Read Sharp HT-SB250 (serv.man2) Service Manual online
HT-SB250
2 – 1
CHAPTER 2. ADJUSTMENTS
[1] Test Mode
1. Enter the Test Mode version display
While pressing down ON/STANDBY and VOL UP button, ON AC supply.
Version will be display on 7 segment as below:-
S2 --> XX --> D
Version will be display on 7 segment as below:-
S2 --> XX --> D
S2 = Model name, SB250
XX= version no.
D = Destination
XX= version no.
D = Destination
2. Enter Key and Display Test Mode
After enter Test Mode version display, Press VOL UP button.
1. All SOUND MODE LED will light ON
2. 7 segment display will light on if press button as below
2. 7 segment display will light on if press button as below
3. Exit the Test Mode
While in Test Mode function, Press ON/STANDBY button to exit.
4. Error Code Description
5. System Protection indicator
In case abnormal power detection has occurred, the unit will automatically enter to stand-by mode ON/Standby LED willl be
flashing as below:-
flashing as below:-
Unit enter Protect mode when irregular process occur on power supply line.
1. System Protect
2. AVCK Protect
2. AVCK Protect
Key
7 segment
VOL DOWN
01
VOL UP
02
SURROUND
03
FUNCTION
04
Display
Explanation
Solution
E1
Communication error between Micom and WM8775
> Unplug AC cord and turn power ON again
> Check line connected between Micom and corresponding IC
> Check line connected between Micom and corresponding IC
E2
Communication error between Micom and NJU26040
E3
Communication error between Micom and STA333
OFF
OFF
Flashing
Flashing
ON
ON
No.1
No.2
1 Frame
Fig. Example for No. 2 AVCK Protect
No.1
No.2
OFF
OFF
(3 Sec)
(3 Sec)
(3 Sec)
(3 Sec)
(3 Sec)
(Repeat)
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