S E R V I C E
M A N U A L
MODEL : PC-X270 ( C )
AM/FM RADIO CASS CD PORTABLE SYSTEM
MATESTAR ELECTRONICS LTD.
PERFORMANCE SPECIFICATIONS
Date |
: 7 May , 2003 |
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Model |
: PC-X270 |
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Band |
: AM / FM (PLL RADIO) |
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CD CASSETTE System |
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Page |
Total 6 Pages |
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GENERAL TEST CONDITION
Output Load |
3 ohm non-reactive |
Reference Output |
: 250 mW |
Input Signal Source |
: IRE LOOP for AM |
|
75 ohm dummy for FM |
Modulation |
: 30% 400 Hz for AM |
|
22.5 KHz Deviation 1 KHz for FM |
|
75KHz Modulation for FM MPX |
Remarks |
DC : 12V |
|
AC : 120V 60Hz |
* * * Subject to change without notice .
Prepared by |
Approved by |
page 1
PERFORMANCE SPECIFICATIONS
MODEL NO : PC-X270
Amplitude Modulation |
( AM ) Section |
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Test Item |
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|
Unit |
Nominal |
Limit |
#1 |
#2 |
|
A.01 |
Tuning Range |
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LOW |
KHz |
520 |
+/-5 |
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HIGH |
KHz |
1710 |
+/-5 |
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A.02 |
I.F. Frquency |
|
600KHz |
KHz |
450 |
+/-5 |
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A.03 |
Sensitivity (AM Loop ANT.) |
(LOW TP) |
600KHz |
dB/m |
58 |
68 |
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S/N 20dB |
(MID TP) |
1000KHz |
dB/m |
58 |
66 |
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(HIGH TP) |
1400KHz |
dB/m |
58 |
66 |
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A.04 |
Image Rejection |
|
1000KHz |
dB |
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1400KHz |
dB |
37 |
30 |
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A.05 |
S/N Ratio at 100dB/m Input |
|
600KHz |
dB |
35 |
30 |
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1000KHz |
dB |
35 |
30 |
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1400KHz |
dB |
35 |
30 |
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A.06 |
I.F. Rejection |
|
(MW)600KHz |
dB |
48 |
40 |
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A.07 |
AM Whistle Modulation |
|
910/1350KHz |
% |
-- |
15 |
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A.08 |
Selectivity (+/-10KHz) (ACA) |
|
600KHz |
dB |
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1000KHz |
dB |
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A.09 |
AGC Figure of Merit (126dB) |
1000KHz |
dB |
40 |
35 |
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A.10 |
Audio Response -6dB (AM:1000KHz) |
LOW |
Hz |
70 |
125 |
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HIGH |
KHz |
2K5 |
2K |
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A.11 |
Distortion |
30% at Ref. |
|
1000KHz |
% |
1 |
3 |
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60% at Ref. |
|
1000KHz |
% |
5 |
10 |
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A.12 |
Modulation Hum (AC) |
|
1000KHz |
dB |
50 |
40 |
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A.13 |
Overload (M=80% THD=10%) |
1000KHz |
mV/m |
|
>100 |
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A.14 |
Min. Volume Hum and Noise |
|
mV |
0.7 |
1.2 |
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A.15 |
10% THD Power(Mod:80%)(1-CH Load Only)( AC ) |
|
W |
|
5 |
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A.16 |
Max. Vol. Audio Power Output (80% Mod) |
1000KHz |
W |
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A.17 |
6dB Bandwidth at 20dB S/N |
|
1000KHz |
KHz |
4 |
+/-3 |
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A.18 |
Auto Search Threshold |
|
600KHz |
dB/m |
60 |
68 |
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|
1000KHz |
dB/m |
60 |
66 |
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1400KHz |
dB/m |
60 |
66 |
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A.19 |
OSC Dropout Voltage Max. Power (DC) |
1000KHz |
V |
8.4 |
10.8 |
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Fial Out Valtage |
(AC) |
1000KHz |
% |
|
70 |
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page 2
PERFORMANCE SPECIFICATIONS
MODEL NO : PC-X270
Frequency Modulation ( FM ) Sectionn
|
Test Item |
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|
Unit |
Nominal |
Limit |
#1 |
#2 |
F.01 |
Tuning Range |
|
LOW |
MHz |
87.9 |
+/-0.1 |
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High |
MHz |
107.9 |
+/-0.1 |
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F.02 |
Frequency Step |
|
200/100Hz |
KHz |
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F.03 |
I.F Frequency |
|
90.1MHz |
MHz |
10.7 |
+/-0.09 |
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F.04 |
Sensitivity at -30dB S/N (MONO) |
|
90.1MHz |
dB/uM |
20 |
28 |
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98.1MHz |
dB/uM |
20 |
28 |
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106.1MHz |
dB/uM |
20 |
28 |
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F.05 |
3 dB Limit Sens |
|
98.1MHz |
dB |
15 |
25 |
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F.06 |
Stereo Threshold (Dev 75KHz) |
|
98.1MHz |
dB |
15 |
25 |
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F.07 |
Overload |
|
98.1MHz |
dB |
|
110 |
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F.08 |
Image Rejection |
|
90.1MHz |
dB |
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106.1MHz |
dB |
25 |
18 |
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F.09 |
I.F. Rejection |
|
90.1MHz |
dB |
50 |
40 |
|
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F.10 |
AM Suppression |
|
98.1MHz |
dB |
30 |
24 |
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F.11 |
Spurious Suppression |
|
98.1MHz |
dB |
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F.12 |
Selectivity at 98.1MHz +/-400KHz |
|
98.1MHz |
dB |
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F.13 |
Audio Response -6dB |
|
98.1MHz |
Hz/KHz |
60/4K5 |
100/4K |
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F.14 |
Channel Separation (1KHz) |
|
98.1MHz |
dB |
30 |
20 |
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F.15 |
Total Harmonic Distortion (60dB) |
Mono Ref |
22.5KHz |
% |
1 |
3 |
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Max Pow |
75KHz |
% |
10 |
30 |
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F.16 |
Signal to Noise Ratio (Input 60dB) |
|
90.1MHz |
dB |
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98.1MHz |
dB |
45 |
40 |
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106.1MHz |
dB |
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STEREO S/N(INPUT 60dB) W/F B.P.F |
98.1MHz |
dB |
40 |
30 |
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F.17 |
Auto Search Threshold |
|
98.1MHz |
dB |
25 |
30 |
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|
106.1MHz |
dB |
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F.18 |
Modulation Hum (AC) |
|
98.1MHz |
dB |
45 |
40 |
|
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F.19 |
AFC Holding Range |
|
98.1MHz |
KHz |
|
|
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F.20 |
Min. Volume Hum & Noise |
|
98.1MHz |
mV |
0.7 |
1.2 |
|
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F.21 |
10% THD Power(Dev 75KHz)(1-CH Load Only)( AC ) |
98.1MHz |
W |
|
5 |
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F.22 |
Max Power |
|
98.1MHz |
W |
|
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F.23 |
OSC Dropout Voltage Max. Power (DC) |
98.1MHz |
V |
8.4 |
10.8 |
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(AC) |
98.1MHz |
% |
|
70 |
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page 3
PERFORMANCE SPECIFICATIONS
MODEL NO : PC-X270
AUX SCETION:
|
Test Item |
|
Unit |
Nominal |
Limit |
#1 |
#2 |
C.01 |
THD 10% Power Output (AC) ( 1-CH Load Only) |
1KHz |
W |
|
5 |
|
|
C.02 |
Noise Level (Volume Max.) |
|
mV |
5 |
15 |
|
|
C.03 |
Noise Level (Volume Min.) |
|
mV |
0.7 |
1.2 |
|
|
C.04 |
Distortion |
1KHz |
% |
1 |
4 |
|
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C.05 |
S/N Ratio |
1KHz |
dB |
55 |
45 |
|
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C.06 |
Separation |
1KHz |
dB |
35 |
25 |
|
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C.07 |
Mute Effect |
1KHz |
dB |
55 |
45 |
|
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C.08 |
Aux Cross Talk CD (Tuner) W/B.P.F |
1K/10K |
dB |
55 |
50 |
|
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C.09 |
Function Level Deference (450mV/500mV) |
IN |
dB |
0 |
+/-5 |
|
|
|
(1KHz 0dB) |
CD |
dB |
0 |
+11 |
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22.5KHz Mod. |
FM |
dB |
0 |
-10 |
|
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|
(30% Mod) |
MW |
dB |
0 |
-10 |
|
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|
1KHz -4dB INPUT |
Tape play |
dB |
0 |
0 |
|
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|
Recording CD -10dB |
Tape R/P |
dB |
0 |
+/-5 |
|
|
C.10 |
Frequency Response |
100Hz |
dB |
+-3 |
+5/-3 |
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|
1KHz |
dB |
0 |
0 |
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|
2KHz |
dB |
+-1 |
+/-3 |
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|
10KHz |
dB |
+-1 |
+/-3 |
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page 4
PERFORMANCE SPECIFICATIONS
CD SECTION : PC-X270
|
Test Items |
|
|
Unit |
Nominal |
Limit |
#1 |
#2 |
1 |
Flat (Bass off) |
|
100Hz |
dB |
0 |
-3 |
|
|
|
|
|
10KHz |
dB |
+2 |
-3 |
|
|
|
Rock (Bass off) |
|
100Hz |
dB |
+10 |
+13 |
|
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|
10KHz |
dB |
+5 |
+1 |
|
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|
Jazz (Bass off) |
|
100Hz |
dB |
-4 |
-6 |
|
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|
10KHz |
dB |
-3 |
-5 |
|
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|
Pop (Bass off) |
|
100Hz |
dB |
0 |
-10 |
|
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|
10KHz |
dB |
0 |
-8 |
|
|
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Classic (Bass off) |
|
100Hz |
dB |
+1 |
-5 |
|
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|
10KHz |
dB |
+4 |
-10 |
|
|
2 |
HPS VR 50% |
|
100Hz |
dB |
+10 |
+5 |
|
|
3 |
Frequency Response TCD-782 |
|
100Hz |
dB |
+3 |
-3 |
|
|
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|
10KHz |
dB |
+3 |
-3 |
|
|
|
|
|
20KHz |
dB |
+3 |
-8 |
|
|
4 |
Signal to Noise Ratio (Unweighted) |
|
1KHz |
dB |
60 |
50 |
|
|
5 |
Dynamic Range |
|
1KHz |
dB |
60 |
50 |
|
|
6 |
Channel Seperation |
|
1KHz |
dB |
45 |
30 |
|
|
7 |
Total Harmonic Distortion TCD-782 |
|
1KHz(0dB) |
% |
25 |
33 |
|
|
8 |
Total Harmonic Distortion TCD-782 |
|
1KHz(-10dB) |
% |
1 |
3.5 |
|
|
9 |
Channel Unbalance TCD-782 |
|
1KHz |
dB |
|
< 3 |
|
|
10 |
Short Access Time TCD-782 |
|
|
Secs |
2 |
4 |
|
|
11 |
Long Access Time (Stop to TR24) TCD-782 |
444 |
Secs |
5 |
13 |
|
|
|
12 |
Interruption |
|
TCD725B |
um |
0.8 |
0.6 |
|
|
13 |
Black Dot |
|
TCD725B |
um |
|
65 |
|
|
14 |
Finger Printo |
|
TCD725B |
um |
65 |
|
|
|
15 |
Output Power at 10% THD T112(AC)(1-CH Load Only) |
1KHz |
W |
|
5 |
|
|
|
16 |
Max. Vol. Audio Power Output (0dB) |
|
1KHz |
W |
|
|
|
|
17 |
Skip Test (Madonna,Bass/Surr ON) |
|
TR 17 |
Vol.Max. |
|
NO SKIP |
|
|
18 |
Min Volume Noise (SP OUT) |
|
TCD-782 |
mV |
|
< 3.5 |
|
|
19 |
Max. Volume Noise |
|
TCD-782 |
mV |
5 |
12 |
|
|
20 |
Eccentricity |
|
TCD-782 |
um |
0.74 |
0.63 |
|
|
21 |
Vertical Deviation |
|
TCD-782 |
mm |
8.6 |
10.8 |
|
|
22 |
Dropout Voltage 0dB |
(DC) |
1 KHz |
V |
8.6 |
10.8 |
|
|
|
|
(AC) |
1 KHz |
% |
|
70 |
|
|
page 5
PERFORMANCE SPECIFICATIONS
CASSETTE SECTION : PC-X270
|
Test Items |
|
TAPE |
|
Unit |
Nomina |
Limit |
#1 |
#2 |
|
T.01 |
Playback S/N Ratio (Unweighted)-12 |
A |
|
B |
|
dB |
45 |
35 |
|
|
T.02 |
Playback THK-T118 (at Ref O/P) |
A |
|
B |
|
% |
1 |
3 |
|
|
|
|
|
|
|
|
|
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|
T.03 |
Channel Seperation (PB Only)-T141 |
A |
|
B |
1KHz |
dB |
40 |
30 |
|
|
T.04 |
Track Crosstalk (PB Only)-T121 |
A |
|
B |
1KHz |
dB |
40 |
30 |
|
|
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T.05 |
Tape Speed Deviation-T111 |
A |
|
B |
3KHz |
KHz |
4.75CM/S |
+-3 |
|
|
|
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|
|
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T.06 |
L/R CH. Difference |
A |
|
B |
|
dB |
0 |
+-3 |
|
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T.07 |
Wow and Flutter-JIS weighted-T111 |
A |
|
B |
P/B Only |
% |
|
0.35 |
|
|
|
|
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|
|
R/P |
-- |
-- |
0.5 |
|
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T.08 |
Winding Time C-60 Type |
A |
|
B |
F.Few |
Secs |
|
< 170 |
|
|
|
|
|
|
|
Play |
Secs |
|
< 170 |
|
|
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T.09 |
Torque |
A |
|
B |
Rewind |
gm-cm |
|
35-70 |
|
|
|
|
|
|
|
F.F |
gm-cm |
75 |
55 |
|
|
|
|
|
|
|
1KHz |
gm-cm |
75 |
55 |
|
|
T.10 |
P/R Dist. at Standard O/P |
A |
|
|
1KHz |
% |
2 |
7 |
|
|
T.11 |
R/P Difference (CD-10dB 1KHz) |
A |
|
|
1KHz |
dB |
+3 |
-3 |
|
|
T.12 |
R/P Separation (W/1KHz BPF) |
A |
|
B |
1KHz |
dB |
35 |
30 |
|
|
T.13 |
R/P Cross Talk (W/1KHz BPF) |
A |
|
B |
1KHz |
dB |
45 |
40 |
|
|
T.14 |
R/P S/N Ratio (W/1KHz BPF) |
A |
|
|
1KHz |
dB |
60 |
35 |
|
|
T.15 |
R/P Erase Ratio (W/1KHz BPF) |
A |
|
|
1KHz |
dB |
60 |
35 |
|
|
T.16 |
R/P Channel Balance |
A |
|
|
|
|
0 |
+-3 |
|
|
T.17 |
R/P Freq. Response 1KHz Ref |
|
|
|
125Hz |
dB |
+-1 |
+-3 |
|
|
|
|
|
|
|
6K3 |
dB |
+-1 |
+3/-6 |
|
|
T.18 |
Min. Volume Hum |
A |
|
|
Play |
mV |
|
< 3.5 |
|
|
T.19 |
Max. Volume Hum & Noise |
A |
|
|
|
mV |
30 |
80 |
|
|
T.20 |
Output Power at 10% THD-T112 0dB(AC) |
A |
|
B |
1KHz |
W |
|
5 |
|
|
|
(1-CH Load Only) |
|
|
|
|
|
|
|
|
|
T.21 |
AC Bais FREQ. |
|
|
|
|
KHz |
65 |
+0.5 |
|
|
T.22 |
ALC Effect-65dB(-45dB INPUT) |
A |
|
B |
|
dB |
0 |
5 |
|
|
page 6
IC &TRANSISTOR VOLTAGES |
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MODEL : PC-X270 |
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||||||||||
IC901 LA9242M(CD P/B MODE) |
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Pin No. |
|
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
Voltage (v) |
2.57 |
2.57 |
2.61 |
|
2.61 |
2.55 |
2.50 |
2.55 |
2.50 |
2.50 |
2.57 |
2.57 |
2.57 |
2.50 |
2.50 |
2.70 |
2.52 |
|
Pin No. |
|
17 |
18 |
19 |
|
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
Voltage (v) |
2.50 |
2.50 |
2.50 |
|
2.50 |
2.50 |
0 |
2.50 |
2.50 |
2.50 |
2.50 |
3.01 |
2.50 |
2.5 |
2.2 |
2.3 |
0 |
|
Pin No. |
|
33 |
34 |
35 |
|
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
Voltage (v)(play) |
0 |
5.05 |
0 |
|
0.8 |
0 |
4.0 |
0 |
0.4 |
2.20 |
2.47 |
2.50 |
2.56 |
0 |
2.50 |
2.61 |
0 |
|
Pin No. |
|
49 |
50 |
51 |
|
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
62 |
63 |
64 |
Voltage (v)(play) |
0.05 |
2.41 |
4.06 |
|
0 |
0.02 |
4.92 |
0 |
5.05 |
2.50 |
2.50 |
2.35 |
2.37 |
2.20 |
3.22 |
0.21 |
5.05 |
|
IC902 LC78622E(CD P/B MODE) |
|
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Pin No. |
|
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
Voltage (v) |
0 |
0 |
1.47 |
|
0 |
1.60 |
5.05 |
0.32 |
0.02 |
2.56 |
2.50 |
0.02 |
0.60 |
0 |
0 |
0.05 |
1.40 |
|
Pin No. |
|
17 |
18 |
19 |
|
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
Voltage (v) |
0 |
5.05 |
0 |
|
0 |
2.40 |
5.05 |
5.06 |
0 |
0 |
0 |
0.04 |
5.05 |
0.04 |
0.04 |
2.35 |
0 |
|
Pin No. |
|
33 |
34 |
35 |
|
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
Voltage (v)(play) |
0 |
0.01 |
0.02 |
|
4.25 |
1.70 |
0.01 |
0.01 |
1.70 |
4.25 |
0.02 |
5.04 |
2.12 |
2.11 |
0 |
0.1 |
0.15 |
|
Pin No. |
|
49 |
50 |
51 |
|
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
62 |
63 |
64 |
Voltage (v)(play) |
0.1 |
2.50 |
0.04 |
|
2.50 |
1.85 |
0 |
0 |
0 |
4.0 |
5.0 |
0 |
2.21 |
2.34 |
0 |
0 |
0 |
|
IC903 LA6541D (CD P/B MODE) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
Pin No. |
|
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
Voltage (v) |
8.6 |
0.8 |
2.74 |
|
2.55 |
4.24 |
3.64 |
0 |
0 |
0 |
3.80 |
4.00 |
2.56 |
2.64 |
5.05 |
8.01 |
5.00 |
|
Pin No. |
|
17 |
18 |
19 |
|
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
Voltage (v) |
4.92 |
2.60 |
2.56 |
|
4.00 |
3.84 |
0 |
0 |
0 |
3.96 |
3.90 |
2.56 |
2.50 |
2.56 |
8.6 |
|
|
|
IC701 LC587008 (CD P/B MODE) |
|
|
|
|
|
|
|
|
|
|
|
|
||||||
Pin No. |
|
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
Voltage (v)(stop) |
2.2 |
2.2 |
1.75 |
|
3.10 |
4.3 |
4.3 |
0 |
0 |
4.27 |
2.2 |
0 |
4.3 |
0 |
0 |
0.6 |
0.6 |
|
Pin No. |
|
17 |
18 |
19 |
|
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
31 |
32 |
Voltage (v) |
4.8 |
4.4 |
2.17 |
|
1.3 |
1.5 |
2.89 |
0 |
4.3 |
1.7 |
2.2 |
4.6 |
4.6 |
4.8 |
1.3 |
0.05 |
0.05 |
|
Pin No. |
|
33 |
34 |
35 |
|
36 |
37 |
38 |
39 |
40 |
41 |
42 |
43 |
44 |
45 |
46 |
47 |
48 |
Voltage (v)(play) |
0.05 |
0 |
4.3 |
|
4.3 |
2.4 |
4.3 |
1.6 |
1.55 |
0 |
3.9 |
0 |
4.7 |
4.1 |
0 |
0 |
0 |
|
Pin No. |
|
49 |
50 |
51 |
|
52 |
53 |
54 |
55 |
56 |
57 |
58 |
59 |
60 |
61 |
62 |
63 |
64 |
Voltage (v)(play) |
0 |
1.5 |
0 |
|
0 |
0 |
0 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
|
Pin No. |
|
65 |
66 |
67 |
|
68 |
69 |
70 |
71 |
72 |
73 |
74 |
75 |
76 |
77 |
78 |
79 |
80 |
Voltage (v)(play) |
2.2 |
2.2 |
2.2 |
|
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
2.2 |
|
IC101 LA1823 (RADIO MODE) |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||
Pin No. |
|
1 |
2 |
3 |
|
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
AM Voltage |
(v) |
1.24 |
1.24 |
4.9 |
|
4.9 |
2.70 |
0 |
0 |
4.8 |
4.9 |
1.24 |
1.24 |
0.5 |
4.3 |
0.36 |
0.15 |
1.26 |
FMS Voltage |
(v) |
1.24 |
1.24 |
4.9 |
|
4.9 |
2.54 |
0 |
0 |
0 |
4.9 |
1.24 |
1.24 |
1.0 |
4.1 |
4.2 |
4.2 |
1.26 |
FM Voltage |
(v) |
1.24 |
1.24 |
4.9 |
|
4.9 |
2.54 |
0 |
0 |
4.8 |
4.9 |
1.24 |
1.24 |
0.16 |
4.1 |
4.2 |
4.2 |
1.26 |
Pin No. |
|
17 |
18 |
19 |
|
20 |
21 |
22 |
23 |
24 |
|
|
|
|
|
|
|
|
AM Voltage |
(v) |
1.26 |
1.24 |
0.66 |
|
4.9 |
4.9 |
4.9 |
0 |
0 |
|
|
|
|
|
|
|
|
FMS Voltage |
(v) |
1.26 |
1.24 |
1.06 |
|
4.9 |
4.9 |
4.9 |
0 |
0.8 |
|
|
|
|
|
|
|
|
FM Voltage |
(v) |
1.26 |
1.24 |
1.1 |
|
4.9 |
4.9 |
4.9 |
0 |
0.8 |
|
|
|
|
|
|
|
|
page1
IC102 LC72131 (RADIO MODE)
Pin No. |
|
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
AM Voltage |
(v) |
2.40 |
0 |
0.12 |
0.12 |
0.12 |
4.74 |
0.15 |
0.02 |
0 |
0 |
0 |
0 |
0 |
0 |
2.4 |
0 |
FMS Voltage |
(v) |
2.40 |
0 |
0.12 |
0.12 |
0.12 |
4.74 |
4.2 |
4.2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2.4 |
FM Voltage |
(v) |
2.40 |
0 |
0.12 |
0.12 |
0.12 |
4.8 |
4.2 |
4.2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2.4 |
Pin No. |
|
17 |
18 |
19 |
20 |
21 |
22 |
|
|
|
|
|
|
|
|
|
|
AM Voltage (v) |
4.9 |
0.95 |
0.95 |
1.5 |
0 |
2.4 |
FM MO 88.1MHz |
|
|
|
|
|
|||||
FMS Voltage (v) |
4.9 |
0.9 |
0.9 |
2.2 |
0 |
2.4 |
|
FM ST 87.9MHz |
|
|
|
|
|
||||
FM Voltage |
(v) |
4.9 |
0.9 |
0.9 |
2.2 |
0 |
2.4 |
|
|
|
|
|
|
|
|
|
|
IC201 BA3126N (TAPE MODE)
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
Voltage (v)P/R |
0 |
0 |
0 |
0/4.2 |
0 |
6.8/6.5 |
0 |
0 |
0 |
IC501 LC75342 (TAPE/EQ at FLAT MODE)
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
|
Voltage |
(v) |
0.12 |
0.12 |
0 |
0 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
0 |
0 |
Pin No. |
17 |
18 |
19 |
20 |
21 |
22 |
23 |
24 |
25 |
26 |
27 |
28 |
29 |
30 |
|
|
|
Voltage |
(v) |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
5.3 |
0 |
5.3 |
7.0 |
0.12 |
|
|
IC203 BA3308 (R/B MODE)
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
Voltage (v) |
1.81 |
0 |
1.82 |
0 |
1.01 |
5.7 |
1.82 |
0 |
1.82 |
IC202 BA3416L (TAPE MODE)
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
16 |
|
Voltage |
(v) P/B |
0 |
0 |
0 |
0 |
0.62 |
0.62 |
0.07 |
0 |
0 |
6.9 |
1.91 |
7.32 |
3.2 |
3.3 |
0 |
0 |
Voltage |
(v) P/A |
0 |
0 |
0 |
0 |
0.62 |
0.62 |
0 |
0 |
0 |
6.9 |
0.68 |
7.3 |
3.2 |
3.3 |
0 |
0 |
Pin No. |
17 |
18 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Voltage |
(v) P/B |
0 |
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Voltage |
(v) P/A |
0 |
0 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
IC301 BA5417 (P/B MODE)
Pin No. |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
15 |
Voltage (v) P/B |
0 |
13.3 |
7 |
13.7 |
7 |
13.3 |
0 |
7.8 |
7.5 |
0.58 |
0 |
0 |
0.58 |
0 |
0 |
Transistors ( TUN MODE)
Transistor No. |
|
Q101 |
|
|
Q107 |
|
|
Q108 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
Voltage (V) |
5.5 |
8.6 |
4.9 |
7.9 |
8.73 |
8.75 |
0.7 |
0.1 |
0 |
Transistors (CD MODE)
Transistor No. |
|
Q906 |
|
|
Q907 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
Voltage (v) |
7.8 |
8.5 |
8.7 |
0.7 |
0.1 |
0 |
page2
Transistors (FM MODE)
Transistor No. |
|
Q401 |
|
|
Q402 |
|
|
Q403 |
|
|
Q404 |
|
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
|
POWER ON(V) |
13.1 |
13.8 |
13.9 |
0.6 |
0.2 |
0 |
5.6 |
13.9 |
5.0 |
9.4 |
13.5 |
8.7 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Transistor No. |
|
Q406 |
|
|
Q407 |
|
|
Q506 |
|
|
|
|
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
|
|
|
|
POWER ON (v) |
0.67 |
0.13 |
0 |
7.2 |
7.9 |
7.96 |
9.4 |
13.7 |
8.8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Transistor No. |
|
Q408 |
|
|
Q409 |
|
|
Q410 |
|
|
|
|
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
|
|
|
|
LAMP ON(V) |
0.67 |
0.1 |
0 |
12.2 |
12.9 |
13.0 |
5.6 |
11.0 |
4.92 |
|
|
|
|
Transistors (CD P/B 100Hz MODE) |
|
|
|
|
|
|
|
|
|||||
Transistor No. |
|
Q303 |
|
|
Q304 |
|
|
Q501 |
|
|
Q502 |
|
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
|
MAX |
VOL(V) |
0.6 |
0 |
0 |
8.1 |
8.2 |
8.7 |
5.8 |
5.2 |
5.2 |
5.8 |
5.2 |
5.2 |
MIN |
VOL(V) |
0 |
8.0 |
0 |
5.1 |
8.1 |
8.7 |
0 |
5.2 |
5.2 |
0 |
5.2 |
5.2 |
Transistor No. |
|
Q512 |
|
|
Q301 |
|
|
Q302 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
MUTE ON(CD,TUN) |
0 |
3.2 |
0 |
0.64 |
0 |
0 |
0.64 |
0 |
0 |
MUTE OFF(V) |
0.6 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Transistors (TAPE MODE)
Transistor No. |
|
Q214 |
|
Pin Name |
B |
C |
E |
Voltage (V) |
8.3 |
13.0 |
7.7 |
Transistor No. |
|
Q205 |
|
|
Q208 |
|
|
Q801 |
|
|
Q802 |
|
|
Q803 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
Voltage(V) PLAY |
/ |
/ |
/ |
0 |
7.6 |
0 |
/ |
/ |
/ |
/ |
/ |
/ |
0.1 |
4.7 |
0 |
Voltage(V) REC. |
0.6 |
0.1 |
0 |
4.7 |
6.8 |
4.2 |
1.0 |
5.8 |
0.4 |
0.6 |
0 |
0 |
0.6 |
0 |
0 |
Transistors (TAPE MODE)
Transistor No. |
|
Q203 |
|
|
Q204 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
Voltage (V) PLAY |
0.6 |
0 |
0 |
/ |
/ |
/ |
Voltage (V) REC. |
0 |
4.2 |
0 |
6.0 |
6.7 |
6.8 |
Transistors (TUN MODE)
Transistor No. |
|
Q105 |
|
|
Q106 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
Voltage(V) AM |
/ |
/ |
/ |
0.6 |
0 |
0 |
Voltage(V) FM |
1.3 |
2.3 |
0.6 |
0.6 |
0.1 |
0 |
Transistor No. |
|
Q904 |
|
|
Q903 |
|
|
Q908 |
|
|
Q914 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
Voltage(V) PLAY |
0 |
0 |
0 |
0 |
0 |
0 |
7.8 |
4.98 |
8.5 |
3.3 |
1.8 |
4.0 |
Voltage(V) STOP |
0.6 |
0 |
0 |
0.6 |
0 |
0 |
7.9 |
5.0 |
8.5 |
4.2 |
1.5 |
4.8 |
|
|
|
|
|
|
|
|
|
|
|
|
|
Transistor No. |
|
Q705 |
|
|
Q706 |
|
|
Q707 |
|
|
Q708 |
|
Pin Name |
B |
C |
E |
B |
C |
E |
B |
C |
E |
B |
C |
E |
POWER ON (V) |
0 |
4.4 |
0 |
4.9 |
0 |
4.3 |
4.3 |
0 |
2.5 |
0 |
4.3 |
0 |
page3
Diagram Block
24 |
23 |
22 |
21 |
20 |
19 |
18 |
17 |
16 |
15 |
14 |
13 |
|
GND2 |
|
VCC2 |
FM |
|
MUTE |
DECODER |
PHASE |
PILOT |
FM |
|
|
|
|
|
|
|
|
|
COMP |
DET |
DET |
|
|
|
|
|
OSC |
|
|
|
|
|
|
|
FM |
|
|
|
|
|
ST SW |
VCO |
FF |
FF |
FF |
|
RF |
|
|
|
|
|
|
|||||
|
|
|
|
FM |
|
TRIG |
|
|
|
LA1823 |
|
|
|
|
|
MIX |
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|||
AM |
|
AM |
|
|
|
|
|
|
|
|
|
RF |
|
MIX |
|
|
|
SD |
ST |
|
FM |
AM |
AGC |
|
|
|
|
|
|
|
S-METER |
DET |
|||
|
|
|
|
|
|
|
|
|
|
||
|
|
AM |
OSC |
|
|
|
|
|
|
|
|
|
|
BUFFER |
|
|
IF |
|
|
FM |
AM |
|
|
|
|
OSC |
|
|
|
|
|
|
|||
|
REG |
|
VCC1 |
|
GND1 |
BUFFER |
|
|
IF |
IF |
|
|
|
|
|
|
|
|
|
|
|||
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
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