HT-DDW995, STR-K995 - Sony Audio Service Manual (repair manual). Page 12

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After press the  TUNING MODE  , 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

x = 2 

→ D1502 problem

x = 3 

→ D1503 problem

x = 4 

→ D1504 problem

Connect front left speaker of the receiver and AUTO CAL
microphone. 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)

The VACS feature of the amplifier is turned off purposely.
Procedure:

1. While depressing the  MEMORY/ENTER  and the  2CH

buttons simultaneously, press the power  ?/1  button to turn
on the main power.

2. “VACS OFF” appears. (8 second)

•

Either the 9 kHz step or 10 kHz step can be selected for the
AM channel step.

•

Procedure:
Set the FUNCTION to AM.  Turn off the main power.
While depressing the  TUNING MODE  button, press the
power  ?/1    button to turn on the main power.  Either the
message “9 k STEP” or “10 k STEP” appears.  Select the
desired step.

•

LED illumination check

1. While depressing the  TUNING MODE  and INPUT MODE

simultaneously, press  ?/1  . Then, “B. LED ON” or “B. LED
OFF” is displayed.

2. When “B. LED ON” is displayed, the LED of the “MULTI

CHANNEL DECODING” area at the top of the display
illuminates.