 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
24709100 Datasheet(PDF) 13 Page - Toshiba Semiconductor |
|
||||||||||||||||||||||||||||||
24709100 Datasheet(HTML) 13 Page - Toshiba Semiconductor |
|
|
13 / 44 page  – 13 – CIRCUIT CHECKS Troubleshooting Guide for Fail Safe Circuit HIGH VOLTAGE CHECK CAUTION: There is no HIGH VOLTAGE ADJUSTMENT on this chassis. Checking should be done following the steps below. 1. Connect an accurate high voltage meter to the second an- ode of the picture tube. 2. Turn on the receiver. Set the BRIGHTNESS and CON- TRAST controls to minimum (zero beam current). 3. High voltage must be measured below (B) kV. Refer to table-1 for high voltage (B). (See SETTING & ADJUSTING DATA on page 14) 4. Vary the BRIGHTNESS control to both extremes to be sure the high voltage does not exceed the limit under any con- ditions. FS CIRCUIT CHECK The Fail Safe (FS) circuit check is indispensable for the final check in servicing. Checking should be done following the steps below. 1. Turn the receiver on and press the RESET button. 2. Temporarily short TP-(R) and TP-(X) with a jumper wire. Raster and sound will disappear. 3. The receiver must remain in this state even after removing the jumper wire. This is the evidence that the FS circuit is functioning properly. 4. To obtain a picture again, temporarily turn the receiver off and allow the FS circuit more than 5 seconds to reset. Then turn the power switch on to produce a normal pic- ture. Check that the set returns to normal operation when pin 12 of Z801(or emitter of Q472) is grounded with jumper wire. Check the voltage across Capacitor C471 is approximately (C) volts. Refer to table –4 for Fail safe det. voltage (C). Faulty power circuit or hori- zontal circuit. Defective Fail Safe Circuit (See SETTING & ADJUSTING DATA on page14) YES NO NO YES |
Similar Part No. - 24709100 |
|
Similar Description - 24709100 |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
