1 - 37
1.6.3
Power rising/falling edge sequence control function
Functions
• Inverter control:
The microcomputer pin 57 P_INVT is used to control the inverter lighting, and the microcom-
puter pin 59 PRO_DLY is used to control the validity of the inverter's protection circuit. The
ASIC PWM output DUTYCINV is used to control the royer oscillation of inverter. The micro-
computer can control panel dimming by controlling the ASIC PWM output frequency. The
inverter control signal timing specifications at the power's rising edge are shown below.
• Power board control
The microcomputer pin 53 P_SAVE is used to control the switching of the power board's PRC
mode and resonance mode. The sequence at the power's rising edge is shown below. During
power save, operation takes place at the PRC mode having good power efficiency. However,
as a high load current cannot be passed (maximum approx. 1A at 12V), the resonance mode
in which a load current can be applied is used normally.
µ
-COM Pin No.
53
59
47 ~ 51
57
58
56
55
54
60
52
I/O
O
O
I/O
O
O
O
O
O
O
O
Signal name
Remarks
Function
P_SAVE
PRO_DLY
MS*, RSTN
P_INVT
P_PANEL
P_SUSP1
P_SUSP2
P_SUSP3
P_ON
P_TMDS
PWB-POWER
PWB-POWER
ASIC
PWB-POWER
DTC114EUA
SI3025LSA
SI3025LSA
NJM2870F25
PQ1U501M2ZP
SI3033LSA
PRC mode of power borad : Lo / resonance mode : Hi switching
Inverter protection circuit Invalid : Lo/Valid : Hi
ASIC control (for DUTYCINV : PWM for inverter royer oscillation)
Inverter lighting control Off : Lo / On : Hi
Panel 5V power OFF : Lo / ON : Hi
A2_5V power
OFF : Lo / ON : Hi
D2_5V power
OFF : Lo / ON : Hi
P2_5V power
OFF : Lo / ON : Hi
A5V power
OFF : Lo / ON : Hi
TM3_3V power
OFF : Lo / ON : Hi
List of control signals
P_INVT
PRO_DLY
DUTYCINV
100msec (Typ.)
1300msec (Typ.)
600msec (Typ.)
PRC MODE
RESONANCE MODE
RESONANCE MODE
PRC MODE
Stand-by
Stand-by
Full load
Full load
Power ON
Microcomputer signal
(P_SAVE)
Inverter
Содержание LCD1550X-BK
Страница 82: ...3 TROUBLE SHOOTING Contents No Power No Picture Abnormal Picture or Ineffective Adjustment 1 2 3 Page 1 2 4 ...
Страница 88: ...SCHEMATIC DIAGRAM POWER LCD1550X Normal Power Save 1ch Pin 4 2ch Pin 1 3ch Pin 2 4ch Pin 5 ...
Страница 89: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X ...
Страница 90: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X ...
Страница 91: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X ...
Страница 92: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X ...
Страница 96: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X ...
Страница 97: ...SCHEMATIC DIAGRAM INVERTER LCD1550X 1ch Q701 B 2ch Q702 B ...
Страница 98: ...SCHEMATIC DIAGRAM PWB SW LCD1550X ...
Страница 100: ...SCHEMATIC DIAGRAM POWER LCD1550X ...
Страница 101: ...SCHEMATIC DIAGRAM PWB MAIN POWER LCD1550X ...
Страница 102: ...SCHEMATIC DIAGRAM PWB MAIN INPUT LCD1550X ...
Страница 103: ...SCHEMATIC DIAGRAM PWB MAIN SYNC LCD1550X ...
Страница 104: ...SCHEMATIC DIAGRAM PWB MAIN TMDS LCD1550X ...
Страница 105: ...SCHEMATIC DIAGRAM PWB MAIN MC LCD1550X ...
Страница 106: ...SCHEMATIC DIAGRAM PWB MAIN ASIC LCD1550X ...
Страница 107: ...SCHEMATIC DIAGRAM INVERTER LCD1550X ...
Страница 108: ...SCHEMATIC DIAGRAM PWB SW LCD1550X ...
Страница 127: ... 16 Document No VSPF A028 Bave Average brightness of 1 to 9 10 50 90 90 10 50 5 1 2 3 6 9 8 7 4 ...
Страница 152: ...LCD1550X BROCHURE LiquidView SCALE NTS DIMENSION IN mm Fig 11A FRONT REAR FINAL CONDITION 420 297 ...
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