Sharp 14BM2G Servicehandleiding - Pagina 15

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UA1 HOTEL MODE APPLICATION NOTE

The purpose of this HOTEL MODE is to enable hotel authorized person to store the tuned

programs as hotel channels, current volume as hotel volume (maximum volume), picture and

sound setting. In addition, The user will not be able to select Preset and Channel-setting func-

tions.

How to enable/disable the "Hotel Mode" ?

Ans: a) Select BLUE BACK function (under MENU-FEATURE selection) by R/C,

press the -/— (one/two digit) key and keep pressing it for five second, then you can

see the hotel mode with four digits password.

b) Key in the four digits password starting with number "1", "3", "7", "9", then the hotel

mode will be ENABLE condition, you can switch on/off the hotel mode by using R/C

(volume up/down) key.

HOTEL MODE ON

PASSWORD

****

Input 1, 3, 7 and 9 by R/C key.

* We recommend:

Before set the hotel mode, it is better to choose CH 1 & set SOUND VOLUME level Up to

75% full scale.

After set hotel mode, starting channel will be always ch 1 & maximum sound level out will

be set to 75% of full scale.

* If you set hotel mode in AV, starting channel will be the last ch which you received before

power off (same as normal operation).

CONDITION:

When using hotel mode, the user can ONLY control PICTURE, SOUND and FEATURE

selection. But, It will return to the previous hotel mode setting condition, after power off.

The user can't use: — CH-SETTING (OSD become violet) and Preset. Other functions is

allowed to be used.

Set VOL UP/DOWN by R/C key.

#1 Ch 1 is your selected

channel for hotel mode.

15-1

TROUBLE SHOOTING TABLE

NO RASTER

Check F701.

Normal

Check T701 pin (7) voltage

Abnormal

(Approx. 310V at 220V AC)

Check R701, R707 and

Normal

D709.

Check Secondary Main+B

T701 pin (17) voltage

Abnormal

(Approx. 115V)

Check D758, IC702, IC753

Check CRT connector

and R712.

K1-K5 bias.

Normal

Check

Check R615 and R618.

C787.

Does horizontal circuit

oscillate ?

Check IC801, IC751, D605

and Q601.

Blown out.

Replace the fuse.

The fuse is blown out again.

Check IC701, D701 and

C707.

Normal

D1001 (Power LED Green)

turns on.

YES

Abnormal

D1001 (Power LED Red)

turns on or turns ON/OFF.

Check

ON/OFF

IC801.

Checking the

protector circuit.

15-2