Power On Operation (TH-42PX25U)
TH-42PX25U-P CPU Requirements and Standby Circuit.
Refer to figure 24. When the unit is plugged into the AC line, the PF board provides
filtered AC voltage to the P-board through the connectors PF2 and P9. The AC is
applied to a standby circuit (D404, T410 and IC409) where the standby 7V is generated.
This voltage is applied to the 5V regulator circuit (Q552 and Q537) to generate the
standby 5V.
The standby 5V is applied to the microprocessors on the D-board (IC9701 and IC9709).
This voltage is also routed through the PA-board, to the microprocessor on the DG
board (IC001). 5V are also applied to the EEPROM and the remote receiver sensor.
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Summary of Contents for GP6DU
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Page 20: ...14 Figure 7 Video Block Diagram ...
Page 21: ...15 Figure 8 H Board Block Diagram ...
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Page 24: ...Figure 10 DG Board Block Diagram 18 ...
Page 37: ...Figure 23 TH 42PD25U Power on operation 31 ...
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Page 43: ...DG6 DG3 Figure 24 TH 42PX25U Power on operation 37 ...
Page 45: ...Figure 25 TH 42PX25U P Power on operation 39 ...
Page 49: ...4 1 Figure 26 TH 65XVS30 Power On operation 43 ...
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Page 55: ...49 Figure 28 TH 42PD25U PA board SOS detect ...
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Page 59: ...Figure 31 SS board SOS Detect 53 ...
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Page 87: ...IC9709 Figure 36 TH 42PX25U 3 3V_SOS_5V_SOS detect 81 ...
Page 89: ...Figure 38 SS SOS Detect 83 ...
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Page 94: ...Figure 40 3 3V SOS and 5V SOS Detect Circuit TH 42XVS30 88 ...
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Page 97: ...Figure 42 SC SOS Detect Circuit TH 42XVS30 91 ...
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Page 101: ...Figure 44 Power SOS and Fan SOS Detect Circuit TH 42XVS30 95 ...
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Page 103: ...TH 42XVS30 4X 3X 2X 7X 9X 5X 12X Figure 45 97 ...
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