HT-DDW5000, STR-KM5000 - Sony Audio Service Manual (repair manual). Page 13

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STR-KM5000
STR-KM5000
13
13
1.  DCAC DSP Data Line Checking
After press the [TUNING MODE] button, DCAC Factory test 
mode will start, below display will show:
 
“DCAC   x” 
x = 1, 2, 3, 4
   If there is error happen, below display will show:
 
“ERR SD0x”  x = 1 
→ D1501 or R1530 problem
 
 
x = 2 
→ D1502 problem 
 
 
x = 3 
→ D1503 problem 
 
 
x = 4 
→ D1504 problem 
2.  DCAC board Checking
Connect front left speaker of the receiver and AUTO CAL micro-
phone. Turn [MASTER VOLUME] jog, there will be test tone 
sound output from front left speaker, and the display will change 
accordingly.
 
“AD - xxx” 
xxx = 0 to 255 (depends on loudness of test tone)
RE-BOX  CLASSIFICATION  TEST  MODE
Procedure:
1.  While pressing the [MEMORY/ENTER] and [INPUTMODE] 
buttons, press the [
?/1
] button to turn on the main power.
2.  The message “R.BOX
[][][]XX” appears. 
 
XX: times set powered on
VACS  CONTROL  TEST  MODE
The VACS feature of the amplifi er is turned off purposely.
Procedure:
1.  While pressing the [MEMORY/ENTER] and [2CH] buttons, 
press the [
?/1
] button to turn on the main power.
2.  The message “VACS OFF” appears.
SECTION  5
ELECTRICAL  CHECK
FM  AUTO  STOP  CHECK
signal
generator
set
Procedure:
1.  Turn on the set.
2.  Input the following signal from signal generator to FM antenna 
input directly.
Carrier frequency : A = 87.5 MHz, B = 98 MHz, C = 108 MHz
Deviation 
: 75 kHz
Modulation 
: 1 kHz
ANT input 
: 1 kHz
Note:  Use 75 ohm coaxial cable to connect signal generator and the set. 
You cannot use video cable for checking.
 
Use signal generator whose output impedance is 75 ohm.
3.  Set to FM tuner function and scan the input FM signal with 
automatic scanning.
4. Confi rm that input frequency of A, B and C are detected and 
automatic scanning stops.
When the station signal is received in good condition, automatic 
scanning stops.
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