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Datex-Ohmeda ADU
D-18
Document No. 8502856
Figure 13
LCD block diagram
LCD interface board
General
The LCD Interface board is the interface between the Display controller board and the LCD Display
component. The keyboard is also connected to the Interface board as seen on the preceding
diagram.
The incoming signal to the LCD Interface board is pure analogue VGA - RGB with separate horizontal
and vertical synchronization signals as seen on the following diagram. The display element needs
digital RGB-signals, HSYNC, VSYNC, DOTCLK and a display timing signal DTMG. The DTMG signal
indicates that the digital RGB-signals are active.
The functions of this board are digitalization of the video signals, regeneration of the DOTCLK and
generation of the DTMG. The backlight driver is also located on this board.
Power supply
The DC/DC power supply is an isolated discontinuous mode flyback switcher. It has a current mode
PWM circuit and a separate FET switch on the primary side. The transformer has two secondary
windings, one for 5V and another for 12V. On the secondary side (5V), there is a separate chip on the
feedback path to drive the opto isolator.
Backlight unit
The backlight unit consists of two changeable tubes fed by a separate inverter board.
Содержание Anesthesia Delivery Unit S/5
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Страница 62: ...Maintenance Document No 8502852 5 4 Figure 1 Service menu overview ...
Страница 76: ...Datex Ohmeda ADU 5 18 Document No 8502852 Figure 24 Transformer unit Figure 25 Transformer unit 2 1 4 6 ...
Страница 80: ...Datex Ohmeda ADU 5 22 Document No 8502852 Figure 30 Compact Circuit A CC1 exploded view 5 1 2 3 4 ...
Страница 88: ...Maintenance 5 30 Document No 8502852 Figure 38 Maintenance parts ...
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Страница 132: ...Forms and charts 7 8 Document No 8502852 Pneumatic chart of the Electronic Ventilator A EV1 ...
Страница 133: ...Forms and charts Document No 8502852 7 9 Pneumatic chart of the Fresh Gas Control Unit A FGC1 ...
Страница 135: ...Forms and charts Document No 8502852 7 11 Pneumatic chart of Table frame without A FGFI ...
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Страница 137: ...Document No 8502852 7 13 Pneumatic chart of A WGU frame without A FGFI ...
Страница 138: ...7 14 Document No 8502852 Pneumatic chart of A WGU frame with A FGFI ...
Страница 139: ...Document No 8502852 7 15 Pneumatic chart of Table frame without A FGFI ...
Страница 140: ...7 16 Document No 8502852 Pneumatic diagram of table frame with A FGFI ...
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Страница 147: ...Technical bulletins Document No 8502852 9 1 9 TECHNICAL BULLETINS ...
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Страница 211: ...Spare parts A AUF Document No 8502853 A 59 Figure 53 Exploded view of the gas inlet block and the gas labels 4 1 2 3 ...
Страница 229: ...Technical description A FGC1 Document No 8502854 B 3 Figure 3 Technical principles of the A FGC1 ...
Страница 249: ...Technical description A FGC1 Document No 8502854 B 23 This page is intentionally left blank ...
Страница 257: ...Technical description A FGC1 Document No 8502854 B 31 Figure 25 CPU Board block diagram ...
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Страница 304: ...Datex Ohmeda ADU B 78 Document No 8502854 This page is intentionally left blank ...
Страница 307: ...Spare parts A FGC1 Document No 8502854 B 81 Figure 60 Fresh Gas Control Unit A FGC1 1 2 4 3 6 5 7 8 10 11 12 ...
Страница 311: ...Spare parts A FGC1 Document No 8502854 B 85 Figure 64 Parts inside the A FGC1 1 2 3 4 5 6 7 8 10 ii iii i iv 9 ...
Страница 319: ...Spare parts A FGC1 Document No 8502854 B 93 Figure 71 Gas connection unit 1 2 3 4 5 6 7 8 9 10 11 ...
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Страница 360: ...Datex Ohmeda ADU C 34 Document No 8502855 This page is intentionally left blank ...
Страница 362: ...Datex Ohmeda ADU C 36 Document No 8502855 The ventilator calibrating tree Figure 27 The ventilator calibrating tree ...
Страница 400: ...Datex Ohmeda ADU C 74 Document No 8502855 Ventilator diagnostic page layout Figure 42 Ventilator diagnostic page ...
Страница 408: ...Datex Ohmeda ADU C 82 Document No 8502855 This page is intentionally left blank ...
Страница 417: ...Spare parts A EV1 Document No 8502855 C 91 This page is intentionally left blank ...
Страница 421: ...Spare parts A EV1 Document No 8502855 C 95 This page is intentionally left blank ...
Страница 432: ...Datex Ohmeda ADU D 2 Document No 8502856 Figure 1 Principle of the Central Electronics ...
Страница 477: ...Troubleshooting A ELEC Document No 8502856 D 47 Trouble shooting PCMCIA Card Figure 57 Troubleshooting PCMCIA Card ...
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Страница 483: ...Spare parts A ELEC Document No 8502856 D 53 Figure 60 11 12 1 2 4 3 5 6 3 8 9 13 14 15 16 10 ...
Страница 486: ...Datex Ohmeda ADU D 56 Document No 8502856 Figure 63 Transformer unit Figure 64 Transformer unit 2 1 4 ...
Страница 487: ...Spare parts A ELEC Document No 8502856 D 57 Figure 65 Transformer unit 5 3 ...