Friday, August 28, 2015

TOSHIBA 32AV500U SERVICE MODE AND POWER SUPPLY CIRCUIT

TOSHIBA 32AV500


SERVICE MODE AND POWER SUPPLY CIRCUIT 



ENTERING TO SERVICE MODE
Procedures
1) Press MUTE key of remote hand unit to indicate MUTE on screen.
2) Press again MUTE key of remote hand unit to keep pressing until the next procedure. (OSD display disappears.)
3) In the status of above (2), press MENU key on TV set.

(2) During service mode, indication S is displayed at upper right corner on screen.
(3) Service mode is not memorized as the last-memory.

POWER SUPPLY CIRCUIT 

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TEST SIGNAL SELECTION
The function of VIDEO test signal selection is cyclically changed with VIDEO key (remote unit) in Service mode.
Test signal No.
Name of pattern
0
Signal OFF
1
NTSC All Red signal
2
NTSC All Green signal
3
NTSC All Blue signal
4
NTSC Cross hatch
 5
NTSC All white signal
 6
PAL All Red signal
7
PAL All Green signal
8
PAL All Blue signal
 9
PAL Cross hatch
10
PAL All white signal
0
Signal OFF
SERVICE ADJUSTMENT
(1) ADJUSTMENT MENU INDICATION ON/OFF : MENU key(on TV set)
(2) During display of adjustment menu,the followings are effective.
1) Selection of adjustment item : POS UP/DN key (on TV/Remote unit)
2) Adjustment of each item : VOL UP/DN key (on TV/Remote unit)
3) Direct selection of adjustment item R CUTOFF : 1 POS (Remote unit) G CUTOFF : 2 POS (Remote unit) B CUTOFF : 3 POS (Remote unit)
4) Data setting for PC unit adjustment SUB CONTRAST : 4 POS (Remote unit) SUB COLOR : 5 POS (Remote unit) SUB TINT : 6 POS (Remote unit)
5) Screen adjustment mode ON/OFF: Previous
6) Test signal selection: VIDEO (Remote unit)
* In service mode, serviceable items are limited.
(3) Self check display : 9 POS (Remote unit)
* Cyclic display
(4) Initialization of memory (QA02 E2PROM) : CALL (Remote unit)+POS UP(TV)
Causion : All data of memory IC (including factory setting value) is initialized by this operation. (Replacement of memory IC is required.)
(5) Initialization of self check data : CALL (Remote unit)+POS DN(TV)
(6) BUS OFF : CALL (Remote unit)+VOL UP(TV)
Executing Self Diagnosis Function
Procedures
(1) Set to service mode.
(2) Pressing “9” key on remote unit displays self diagnosis result on screen. Every pressing changes mode as below. SERVICE mode SELF DIAGNOSIS mode M2 System version info Version check(QA01,QM24 etc)
(3) To exit from service mode, turn power off.