STR-DA5500ES - Sony Audio Service Manual (repair manual). Page 17

FLUORESCENT  INDICATOR  TUBE  PATTERN CHECK  
MODE
All fl uorescent segments are tested. When this test is activated, all 
segments turn on at the same time, then each segment turns on one 
after another.
Procedure:
1.  While pressing the [MOVIE (HD-D.C.S.)] and [HDMI IN] 

buttons, press the [POWER] button to turn on the main power.

2.  All segments and all LEDs turn on. Each time [DISPLAY] but-

ton to change as follows all on, test pattern 1, test pattern 2, all 
off, all on in this order.

S.F  LOCK  ON/OFF  CHANGE  MODE
Procedure:
1.  While pressing the [MUSIC] and [HDMI IN] buttons, press 

the [POWER] button to turn on the main power.

2.  Either the message “SF LOCK [OFF]” or “SF LOCK [ON]” 

appears.

SOUND  FIELD  CLEAR  MODE
The preset sound fi eld is cleared when this mode is activated. Use 
this mode before returning the product to clients upon completion 
of repair.
Procedure:
1.  While pressing the [MUSIC] button, press the [POWER] but-

ton to turn on the main power.

2.  The message “S. F. Initialize” appears and initialization is per-

formed.

TUNER  AM  STEP  CHANGE (9 kHz/10 kHz)  MODE 
(US and Canadian models only)
Either the 9 kHz step or 10 kHz step can be selected for the AM 
channel step.
Procedure:
1.  Press the [POWER] button to turn on the main power.
2.  Turn the [INPUT SELECTOR] dial to select the “AM”.
3.  Press the [POWER] button to turn off the main power.
4.  While pressing the [TUNING MODE] button, press the 

 

[POWER] button to turn on the main power.

5.  Either the message “AM 9k Step” or “AM 10k Step” appears, 

select the desired step.

MEMORY  CLEARING  MODE
All preset contents are cleared when this mode is activated. Use 
this mode before returning the product to clients upon completion 
of repair.
Procedure:
1.  While pressing the [TONE MODE] and [HDMI IN] buttons, 

press the [POWER] button to turn on the main power.

2.  The message “MEMORY CLEARING***” appears and the 

memories are reset to the default values.

3.  When done, the message “MEMORY CLEARED *” appears.

COMMAND  MODE  CHANGE  MODE
The command mode of the remote-commander which this set re-
ceives can be changed.
Procedure:
1.  While pressing the [2CH/A. DIRECT] button, press the [POW

ER] button to turn on the main power.

2.  Either the message “COMMAND MODE [AV1]” or “COM

MAND MODE [AV2]” appears. Select the desired mode.