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SX-20-K
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3. BASIC ITEMS FOR SERVICE
3.1 CHECK POINTS AFTER SERVICING
Item to be checked regarding audio
Distortion
Noise
Volume too low
Volume too high
Volume fluctuating
Sound interrupted
To keep the product quality after servicing, confirm recommended check points shown below.
See the table below for the items to be checked regarding audio.
No. Procedures
Check
points
1
Check the symptom pointed out by a customer
The pointed content should not reoccur
Sound and operation should not be defective
2
Check each input and main VOL (check the
operation of selector)
The sound is output by selecting an analog-connected input
with a selector and the sound volume should change by
rotating main VOL knob
3
Check the tone control, balance, and function
The sound quality or right and left balances should change
by rotating each VOL knob
4
Check DIRECT functions
The tone control should be disabled by setting DIRECT
function to ON.
6
Check SPEAKER A/B and headphone terminal
There should not be defect in sound such
5
Check the tuner (AM and FM) operations
Audio and operations must be normal.
as noise
7
Check the external package
Check scratch or taint is not generated after accepting the
repair
Содержание SX-20-K
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Страница 11: ...11 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F IC502 IC503 IC301 ...
Страница 32: ...32 SX 20 K 1 2 3 4 A B C D E F 1 2 3 4 Pin Function ...
Страница 46: ...46 SX 20 K 1 2 3 4 A B C D E F 1 2 3 4 9 2 EXTERIOR SECTION 1 x9 x3 x3 x2 x2 x2 x2 x4 B C E F G D ...
Страница 47: ...47 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F 1 x9 x5 x3 x3 x5 x6 x6 x5 x2 x15 x2 x2 x2 x4 x4 A A A ...
Страница 49: ...49 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F ...
Страница 59: ...59 SX 20 K 5 6 7 8 5 6 7 8 A B C D E F A SIDE B CP501 CP301 CP504 CP602 CP503B CP503A IC301 Q300 ...
