Table Of Contents - Toshiba TP43H60 Service Training

Contents
Main Power Supply............... 3
Overall Block Diagram .................................................................................... 4
Operation........................................................................................................... 5
Surge Protection Relay ................................................................................... 6
Start-up and Over Voltage Protect ................................................................. 7
Logic and Drivers............................................................................................. 8
Oscillator ........................................................................................................... 8
Oscillator Control ............................................................................................. 9
Latch .................................................................................................................. 9
Thermal Shock Detection Block .................................................................... 9
Over Current Protection................................................................................. 10
Soft Start ........................................................................................................... 10
Resonance Correction ................................................................................... 10
Additional Information on Q801 .................................................................... 11
Block Diagram of Q801 (STR-Z4117) ............................................................ 11
Pin Descriptions .............................................................................................. 11
Waveforms ....................................................................................................... 12
Troubleshooting Flowchart ........................................................................... 13
Shutdown Guide .................15
Summary of Shutdown Circuits .................................................................... 16
Peak-Response Meter .................................................................................... 17
No Peak-Response Meter .............................................................................. 18
Monitoring Circuits ......................................................................................... 18
X-Ray Protect ................................................................................................... 19
+125V Over Current Protect .......................................................................... 20
+36V Over Current Protect ............................................................................ 21
+18V and - 18V Over Current Protect .......................................................... 22
+35V Over Current Protect ............................................................................ 23
+9V Under Voltage Protect ............................................................................. 24
+35V Under Voltage Protect ........................................................................... 24
+200V Under Voltage Protect ........................................................................ 24
Troubleshooting Flowchart ........................................................................... 25