Aiwa AV-S17 User manual

SERVICE MANUAL
DATA
 This Service manual contains the additional information Electrical adjustment, IC BLOCK
IAGRAM, FL GRI and ANO E and IC ESCRIPTION. If requiring the other
information, see Service Manual of AV-S17 (U), (S/M Code No. 09-007-435-0N1).
AV-S17 U
STEREO AV RECEIVER
S/M Code No. 09-00A-435-0S1
SUPPLEMENT

ELECTRICAL MAIN PARTS LIST
(Tuner additional parts)
 2 
DESCRIPTIONREF. NO. KANRI
NO.
PART NO. DESCRIPTIONREF. NO. KANRI
NO.
PART NO.
IC
87-A20-913-010 IC,LA1837NL
87-070-127-110 IC,LC72131D
TRANSISTOR
87-A30-196-080 TR,2SC4115SRS
89-327-143-080 TR,2SC2714O
DIODE
87-A40-269-080 C-DIODE,MC2836
TRANSISTOR ILLUSTRATION
E C B
E
B
C
2SC4115 2SC2714
IC BLOC DIAGRAM

 3 

 4 
IC DESCRIPTION
IC, UPD780226-016-3BA
1 O-K-SCAN O Switch scan timing output.
2 O-PLL-CE O PLL IC chip enable output.
O-DATA(M) O Data output for sound.
4 I-TUNE/IFC I TUNE-IF count serial data input.
5 O-STB(M) O Latch strobe output for sound control.
6 O-MUTE O System mute ON/OFF output.
7 O-CLK(M) O Clock output.
8 NC  Not connected.
9 O-POWER O System power supply ON/OFF output.
10,11 NC  Not connected.
12 I-TM-BASE I Reference clock input for timer watch.
1 NC  Not used.
14 TAPE-MONITOR O LED output for tape monitor.
15 PWR-LED O LED output for standby.
16 NC(5.1CH) O Not used.
17 IC  Connected to ground.
18 VSS  Connected to ground.
19 VDD(+5.5V)  Power supply input (+5.5V).
20 NC  Not connected.
21 TUNER O LED output for TUNER.
22 PHONO O LED output for PHONO.
2 AUX O LED output for AUX.
24 CD O LED output for CD.
25 VIDEO1 O LED output for VIDEO1.
26 VIDEO2 O LED output for VIDEO2.
27 VIDEO O LED output for VIDEO .
28,29 NC  Not used.
0 RESET I Reset input.
1 ~ NC  Not connected.
4 I-RMC I Remote control signal input.
5 NC  Not connected.
6 C-SHIFT O Microprocessor clock shift output.
7 VDD1  Power supply.
8 X2 O Main clock output (4.19MHz).
9 X1 I Main clock input (4.19MHz).
40 VSS1  Ground.
41 AVDD  AC connector power supply.
42 HOLD I System power supply voltage monitoring AD input.
4 I-RE-VOL I Rotary encoder (vol) AD input.
44 NC  Not used.
45 I-JOG2 I Rotary encoder (multy jog) AD input.
Pin No. Pin Name I/O Descrip ion

 5 
Pin No. Pin Name I/O Descrip ion
46 I-FU-JOG1 I Rotary encoder (function) AD input.
47 I-KEY2 I Key2 AD input.
48 I-KEY1 I Key1 AD input.
49 I-MULTI-LEVEL I Not used.
50 AVSS  Ground.
51 NC  Not connected.
52 ~ 58 P 5 ~ P29 O FL segment P 5 ~ P29 output.
59 GEQ O/I FL segment P28 output / GEQ data input to diode (Not used).
60 LW O/I FL segment P27 output / LW mode data input to diode (Not used).
61 FM1 O/I FL segment P26 output / FM1 mode data input to diode (Not used).
62 RDS O/I FL segment P25 output / RDS data input to diode (Not used).
6 BBE O/I FL segment P24 output / BBE data input to diode (Not used).
64 AMST/WIDE O/I FL segment P2 output / AM stereo, wide band data input to diode (Not used).
65 AM10K O/I FL segment P22 output / AM10kHz step data input to diode (Not used).
66 KARAOKE O/I FL segment P21 output / KEY CON data input to diode (Not used).
67 OSD O/I FL segment P20 output / OSD data input to diode (Not used).
68 AC- O/I FL segment P19 output / DOLBY DIGITAL data input to diode (Not used).
69 DIGITAL-IN O/I FL segment P18 output / Digital input data input to diode (VIDEO1/2/ , Not used).
70 96KHZ O/I FL segment P17 output / 96kHz data input to diode (Not used).
71 DTS O/I FL segment P16 output / DTS data input to diode (Not used).
72 DSP O/I FL segment P15 output / DSP data input to diode (Not used).
7 P14 O FL segment P14 output.
74 STEREO O/I FL segment P1 output / Tuner stereo detected input.
75 HP-MUTE O/I FL segment P12 output / Headphone mute detected (Not used).
76 I-MIC O/I FL segment P11 output / Mic input detected input (Not used).
77 P10 O FL segment P10 output.
78 P9 O FL segment P9 output.
79 VDD2  Power supply input.
80 -VFL  Power supply for FL display.
81 ~ 88 P8 ~ P1 O FL segment P8 ~ P1 output.
89 ~ 91 NC  Not connected.
92 ~ 100 G9 ~ G1 O FL grid output G9 ~ G1 output.

 6 
FL (9-BT-172GNK) GRID ASSIGNMENT AND ANODE CONNECTION
GRID ASSIGNMENT

 7 
ANODE CONNECTION

 8 
5. FM Tracking Check
Settings :  Test point : TP9(Lch), TP9(Rch)
Method :  Set to FM 9 .0MHz and check that the test point is
less than 9.0dB.
6. AM IF Adjustment
Settings :  Test point : TP (Lch), TP9(Rch)
 Adjustment location :
L772 ................................................ 450kHz
7. DC Balance / Mono Distortion Adjustment
Settings :  Test point : TP3, TP4 (DC Balance)
TP (Lch), TP9(Rch) (Distortion)
 Adjustment location : L771
 Input level : 60dBµV
Method : Set to FM 9 .0MHz and adjust L771 so that the
voltage between TP3 and TP4 becomes 0V ± 0.04V.
Next, check that the distortion is less than 1.3%.
1. Clock Check
Settings :  Test point : TP2(CLK)
Method : Set to AM 1710kHz and check that the test point is
2160kHz ± 45Hz.
2. AM VT Check
Settings :  Test point : TP1(VT),
Method : Set to AM 1710kHz, AM 530kHz and check
that the test point is less than .5V(1710kHz) and
more than 0.6V(530kHz).
3. AM Tracking Adjustment
Settings :  Test point : TP (Lch), TP9(Rch)
 Adjustment location :
L9 1(1/3) ...................................... 1000kHz
Method : Set to MW 1000kHz and adjust L9 1(1/3) so that the
test point is max.
4. FM VT Check
Settings :  Test point : TP1(VT)
Method : Set to FM 10 .0MHz and check that the test point is
less than .0V.
Then set to FM 7.5MHz and check that the test point
is more than 0.5V.
ADJUSTMENT <TUNER>

2–11, IKENOHATA 1–CHOME, TAITO-KU, TOKYO 110, JAPAN TEL:[phone]
Printed in Singapore912204