Sony ST-SE370 - Tuner, Руководство по обслуживанию

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ST-SE370
NOTE : The preset data will be erased when this test mode is used. Therefore, take down the data before setting this mode and preset the data
again after completing operations in this mode.
1. Display Tube and Key Check Mode
1-1. Display Tube Check
1-1-1. Turn OFF the power.
1-1-2. While pressing
1 and BAND together, turn ON POWER .
1-1-3. While continuously pressing 1 and BAND together, check the following.
(1) All light up
1-2. Key Check
1-2-1. Release 1 and BAND . The KEY CHECK mode will be set.
1-2-2. All key numbers will be displayed. Key Number : 23
1-2-3. Each time the key is pressed, the key number will be counted down.
Each key will be counted only once, at the first time.
1-2-4. When all keys have been pressed, the process will end and the factory preset will be entered.
2. Entering the Factory Preset
To skip “1. Display Tube Key Check Mode”, and factory preset :
(1) Turn OFF the power.
(2) While pressing
3 and BAND together, turn ON POWER .
3. Circuit Check Mode
Set to the reception frequency that the circuit can receive (FM : STEREO, RDS stations). (Set the input level to above 70 dB.)
This enables circuit check to be performed in any of the reception modes-FM, AM (MW, LW). Set to a desired band before setting the test
mode.
(1) Turn OFF the power.
(2) While pressing
4 and BAND together, turn ON POWER .
• The items in the following table will be checked automatically in order every 2 seconds.
SECTION 3
TEST MODE
(2) 8-digit test pattern
(3) 2-digit test pattern
The display changes every 500 msec.
Microcomputer version indication (1 sec)
t
All light up (1)
t
8-digit test pattern (2)
t
2-digit test pattern (3)
T
FM RDS
Display
Items
TUNED
IF
SIG L
ST
RDS
AST signal = LOW
IF COUNT OK
SI LEVEL 70dB
ST signal = LOW
RDS DATA OK
DISPLAY
OK or NG
OK or NG
OK or NG
OK or NG
OK or NG
AM (MW, LW)
OK or NG
NG
IC201 NG, RV201 adjustments
TB101, IC201 NG
TB101 NG
TB101 NG
IC801 NG
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