLOCK
47 2090 DATA O BU2090F DATA
48 VOL DOWN I ENCODER INPUT(VOLUME)
49 VOL UP I ENCODER INPUT(VOLUME)
50 SEL DOWN I ENCODER INPUT(SELECT)
51 SEL UP I ENCODER INPUT(SELECT)
52 AVSS 
53 VREF 
54 AVDD 
55 NC 
56 GND 
57 STEP OPT I AREA SELECT
58 SET OPT I MODEL SELECT
59 GND 
60 KEY IN3 I KEY INPUT
61 KEY IN2 I KEY INPUT
62 KEY IN1 I KEY INPUT
63 9K/10K STEP I TUNER STEP SELECT
64 PROTECT I PROTECTION
65 89057 INT I LC89057 INTERUPT
66 M32 SCLK O MELODY32 CLOCK
67 1837 CE O CODEC CE
68 M32 RESET O MELODY32 RESET
69 NC 
70 STBY LED O STANDBY LED
71 NC 
72 NC 
73 NC 
74 NC 
75 SURR BACK MUTE O SURROUND BACK MUTE
76 KIC9459 CE O KIC9459 CONTROL

12
AVR-1803/883
Pin
No. Pin Name FunctionI/O
77 PWR DOWN I POWER DOWN DETECT
78 RDS CLK O TDA7330 CONTROL CLOCK
79 RDS DATA O TDA7330 CONTROL DATA
80 NC 
81 9184 CE O TC9184 CONTROL
82 M32 INTREQ I/O MELODY32 CONTROL
83 MULTI MUTE O MULTI MUTE
84 MULTI SB RLY O MULTI/SURROUND BACK :SELECTION RELAY
85 REMOCON I REMOTE CONTROL SIGNAL INPUT
86 GND 
87 GND 
88 VSS 
89 VDD VDD BACK UP
90 NC 
91 TC9482 CE O TC9482 CONTROL
92 PLL DATA O PLL CONTROL
93 PLL CLK O PLL CONTROL
94 PLL DT IN O PLL CONTROL
95 TU MUTE O TUNER MUTE
96 STEREO I STEREO DETECT
97 TUNED I TUNED DETECT
98 PLL CE O PLL CONTROL
99 2090 CLK VIDEO O BU2090 CONTROL(VIDEO)
100 2090 DATA VIDEO O BU2090 CONTROL(VIDEO)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
A15
A14
A13
A12
A11
CE
I/O0
I/O1
I/O2
I/O3
Vcc
GND
I/O4
I/O5
I/O6
I/O7
WE
A10
A9
A8
A7
NC
A0
A1
A2
OE
UB
LB
I/O15
I/O14
I/O13
I/O12
GND
Vcc
I/O11
I/O10
I/O9
I/O8
NC
A3
A4
A5
A6
NC
A0-A15
CE
OE
WE
64K x 16
MEMORY ARRAY
DECODER
COLUMN I/O
CONTROL
CIRCUIT
GND
VCC
I/O
DATA
CIRCUIT
I/O0-I/O7
Lower Byte
I/O8-I/O15
Upper Byte
UB
LB
CE
OE
WE
LB
UB
PIN DESCRIPTION
Pin Name
Address inputs
Symbol
A0-A15
Data Inputs/Outputs
I/O0-I/O15
Chip Enable Input
Output Enable Input
Write Enable Input
Lower-byte Control (I/O0-I/O7)
Upper-byte Control (I/O8-I/O15)
No ConnectionNC
Power
V CC
GroundGND
IS61LV6416 (IC806)
PIN DESCRIPTION
Pin Name
Address Inputs
Symbol
A0-A18
Data Input/Outputs, Command Inputs
DQ0-DQ7
Data Input/Outputs
DQ8-DQ14
Data Input/Output or Address Input
DQ15A-1
Chip Enable
Output Enable
Write Enable
Reset/Block Temporary Unprotect
Ready/Busy OutputRB
Byte/Word OrganizationBYTE
Supply VoltageV CC
GroundV SS
No Connected InternallyNC
Don’t Use as Internally ConnectedDU
E
G
W
RP
A1 A0
A2 E
A3 V SS
A4 G
A5 DQ0
A6 DQ8
A7 DQ1
A17 DQ9
A18 DQ2
RB DQ10
NC DQ3
NC DQ11
RP V CC
W DQ4
NC DQ12
NC DQ5
A8 DQ13
A9 DQ6
A10 DQ14
A11 DQ7
A12 DQ15A-1
A13 V SS
A14 BYTE
A15 A16
24
13
12
1
25
36
37
48
M29W800T
M29W800T
19
A0-A18
W
DQ0-DQ14
M29W800AT
E
15
G
RP
DQ15A-1
BYTE
RB
V
CC
V ss
M29W800AT (IC805)

13
AVR-1803/883
MELODY32 (IC804)
Pin Name
MELODY32 Terminal Function
Pin
No. Pin Name
Pin
No.
Pin Name
Pin
No.
Pin Name
Pin
No.
Pin Name
Pin
No.
Pin Name
Pin
No.
1 D14
2 D15
3 HAD0
4 HAD1
5 GND
6 HAD2
7 HAD3
8 HAD4
9 HAD5
10 HAD6
11 HAD7
12 HAD8
13 VDDEXT
14 HAD9
15 HAD10
16 GND
17 HAD11
18 HAD12
19 VDDINT
20 HAD13
21 HAD14
22 HAD15
23 HA16
24 HACK_P
25 VDDEXT
26 HACK
27 HCMS
28 HCIOMS
29 GND
30 HALE
31 HRD
32 HWR
33 GND
34 PF0
35 PF1
36 PF2
37 PF3
38 PF4
39 PF5
40 VDDEXT
41 PF6
42 PF7
43 TMR0
44 TMR1
45 TMR2
46 DT2
47 TCLK2
48 TFS2
49 DR2
50 RCLK2
51 RFS2
52 RXD
53 TXD
54 GND
55 GND
56 DT0
57 TCLK0
58 VDDINT
59 TF50
60 DR0
61 RCLK0
62 RFS0
63 VDDEXT
64 DT1
65 TCLK1
66 TFS1
67 DR1
68 RCLK1
69 RFS1
70 BMODE0
71 BMODE1
72 BYPASS
73 RESET
74 TDO
75 TDI
76 TMS
77 GND
78 TCK
79 TRST
80 GND
81 EMU
82 VDDINT
83 OPMODE
84 A0
85 A1
86 A2
87 A3
88 A4
89 A5
90 VDDEXT
91 A6
92 A7
93 A8
94 GND
95 A9
96 A10
97 A11
98 A12
99 A13
100 VDDEXT
101 A14
102 A15
103 A16
104 A17
105 GND
106 A18
107 A19
108 A20
109 A21
110 BGH
111 BG
112 BR
113 BMS
114 IOMS
115 MS0
116 MS1
117 MS2
118 VDDEXT
119 MS3
120 ACK
144
1
109
108
72
73
36
37
TOP VIEW
121 WR
122 RD
123 D0
124 D1
125 D2
126 D3
127 VDDINT
128 D4
129 GND
130 CLKOUT
131 VDDEXT
132 CLKIN
133 XTAL
134 GND
135 D5
136 D6
137 D7
138 D8
139 D9
140 D10
141 D11
142 D12
143 VDDEXT
144 D13

14
AVR-1803/883
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

15
AVR-1803/883
LC89057W Terminal Function
Function
Pin
No. Pin Name
LC89057W (IC807)
1 RXOUT O Input bi-phase select data output terminal
2 RX0 I5TTL compatible digital data input terminal
3 RX1 I Coaxial compatible amp built-in digital data input terminal
4 RX2 I5TTL compatible digital data input terminal
5 RX3 I5TTL compatible digital data input terminal
6 DGND — Digital GND
7 DVDD — Digital power
8 RX4 I5TTL compatible digital data input terminal
9 RX5/VI I5TTL compatible digital data/Validity flag input terminal for modulation
10 RX6/UI I5TTL 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 I5Serial 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 RDATA40CL
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
RDATA
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

16
AVR-1803/883
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 I5µcom I/F, write data input terminal
39 CE I5µcom I/F, chip enable input terminal
40 CL I5µcom I/F, clock input terminal
41 XMODE I5System 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
LA1266 (IC402)
10
4
13
8
19
15
17
18
14
21
22
GND
Vcc
5
11
IF
BUFFER
IF
BUFFER
2
FM - IF
6
Q.D.
7
REG
23
OSC OSC
BUFFER
24
NARROW
S-METER S-METER
16
LED
DRIVER
RF MIX
12
20
AM-IF DET
AGC
POST
AMP
9
13
AM-IF FM-IF FM-IN
AM-IN

20 19 18 17 16 15 14 13 12
9
8
7
56
1
21
LA3401 (IC403)
22
VOL
REG OSC
SYMMETRICAL
REOCTANCE
CIRCUIT
PHASE
COMPARATOR
VCO STOP
PILOT DET
FF FF
38kHz
FF
38kHz 90°
FF
19kHz 90°
MUTING
FM AM CHANGE
Ro
Rc
Rc Rb
234
DECODER MUTING CONTROL
FM AM CHANGE OVER
Vcc ON
MUTING
MUTING
OUTPUT
STEREO
SWITCH
TRIGGER
LAMP
DRIVER
Rb
10 11
LC72131 (IC401)
120
219
318
417
516
615
714
813
912
10 11
XIN
CE
DI
CL
DO
BO1
BO2
BO3
BO4
IO1
AOUT
AIN
PD
VDD
FMIN
AMIN
IO2
IFIN
Vss
XOUT
124
12 13
FF

17
AVR-1803/883
BU2090F (IC302, 602)
MM74LCX244 (IC809~811)
TDA7330BD (IC202)
TOP VIEW
POR
MUXIN
TM
VREF
FSELCOMP
T2FILOUT
VCC
GND
ARI
T1
QUAL
T3
RDDA
T4
RDCLOSCOUT
T57
OSCIN
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
20
19
18
16
15
14
13
I3
VCC
OE2
O2
I5
O0
I4
O1
I6
OE
I0
O4
I1
O5
I2
O6
912
O7 O3
10 11
GND I7
TOP VIEW
17
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(OPENDRAIN)
64
49
48 33
32
17
161
AM 1 AM 2 AM 3 AM 4 AM 5 AM 6 AM 7 AM 8 AM 9 AM 10 AM 11 AM 12 AM 13 AM 14 AM 15 AM 16
AM 17
AM 18
AM 19
AM 20
AM 21
AM 22
AM 23
AM 24
AM 25
AM 26
AM 27
AM 28
AM 29
AM 30
AM 31
AM 32
G7 G8 G9 G10 G11 AA8/G12 AA7/G13 AA6/G14 AA5/G15 AA4/G16 AA3 AA2 AA1 AM35 AM34 AM33
DI
CL
CE
RES
VDD
OSCI
OSCO
Vss
TEST
VFL
G1
G2
G3
G4
G5
G6
LC75721E (IC301)
VDD
VSS
VFL
DI
CL
CE
DI: Data
CL: Clock
CE: Chip enable
OSCI
OSCO
RES
AM1~AM35
AA1~AA3
AA4/G16
AA5/G15
AA6/G14
AA7/G13
AA8/G12
G1~G11
TEST
Symbol
LC75721E Terminal Function
Power terminal +5V
Power terminal GND
Power terminal FL drive
Serial data transfer terminal
External CR connecting terminal
System reset terminal
Anode output terminal
Anode/Grid output terminal
Grid output terminal
LSI test terminal
Function

MM74LCX02 (IC813)
1Y
1A
1B
2Y
2A
2B
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
4Y
4B
4A
3Y
3B
3A
1A
1B
1Y
2A
2B
2Y
1
2
3
4
5
6
7
14
13
12
11
10
9
8
Vcc
4B
4A
4Y
3B
3A
3Y
GND
1
2
3
4
5
6
7
14
13
12
11
10
9
8
1A
1Y
2A
2Y
3A
3Y
GND
Vcc
6A
6Y
5A
5Y
4A
4Y
SN74LV00APW (IC814) 74HCU04 (IC803)
NJM2068MD
BA4510F
A OUTPUT
A –INPUT
A+INPUT
V
B OUTPUT
V
B –INPUT
B +INPUT
1
2
3
45
7
8
6
Pin Descriptions
Description
Pin Names
D1, D2
CP1, CP2
CD1, CD2
SD1, SD2
Q1, Q1, Q2, Q2
Data Inputs
Clock Pulse Inputs
Direct Set Inputs

Direct Clear Inputs
Outputs
KIA78R05PI (IC663)
4
3
2
1
Vin Vo
Vadj
GND
SpecificIC
12
3
4
GND Q2
Q1Q2
Q1SD2
SD1 CP2
CP1D2
D1CD2
8
9
10
11
12
13
14
7
6
5
4
3
2
1
CD1 VCC
D2
CD2 SD2
CP2
Q2Q2
74LCX74 (IC821)
CP1
SD1 CD1
D1
Q1Q1

18
AVR-1803/883
Vcc
GND
Vout
IC PROTECTOR
ICP-N15 (IC105)GP1FA502RZ (IC801~803)
ABLC GND
VCC
NJL64H380A(RMC301)
KIA7806AP (IC602)
KIA7805AP (IC104, 103, 822)
KIA7815AP (IC101)
KIA7812AP (IC271)
KIA7915PI (IC102)
POSISTOR
P43T7D330BW16
MM74HCT244 (IC812)
VOUT
22kohm
B.P.F
PD
201
192
183
174
165
156
147
138
129
1110
1G
2G
1A0
2A0
2A3
2Y01Y0
1Y3
1A1
2Y1
1A2
2Y2
1Y1
2A1
1Y2
2A2
1A3
2Y3
GND
VCC
FRONT
VIEW
Input GND
Output
FRONT
VIEW
Input GND
Output
FRONT VIEW
TOP VIEW
Vout
GND
Vcc
VCC
VOUT
GND
Vin
Vcc
GND
GP1FA502TZ(IC817)
INPUT
FRONT VIEW
OPTICAL
OUTPUT
IR SENSOR
Head Amp Amp Limitter Comparator
VCC
Vin
GND
DRIVE
IC
LED
Detector
RC1117S25T (IC824)
RC1117S33ST (IC823)
1
2
3
2
ADJ/GND
OUT
IN
VOUT
FRONT VIEW
BA7625 (IC605D)
BA7626 (IC652, 653, 601, 603
603D, 604D, 651, 654)
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
Monitor OUT
GND
IN5
GND
IN4
CTL E
IN3
CTL D
IN1
CTL A
V OUT1
Vcc
IN2
CTL B
V OUT2
CTL C
6dB
6dB
LOGIC
LOGIC
Note 1: * mark means that
feasible for either H or L.
Note 2: Each input terminal is
provided with sink chip
clamp (BA7625).
Each input terminal takes
20kohm at the end (BA7626).
CDE VOUT2
LL* IN1
HL * 
LH* IN3
HHL IN4
HHH IN5
CDE VOUT1
LL* 
HL * IN2
LH* IN3
HHL IN4
HHH IN5
ABE
MONITOR OUT
LL* IN1
HL * IN2
LH* IN3
HHL IN4
HHH IN5
TC9184AP (IC552)
2
3
4
5
6
116 78 910
15
14
13
12
11
BASS+
BASS-
COM
TREBLE-
TREBLE+
Vss VDD GND CK DATA STB
BASS+
BASS-
COM
TREBLE-
TREBLE+
Ladder resister
Analog switch
13 bit latch circuit
Level shift
20 bit Shift register circuit
Analog switch
Ladder resister
Ladder resister
Analog switch
13 bit latch circuit
Code
detect
circuit
Analog switch
Ladder resister

19
AVR-1803/883
2SC1740S
2SC3199Y
KSA916Y
KSA992F
KSC1845F
KTA1266Y
KTA1268BL
KTC2874B
KTC3198Y
KTC3200BL
2SC2412K
KTC3880S
DTA114EK
DTA114YK
DTA144EK
DTC114EK
DTC114YK
DTC144EK
TOP
VIEW
E
B
C
TOP
VIEW
E
B
C
FRONT
VIEW
B
C
E
TOP VIEW
KDS160MTZJ3.3B
MTZJ5.1B
MTZJ6.8B
MTZJ7.5A
MTZJ8.2B
MTZJ11B
MTZJ18B
MTZJ20B
1N4007
1SS133
B
C
E
R1
R2
B
C
E
R1
R2
2SK117
FRONT
VIEW
S
G
D
DTA114ES
DTC114TS
DTC114YS
DTC144ES
FRONT
VIEW
B
C
E
DTA Series DTC Series
DTA114EK
DTA114YK
R1
10kohm /Ω
R2
10kohm /Ω
DTA144EK 47kohm /Ω47kohm /Ω
10kohm /Ω47kohm /Ω
DTA114ES 10kohm /Ω10kohm /Ω
DTC114EK
DTC114YK
10kohm /Ω10kohm /Ω
DTC144EK
R1 R2
47kohm /Ω47kohm /Ω
10kohm /Ω47kohm /Ω
DTC144ES 47kohm /Ω47kohm /Ω
DTC114YS 10kohm /Ω47kohm /Ω
DTC114TS 10kohm /Ω
HL-50RDRF4T
TRANSISTORS
DIODES (LED included)
TOP VIEW
KBPC604
TOP VIEW
2SD947F 2SD3290Y
2SB1560Y
E (Emitter)
C (Collector)
B (Base)
E (Emitter)
C (Collector)
B (Base)

20
AVR-1803/883
16-st-42GNK (FL301)
S38
S14
S9 S1
S2
S3
S4
S5
S12
S13
S7
S15
S6
S10
S11
G1
G1
G2
G3
G4
G5
G6
G7
G16 G15 G13 G12 G10 G9
F2F1
158
G14 G11 G8
G2~G16
1234567 8 9 10111213141516171819
23 24 25 26 27 28 29 30 31 32 33 34
F1 F1 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 S17
20
21 22 35 36 37 38 39 40
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57
S18
S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 S33 S34 S35 S36 S37 S38
G16 G15 G14 G13 G12 G11 G10 G9 G8 G7 G6 G5 G4 G3 G2 G1 F2 F2
58
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
G1 G2 G3 G4 G5 G6 G7 G8 G9 G10 G11 G12 G13 G14 G15 G16
S38
S36
S37
S38
−2
DBS
TV
−1
VDP
TAPE
//(DVD)
/(MD)
AUX
DVD
MD V.AUX
TUNER
−2
−3
CD
−
1
PHONO
VCR
REC
MULTI
STEREO
AUTO
TUNED
RDS
CH
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S1
S2
S3
S4
S5
S6
S7
S9
S10
S11
S12
S1
S2
S3
S4
S5
S6
S7
S8
S9
S10
S11
S12
S13
S14
S15
S16
S17
S18
S19
S20
S21
S22
S23
S24
S13
S14
S15
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
S25
S26
S27
S28
S29
S30
S31
S32
S33
S34
S35
G2~G16
G1
G2~G16
G1
G2~G16
G1
G2~G16
G1
DIGITAL
PRO LOGIC
S1
S6
S11
S16
S21
S26
S31
S2
S7
S12
S17
S22
S27
S32
S3
S8
S13
S18
S23
S28
S33
S4
S9
S14
S19
S24
S29
S34
S5
S10
S15
S20
S25
S30
S35
TUNED
RDS
STEREO
AUTO
REC
MULTI
PHONO
VCR
CD
−
1
TUNER
−2−3 V.AUX
AUX
MD
DVD /
/TAPE
VDP TV
−
1−2
/DBS
PRO LOGIC
DIGITAL
DIGITAL
ANALOG
TUNED
RDS
STEREO
AUTO
REC
MULTI
PHONO
VCR
CD
−1
TUNER
−2−3V.AUX
AUX
MD
DVD /
/TAPE
VDP TV
−1−2
/ DBS
CH
CH
PRO LOGIC
DIGITAL
DIGITAL
ANALOG
FL DISPLAY
Pin Assignment
F1, F2 : Filament
G1~G16: Grid
S1~S38 : Anode
PIN NO.
CONNECTION
PIN NO.
CONNECTION
PIN NO.
CONNECTION
Anode & Grid Assignment