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Jands Electronics P/L

40 Kent Rd

Mascot NSW 2020

Australia

Ph (02) 9582-0909

9-Jul-1999 16:38:11

H:\LAB\EVENT4\CIRCUIT\Ev4mast3.sc2

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Sheet

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EVENT4 MASTER CARD

EV4MAST3

Drawn By:

VCC

10uF

-12

10uF

+12

VCC

100nF

VCC

100nF

VCC

100nF

VCC

C10

100nF

VCC

C11

100nF

VCC

C12

100nF

VCC

C13

100nF

VCC

C14

100nF

VCC

C15

100nF

VCC

C16

100nF

VCC

C17

100nF

VCC

C18

100nF

VCC

C19

100nF

VCC

C20

100nF

VCC

C21

100nF

VCC

C22

100nF

VCC

C23

100nF

VCC

C25

100nF

VCC

C26

100nF

VCC

C27

100nF

VCC

C28

100nF

VCC

C29

100nF

VCC

C30

100nF

VCC

C31

100nF

10K

C34

100nF

10K

C35

100nF

10K

C36

100nF

10K

C37

100nF

10K

C38

100nF

10K

C39

100nF

10K

C32

100nF

F(1..7)

FADTOP

FADBOT

R51

100K

S1A

Cherry

R52

100K

S2A

Cherry

R53

100K

S3A

Cherry

R54

100K

S4A

Cherry

R55

100K

S5A

Cherry

R56

100K

S6A

Cherry

R57

100K

S7A

Cherry

R58

100K

S8A

Cherry

R59

100K

S9A

Cherry

R60

100K

S10A

Cherry

R61

100K

S11A

Cherry

R62

100K

S12A

Cherry

R63

100K

S13A

Cherry

R64

100K

S14A

Cherry

R65

100K

S15A

Cherry

R86

100K

S16A

Cherry

R87

100K

S17A

Cherry

R88

100K

S18A

Cherry

R89

100K

S19A

Cherry

R90

100K

S20A

Cherry

R91

100K

S21A

Cherry

R92

100K

S22A

Cherry

R93

100K

S23A

Cherry

R94

100K

S24A

Cherry

R95

100K

S25A

Cherry

R96

100K

S26A

Cherry

R97

100K

S27A

Cherry

R98

100K

S28A

Cherry

R99

100K

S29A

Cherry

R100

100K

S30A

Cherry

R101

100K

S31A

Cherry

R102

100K

S32A

Cherry

R103

100K

S33A

Cherry

R104

100K

S34A

Cherry

R105

100K

S35A

Cherry

R106

100K

S36A

Cherry

R107

100K

S37A

Cherry

S2B

RED

R66

2K2

S6B

RED

R67

2K2

S4B

RED

R68

2K2

S5B

RED

R69

2K2

S9B

RED

R70

2K2

S7B

RED

R71

2K2

S8B

RED

R72

2K2

S12B

RED

R73

2K2

S24B

RED

R74

2K2

S10B

RED

R75

2K2

S11B

RED

R76

2K2

S30B

RED

R77

2K2

S31B

RED

R78

2K2

S32B

RED

R79

2K2

S25B

RED

R80

2K2

S26B

RED

R81

2K2

S27B

RED

R82

2K2

S28B

RED

R83

2K2

S22B

BICOLOUR

R84

S21B

BICOLOUR

R85

S23B

BICOLOUR

R50

L10

L11

L12

L13

L14

L15

L16

L17

L18

L19

L20

L21

L22

L23

L24

L(1..24)

S(1..37)

HOLD

FIXT

RATE

S10

S11

S12

S13

S14

S15

S16

S17

S18

S19

S20

S21

S22

S23

S24

S25

S26

S27

S28

S29

S30

S31

S32

S33

S34

S35

S36

S37

CONN4

5PIN

Содержание Event 4

Страница 1: ...Event 4 Technical Manual Revision 1 19 07 99 ...

Страница 2: ...aged to try to correct the interference by one or more of the following measures reorient or relocate the receiving antenna increase the separation between the equipment and receiver connect the equipment into an outlet on a different circuit from that to which the receiver is connected consult the dealer or an experienced radio television technician for help This Class B digital apparatus complie...

Страница 3: ...or Card 3 1 3 1 1 Boot ROM FLASH and RAM 3 1 3 1 2 Trim procedure 3 1 3 1 3 Battery 3 2 3 1 4 Logic 3 2 3 1 5 Desk Lamp Dimmer 3 2 3 1 6 DMX Outputs 3 2 3 1 7 Keyboard 3 2 3 1 8 Expansion Bus 3 3 3 2 Front Panel Cards 3 3 3 2 1 Card Select Jumpers 3 3 3 2 2 LCDs 3 3 4 DIP Switch Settings 4 1 5 Boot ROM inbuilt menu self tests setups etc 5 1 5 1 Entering the Boot Menu 5 1 5 2 Menu Usage 5 1 5 3 Boo...

Страница 4: ...X In 5 6 Vers 5 6 Trash RAM 5 6 Boot 5 6 6 Fault Finding Table 6 1 7 Maintenance 7 1 8 Technical Data and Specifications 8 1 Event 4 Specifications 8 1 9 Glossary of Terms 9 1 Appendix A History of Modifications 9 1 Appendix B Connector Pinouts 9 1 Appendix C Spare Parts 9 1 Appendix D DMX to MIDI adaptor 9 1 Appendix E 2 x DMX MIDI signal combiner 9 1 Appendix F Circuit diagrams 9 1 ...

Страница 5: ...on 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4CPU1 Circuit diagrams 9 2 EV4MAST3 Circuit diagrams 9 3 EV4ASN3 Circuit diagrams 9 4 EV4PRE3 Circuit diagrams 9 5 EV4PAL3 Circuit diagrams 9 6 BKLTSML0 Circuit diagrams 9 7 ...

Страница 6: ... is achieved by inserting a diskette with the new operating system and selecting the appropriate options in the boot menu The boot menu also provides other functions including console self tests Note that static sensitive devices are used throughout the console and normal handling precautions should be applied during service Note also that connections should never be made with the power switched o...

Страница 7: ...iver 5mm nut driver 1 Posidrive screwdriver 2 Posidrive screwdriver 2 2 Disassembly Access to the console is through the base To remove the base place the console face down onto soft padding Using the 2 posidrive screwdriver remove all and only the silver screws leaving the four black screws The base can then be lifted away To remove the PSU CPU assembly disconnect all cables to the CPU and PSU an...

Страница 8: ...lled including the DMX output connector Also check that the DMX connector wiring is located within the cutout section of the CPU card The CPU trim procedure should be followed if either the CPU or power supply have been changed or if the trim has been inadvertently adjusted Refer to section 3 1 2 Test the console fully before installing the base This includes the disk drive desk lamps back lights ...

Страница 9: ... 1 Boot ROM FLASH and RAM The CPU memory consists of a Boot EPROM IC25 four FLASH ROMs IC11 IC12 IC13 IC14 and four static RAMs IC16 19 The CPU card has the capacity to be fitted with a maximum of 2MBytes program memory four x 29F040 devices and 2MBytes show memory four x 512Kbyte devices Only AMD brand 29F040 FLASH devices should be used with boot software versions up to 0 5 3 1 2 Trim procedure ...

Страница 10: ...d by connecting an appropriate header to CONN3 If it is necessary to reprogram these devices in the field follow the instructions supplied with the kit 3 1 5 Desk Lamp Dimmer The desk lamp dimmer circuit consists of a PWM switching circuit protected by a PTC polyswitch The polyswitch will trip under overload conditions when it does LED L6 will extinguish Due to the nature of the polyswitch it is n...

Страница 11: ...set and Assign card selects the address of the card in the system When installing new cards ensure that the replacement card has its jumper in the same position as the card it is replacing The correct jumper position for a Preset or Assign card is equal to its position from the left eg the left most Preset and Assign cards have their jumpers set to 0 the next have it set to 1 etc Master and Palett...

Страница 12: ...TE At the time of printing all DIP switches should be off for normal console operation Dip SW1 no function Dip SW2 no function Dip SW3 no function Dip SW4 no function Dip SW5 no function Dip SW6 Enable main code diagnostics Dip SW7 Execute software from RAM use for development only Dip SW8 Reserved ...

Страница 13: ...ons are selected by pressing one of the five buttons above the programmer LCD or press EXIT to return to the previous menu 5 3 Boot Menu The following menu options are available in the opening menu 1 Continue 2 Load FLASH 3 Test 5 3 1 Continue Use this option to exit the boot menu and continue normal execution into the main operating software Use this option if the boot menu has been entered by mi...

Страница 14: ...the edge of L5 and L4 The data can be used to verify the correct operation of the CPU control signals The sequence of operations performed during this routine are shown in table 3 Event Signals of interest Comment Set Green LED L5 on L5 CRO Synchronisation Set Green LED L5 off L5 CRO Synchronisation Move 01 to 40010004 IC16 pin 29 Write to RAM bank 0 byte 0 Move 02 to 40010005 IC17 pin 29 Write to...

Страница 15: ...n 13 PC Memory Write Move 606A0000 to CPU IC65 pin 14 PC Memory Read Move 55 to 60000000 IC65 pin 50 PC IO Write Move 60000000 to CPU IC65 pin 49 PC IO Read Table 3 Bus exercise event summary Figure 1 shows the relationship between L5 IC16 WR and the CPU DACK signals as measured while running this test Figure 1 Sample waveform during Bus Exercise Trace 1 L5 Trace 2 IC16 Pin 29 WR Trace 3 IC1 pin 4...

Страница 16: ...ption to test the ports of the CPU card When selected the following options are displayed 1 VGA 2 DMX1 3 DMX2 4 MIDI VGA Test bars are displayed on the VGA and LCD screens for the purpose of checking colour VGA and grey scaling LCD Press enter to return to the normal menu when the screen results have been viewed DMX 1 The DMX1 output is connected to the MIDI input via the adaptor cable shown in Ap...

Страница 17: ...in Table 4 and can be used to verify correct operation of the majority of the front panel controls In general a pressed switch is indicated by its associated LED or the LCD if no LED available and fader values are displayed on the associated LCD or channel LED The Channel master levels and preset faders operate in familiar two preset mode with the levels appearing at both DMX outputs This test is ...

Страница 18: ...input Note also that the data pattern changes each time the test is run Press Exit to terminate the test Vers The software version of the test routines is output to L4 and L5 in flashes The green LED L5 flashes once at the start of the test The version is then displayed in red LED L4 flashes The version is also displayed on the master LCD at startup and for this reason this test is mainly for use ...

Страница 19: ...kette Disk not DOS format Format on a PC compatible computer DOS 3 0 and above Diskette damaged Replace diskette Poor quality diskette Use quality diskette Diskette drive damaged Replace diskette drive Fixture not available for patching Fixture library in console not up to date or corrupt Load latest library from library diskette No DMX output Incorrect patch Check patch Incorrect receiver address...

Страница 20: ...most all parts of the console can be damaged by physical abuse however there are a number of things that can be done to prevent this kind of damage Cover the console when not in use eg before after and between sets ALWAYS insert a diskette into the floppy disk drive when the console is to be transported This prevents damage to the drive mechanism Do not use spare audio lines for DMX cable If so th...

Страница 21: ... Out Two Desk Lamps VGA Inputs Keyboard AT type MIDI In Control channels 36 preset fader 360 24 preset fader 240 Data Protocol USITT DMX 512 1990 electrically conforms to RS485A Memory capacity 2Mbytes Disk Drive IBM format DOS 3 0 and above 1 44MB high density Desk Lamps 12 volt 5 watt x 2 maximum output 10W total Construction All steel chassis with lexan polycarbonate covered control surface Dim...

Страница 22: ...tion of a digital control signal Converter DIP Dual In line Package A device package format with 2 parallel rows of pins EL Electroluminescent A type of backlight that uses high voltage EPROM Erasable Programmable Read Only Memory A type of memory that is not intended to be re programmed in circuit FLASH Flash RAM A type of memory very much like EPROM but which is designed to be re programmed in s...

Страница 23: ...of time dependant upon the required output power RAM Random Access Memory Memory in which the data contained within can be accessed in any order The term RAM generally refers to memory that can be read and written to by the system ROM Read Only Memory Memory that cannot be changed by the system SMD Surface Mount Device A miniaturised leadless component mounted on the upper or lower surface of a ci...

Страница 24: ...Appendix A History of Modifications A 1 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Appendix A History of Modifications Serial Number Modification ...

Страница 25: ... MANUAL Appendix B Connector Pinouts Front Panel Card Bus Connector View from component side Palette Assign Master Cards FDD Power Connector Main Power Connector CONN8 D0 GND D3 D4 GND D7 R W 5 MUX 12 5V GND GND NC GND D1 D2 GND D5 D6 5 ALE DS 12 5V GND 12V GND 5V 12V GND DIM ...

Страница 26: ...HG HDSEL RDATA WRTPRT TRK0 WGATE WDATA STEP DIR MTR1 DS0 DS1 MTR0 INDEX DRATE1 NC DENSEL GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND GND DMX1 DMX1 GND DMX2 DMX2 GND ACK 12v A2 A3 GND A6 A7 GND A10 A11 5 A14 A15 GND A18 IO GND R W D7 GND D4 D3 GND D0 INT A0 A1 12V A4 A5 GND A8 A9 GND A12 A13 5 A16 A17 GND NC RESET GND D6 D5 GND D2 D1 GND ...

Страница 27: ...ECTIONS PIN No FUNCTION 1 NC 2 GND 3 V DESK LAMP CONNECTOR MIDI CONNECTIONS PIN FUNCTION No IN OUT THRU 1 NC NC NC 2 NC SHIELD SHIELD 3 NC NC NC 4 IN OUT OUT 5 IN OUT OUT MIDI CONNECTOR KEYBOARD CONNECTIONS PIN No FUNCTION 1 KCLK 2 KDATA 3 NC 4 GND 5 5V KEYBOARD CONNECTOR 1 3 3 3 2 2 5 5 2 4 1 4 1 ...

Страница 28: ...L MANUAL DMX CONNECTIONS PIN No FUNCTION 1 SHIELD 2 SIGNAL 3 SIGNAL 4 NC 5 NC DMX CONNECTOR VGA CONNECTIONS PIN No FUNCTION 1 RED 2 GREEN 3 BLUE 4 NC 5 NC 6 RED RETURN 7 GREEN RETURN 8 BLUE RETURN 9 NC 10 GND 11 NC 12 NC 13 HSYNC 14 VSYNC 15 NC VGA CONNECTOR 5 3 4 1 11 6 2 1 ...

Страница 29: ...60mm Alps ZRS0200 Fader knob black white line ZZK0400 Fader knob black blue line ZZK0450 Fader knob black green line ZZK0460 Fader knob black red line ZZK0470 Fader knob black grey line ZZK0480 Encoder HRPG ZRP0450 Encoder knob ZZK1210 Switch Schadow SERU ZSW0450 Switchcap SRKL Schadow ZSC0050 Switch Cherry MX1A A1NW ZSW1500 Switchcap Cherry no LED window ZSC0500 Switchcap Cherry with LED window Z...

Страница 30: ...Appendix C Spare Parts C 2 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Assign card complete YPC175 Master card complete YPC176 CPU card complete YPC174 ...

Страница 31: ...X2 output 4 5 FromMIDIoutput R6 220R R7 220R VCC 5 4 To MIDIInput VCC 5 4 FromKeyboard Input C1 100nF Appendix D DMX to MIDI adaptor A DMX to MIDI adaptor cable is required to run some of the Auxiliary tests contained in the Boot ROM The adaptor should be wired as shown DMX pin MIDI pin Detail 3 5 connect with 220R 0 25W 5 resistor 2 4 direct connection 1 2 direct connection Appendix E 2 x DMX MID...

Страница 32: ...Circuit Diagrams and Overlays F 1 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL Appendix F Circuit diagrams ...

Страница 33: ...Circuit Diagrams and Overlays F 2 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4CPU1 Circuit diagrams ...

Страница 34: ...DIR 1 IC29 74HC245 R14 10K R30 47K L3 LED RED R7 1K VCC OC 1 CLK 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q 17 4Q 16 5Q 15 6Q 14 7Q 13 8Q 12 IC30 74HC574 VCC R31 10R R32 4M7 VCC X1 32 768KHz R34 470K R8 1K C25 10nF R33 4M7 C26 22pF D0 5 D1 6 D2 7 D3 8 D4 9 D5 10 D6 12 D7 14 GND 15 CS 16 AS 17 DS 21 STBY 20 R W 19 RESET 22 MOT 2 SQW 27 PS 26 CLKOUT 25 CLKFS 24 OSC1 3 OSC2 4 IRQ 23 Vd...

Страница 35: ...4 5 6 7 8 IC51 75176 VCC VCC VCC VCC R41 220R R42 220R R112 220R R113 220R VCC D2 BAV103 VCC R114 220R R115 220R R57 47R R60 10R R44 10K R45 10K C28 1uF C29 1uF B1 Bead B2 Bead B4 Bead B3 Bead VCC VCC PolySwitch FDD MIDI KEYBOARD DMX1 DMX2 In Thru Out D24 D25 D26 D27 D28 D29 D30 D31 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 D 0 31 A 0 31 RESET R W RSTDRV D24 D25 D26 D27 D28 D29 D30 D31 D24 D25 D26 D27 D28 D29...

Страница 36: ...49 MA3 150 MA2 151 MA1 152 MA0 153 AVDD4 154 MFILTR 155 AVSS4 156 MCLK 157 XTAL 158 OSC 159 VSS13 160 VDD5 107 IC65 GD5429 C36 10pF R67 150R R68 150R R69 150R C37 10pF C38 10pF C17 100nF C24 10uF C33 1uF C18 100nF R75 10R R76 10R Video 1 GND 2 Vcc 4 OUT 3 IC66 14 31818MHz MD16 MD17 MD18 MD19 MD20 MD21 MD22 MD23 MD24 MD25 MD26 MD27 MD28 MD29 MD30 MD31 MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MA8 MA0 MA1 MA2...

Страница 37: ...Circuit Diagrams and Overlays F 3 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4MAST3 Circuit diagrams ...

Страница 38: ... IC4 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC7 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC14 74HC245 C4 10uF R14 100K VCC VCC VCC VCC R38 10K R39 10K R40 10K R41 10K R42 10K R44 100K R45 100K R46 100K R47 100K R48 100K R49 100K C41 10nF C43 10nF C45 10nF R43 10K OC...

Страница 39: ...herry R63 100K S13A Cherry R64 100K S14A Cherry R65 100K S15A Cherry R86 100K S16A Cherry R87 100K S17A Cherry R88 100K S18A Cherry R89 100K S19A Cherry R90 100K S20A Cherry R91 100K S21A Cherry R92 100K S22A Cherry R93 100K S23A Cherry R94 100K S24A Cherry R95 100K S25A Cherry R96 100K S26A Cherry R97 100K S27A Cherry R98 100K S28A Cherry R99 100K S29A Cherry R100 100K S30A Cherry R101 100K S31A ...

Страница 40: ...Circuit Diagrams and Overlays F 4 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4ASN3 Circuit diagrams ...

Страница 41: ...0820 VCC VCC A 1 B 2 C 3 E1 4 E2 5 E3 6 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 IC12 74HC138 OC 1 C 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q 17 4Q 16 5Q 15 6Q 14 7Q 13 8Q 12 IC13 74HC573 VCC VCC C23 10uF R23 100k C24 10uF VCC S T 19 ML2261 LED0 LED1 SW3 SW2 100 300VAC TO BACKLIGHT 5 SELECT CARD DATA BUS CONTRAST GND ALEL R W DS D1 D7 D6 D5 D4 D3 D2 D0 ALEH 12 5 12 1 2 3 4 8 ...

Страница 42: ...00nF VCC C13 100nF VCC C14 100nF C15 100nF FADER1 10K C16 100nF FADER2 10K C17 100nF FADER3 10K C18 100nF FADER4 10K C19 100nF FADER5 10K C20 100nF FADER6 10K C21 100nF FADER7 10K C22 100nF FADER8 10K F 1 8 FADTOP FADGND L 1 8 LL 1 8 R4 1K R5 1K S1A SERU S1B SERU1 R6 1K R7 1K S2A SERU S2B SERU1 R8 1K R9 1K S3A SERU S3B SERU1 R10 1K R11 1K S4A SERU S4B SERU1 R12 1K R13 1K S5A SERU S5B SERU1 R14 1K ...

Страница 43: ...Circuit Diagrams and Overlays F 5 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4PRE3 Circuit diagrams ...

Страница 44: ...R 1 IC10 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC11 74HC245 A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 IC12 74HC245 A 1 B 2 C 3 E1 4 E2 5 E3 6 Y0 15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 IC13 74HC138 VCC VCC OC 1 C 11 1D 2 2D 3 3D 4 4D 5 5D 6 6D 7 7D 8 8D 9 1Q 19 2Q 18 3Q ...

Страница 45: ...2 3 2 1 4 11 IC17A TL074 R52 22k C50 10nF R64 4k7 S6B 3mm RED 12 13 14 IC17D TL074 R53 22k C51 10nF R65 4k7 S7B 3mm RED 10 9 8 IC17C TL074 R54 22k C52 10nF R66 4k7 S8B 3mm RED 5 6 7 IC17B TL074 R55 22k C53 10nF R67 4k7 S9B 3mm RED 12 12 3 2 1 4 11 IC18A TL074 R56 22k C54 10nF R68 4k7 S10B 3mm RED 12 13 14 IC18D TL074 R57 22k C55 10nF R69 4k7 S11B 3mm RED 10 9 8 IC18C TL074 R58 22k C56 10nF R70 4k7...

Страница 46: ...Circuit Diagrams and Overlays F 6 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL EV4PAL3 Circuit diagrams ...

Страница 47: ... 5Q 15 6Q 14 7Q 13 8Q 12 IC13 74HC573 5 10 15 20 3 8 13 18 4 9 14 19 1 6 11 16 2 7 12 17 20 15 10 5 19 14 9 4 18 13 8 3 17 12 7 2 16 11 6 1 9D 9E 9F 9F 9E 9D GND 1 D0 2 D1 3 GND 4 D2 5 D3 6 GND 7 D4 8 D5 9 GND 10 D6 11 D7 12 VCC 13 RW 14 ALEH 15 VCC 16 DS 17 ALEL 18 12 19 12 20 CONN1 20WAY LATCH HEADER DD0 DD1 DD2 DD3 DD4 DD5 DD6 DD7 12 12 VCC S1A R1 100K S2A R2 100K S3A R3 100K S4A R4 100K S5A R5...

Страница 48: ...Circuit Diagrams and Overlays F 7 Revision 1 07 July 1999 Event 4 TECHNICAL MANUAL BKLTSML2 Circuit diagrams ...

Страница 49: ...2 9582 0909 1 0 9 Jul 1999 H LAB EVENT4 CIRCUIT Bkltsml2 sch Title Size Number Date File Revision Sheet of A4 Small Backlight driver bkltsml0 Drawn By R1 100R R2 100R C1 10uF 12 C2 10uF 12 R3 10k 12 R4 220R Q1 BCX17 Q2 BCX19 R5 10k 12 100 300VAC TO BACKLIGHT INV1 Seiko 5C T1p U1p Output 1 Output 2 ...

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