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52
GEX-P900DAB
7.2 TEST MODE
This unit is used together with a DAB control unit (e.g. DEX-P99R/EW, etc.). During Test mode, use the keys on the DAB
control unit.
All keys can be found on the remote control assembly, except the keys to enter Test mode.
• Entering Test mode:
Press the TA and Track Down keys simultaneously to reset the system.
• Exiting Test mode:
Set ACC to OFF.
-
Keys used in Test mode
Left key
Manual DOWN
To receive a lower frequency block.
Right key
Manual UP
To receive a higher frequency block.
CH 1
Switches display.
Normal display
↓
(Press the CH1 key.)
PLL IC communications checking display
↓
(After 2 seconds or when the CH 1 key is pressed)
SAA 3500 communications checking display
↓
(After 2 seconds or when the CH 1 key is pressed)
MPEG IC communications checking display
↓
(After 2 seconds or when the CH 1 key is pressed)
Test display
↓
(Press the CH 1 key.)
Returns to the normal display.
CH 2
Switches services.
Same as the Service UP key.
CH 3
ARC ON/OFF
Switches between ON and OFF of ARC.
Other keys are invalid.
-
Display in Test mode:
1) PLL IC communications checking display
No problem was found:
“PLL____OK”
A problem was found:
“PLL____ERR”
2) SAA 3500 communications checking display
No problem was found:
“DEC____OK”
A problem was found:
“DEC____ERR”
3) MPEG IC communications checking display
No problem was found:
“MPEG____OK”
A problem was found:
“MPEG____ERR”
4) Test display
1st column
2nd column
3rd column
4th column
5th column
6th column
7th column
8th column
Содержание CRT2193
Страница 4: ...4 GEX P900DAB 2 2 EXTERIOR ...
Страница 8: ...8 GEX P900DAB DIGITAL SECTION A 3 3 A 1 2 3 4 B C D 1 2 3 4 A a A b A a 1 3 ...
Страница 9: ...9 GEX P900DAB SYSTEM CONTROL RF SECTION A 2 3 5 6 7 8 A B C D 5 6 7 8 A a A b A a 1 3 ...
Страница 10: ...10 GEX P900DAB SELECTOR ISOLATOR MUTE POWER SUPPLY ASENSE BSENSE A 1 2 3 4 B C D 1 2 3 4 A a A b A b 1 3 ...
Страница 11: ...11 GEX P900DAB POWER SUPPLY ASENSE BSENSE POWER SUPPLY CEK1033 1 4mH 5 6 7 8 A B C D 5 6 7 8 A a A b A b 1 3 ...
Страница 14: ...14 GEX P900DAB BAND3 RF AMP L BAND RF AMP ANT DUMP POWER SUPPLY PLL A 1 2 3 4 B C D 1 2 3 4 A a A b A a 2 3 ...
Страница 15: ...15 GEX P900DAB L BAND DOWN CONVERTOR 5 6 7 8 A B C D 5 6 7 8 A a A b A a 2 3 ...
Страница 16: ...16 GEX P900DAB 2nd MIXER 1st MIXER PLL SL SAW FILTER NULL DETECTOR A 1 2 3 4 B C D 1 2 3 4 A a A b A b 2 3 ...
Страница 17: ...17 GEX P900DAB DIGITAL SECTION A 3 3 A 1 3 5 6 7 8 A B C D 5 6 7 8 A a A b A b 2 3 ...
Страница 20: ...20 GEX P900DAB DAB DECODER RF SECTION A 2 3 A 1 2 3 4 B C D 1 2 3 4 A a A b A a 3 3 ...
Страница 23: ...23 GEX P900DAB SELECTOR DAC OPT IN OUT A 1 3 5 6 7 8 A B C D 5 6 7 8 A a A b A b 3 3 ...
Страница 24: ...A MAIN UNIT 24 GEX P900DAB A 1 2 3 4 B C D 1 2 3 4 4 PCB CONNECTION DIAGRAM 4 1 MAIN UNIT A ...
Страница 26: ...26 GEX P900DAB A 1 2 3 4 B C D 1 2 3 4 A MAIN UNIT A ...
Страница 27: ...27 GEX P900DAB 5 6 7 8 A B C D 5 6 7 8 SIDE B A ...
Страница 42: ...42 GEX P900DAB AK4321VFP TC74HC126AF TC74HCT541AF ...
Страница 59: ...59 GEX P900DAB 7 3 2 BLOCK DIAGRAM A ...