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12

HD 990

Repeat Play Operation

Repeat Play

the hd 990’s programming system enables you to repeat either a single track, the entire 

disc (respectively all programmed tracks) or a specially programmed passage that you 

select.

Repeat One Track

to  repeat  the  track  in  play,  press  the  repeat  button

f

once.  the  repeat  and  1

 

indicators will light and the track will continue to play over and over again continuously. If 

the track is changed by pressing the skip buttons 

7 8 h

 while the repeat function 

is in use, the newly selected track will be played normally. to stop the repeat play, press 

the stop button 

6 k

 or press the repeat button 

f

 until the repeat indicator goes 

out.

Repeat All Tracks

to repeat all of the tracks on a disc during play mode, press the repeat button 

f

 until 

the repeat and all indicators light up. When you see these indicators, the entire disc or all 

programmed tracks will play through to the end, and then start again from the beginning.  

the disc will play continually until the stop button 

6 k

 is pressed.

Repeat A-B

the cd player may be programmed to repeat any section within a track, or a complete 

passage or program that includes material in a series of tracks.  

to program the unit for a-B play, first locate the point on the disc where you wish to 

begin the repeated section. at that point, press the repeat a-B button 

g

. the repeat 

indicators  will  light  in  the  Information  display  and  an a-

 

indicator  to  show  that  the 

program process has started. let the disc continue to play or press the search

button 

7 8 h

 or skip

 

fl· 

button 

7 8 h

 on the front or remote until 

you have reached the end of the section to be repeated. When the end point is reached, 

press the repeat a-B button 

g

 again. note that the repeat and a-B indicators will 

now be illuminated.

once  the  repeat  a-B  button 

g

  is  pressed  for  the  second  time  to  complete  the 

programming,  the  cd  player  will  automatically  go  to  the  beginning  of  the  selected 

passage and continue to play the section over and over.

to resume normal play press the repeat a-B button 

g

 again. the repeat and a-B

 

indicators will go out, and the rest of the disc will play normally.

Important  Note

:  tracks  programmed  as  described  in  “programmed  play”  on  page 

11 can be repeated too. When you press repeat 

f

 once after a program is created 

(the program indicator must be lit, otherwise press program 

d

) and the program is 

played, the repeat 1

 

indicator will light and the track currently playing will be repeated 

continuously. If repeat is pressed twice, repeat all

 

will be displayed, all programmed 

tracks will be played subsequently and the sequence will be repeated continuously until 

stop 

6 k

 is pressed.

HD 990 

 

 

 

 

 

 

 

 

 

 

 

     

harman/kardon

  

 

Summary of Contents for HD 990

Page 1: ... FRONT PANEL CONTROLS 8 REAR PANEL CONNECTIONS 9 REMOTE CONTROL 10 OPERATION 11 BASIC TROUBLESHOOTING GUIDE 15 EXPLODED VIEW 120v 16 BLOCK DIAGRAM 17 ELECTRICAL PARTS LIST 120v 18 PCB DRAWINGS 24 SEMICONDUCTOR PINOUTS 29 SCHEMATICS 49 WIRING DIAGRAM 61 harman kardon Inc 8500 Balboa Blvd Released 2010 Northridge CA 91329 Rev0 10 2010 Discontinued XXXX ...

Page 2: ...beams may damage the eyes Absolutely never permit laser beams to enter the eyes Also NEVER switch ON the power to the laser output part lens etc of the pick up if it is damaged 5 Cleaning the lens surface If there is dust on the lens surface the dust should be cleaned away by using an air bush such as used for camera lens The lens is held by a delicate spring When cleaning the lens surface therefo...

Page 3: ...component part first disconnect the power supply lead wire from the unit 2 All equipment measuring instruments and tools must be grounded 3 The workbench should be covered with a conductive sheet and grounded When removing the laser pick up from its conductive bag do not place the pick up on the bag This is because there is the possibility of damage by static electricity 4 To prevent AC leakage th...

Page 4: ...e only a grounded tip soldering iron to solder or unsolder ESD devices 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static can generate electrical charges sufficient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a replacement ESD device from it...

Page 5: ...Total Harmonic Distortion THD 0 0006 1kHz Dynamic Range 120dB Signal to Noise Ratio 116dB Channel Separation 115dB Line Output Level 2 0V RMS unbalanced 4 0V RMS balanced General Power Requirement 100V 240V 50Hz 60Hz Power Consumption 20 watts on 2 watts standby Dimensions width x height x depth 17 5 16 x 2 1 2 x 13 1 16 440mm x 64mm x 332mm Depth measurement includes knobs buttons and connection ...

Page 6: ...THD n 24 bits balanced 20 20kHz 0 0008 unweighted Line Output 0 dB fs CH Separation 100 dB Line Output L R R L 1kHz Channel Balance 0 2dB Line Output IMD 0 0015 Line Output SMPTE 10K 11K 80 KHz BW L to R Phase Shift 0 7 deg Line Output 10 20kHz Linearity 0 dB 0 1 dB Line Output 1kHz 0dBfs Low Linearity Level 0 5 dB Line Output 1 kHz 110 dBfs 24 bits Output Level 2Vrms 5 Line Output 1kHz 0dB 10 koh...

Page 7: ...HD 990 harman kardon PACKAGING ...

Page 8: ... Skip Search Previous Press this button to move backward through the music tracks on a CD disc Keep the button pressed to search backward at one of the available speeds 8 Skip Search Next Press to move forward through the music tracks on a CD Keep the button pressed to search forward at one of the available speeds 9 Display Dimmer Press this button to reduce the brightness of the Information Displ...

Page 9: ...xternal control systems 3 Remote Control Output Connect this jack to the input of another compatible Harman Kardon remote controlled device to have the remote sensor on the CD player provide signals to other products 4 AC Power Cord Connect this plug to an AC outlet If the outlet is switch controlled make certain that the switch is in the On position 5 Coaxial and Optical Digital Inputs Connect th...

Page 10: ...o the next track fl or to move back to the previous track fi see page 10 i Search Buttons Press one of these buttons to search forward or backward through a disc to locate a particular portion of the selection being played Holding the buttons pressed for some seconds will increase the search speed see page 10 j Play Pause Button Press this button to start the playback of a CD If the CD drawer is op...

Page 11: ...press the Play button 4 j A play symbol will appear in the Main Information Display 1 as well as indication of track number and time elapsed To play all of the tracks in random order press the Random button C The Random indicator will light when that mode is in use Random can be activated also while a track is playing When Random is activated while programmed play is in use see page 11 all program...

Page 12: ...he Reverse Skip button fi 7 h once will move you back to the start of the actual track as long as 3 seconds of the track have elapsed and pressing it multiple times will move you back one track at a time Holding any Skip button pressed enables scanning quickly through all tracks on the disc as described previously The Skip buttons may be used when the CD player is either playing or stopped If the u...

Page 13: ...starts blinking this will take 1 second the appropriate program step number shown at the left side is not programmed yet now you can change the track number with the Skip buttons 7 8 h or the Numeric buttons c as described above and add it to the program list by pressing the Program button d Pressing the Stop button 6 k twice will return to normal mode and the Program indicator will go out but the...

Page 14: ...e point on the disc where you wish to begin the repeated section At that point press the Repeat A B button g The Repeat indicators will light in the Information Display and an A indicator to show that the program process has started Let the disc continue to play or press the Search button 7 8 h or Skip fl button 7 8 h on the front or remote until you have reached the end of the section to be repea...

Page 15: ... no sound is heard Poor connections Wrong source connections Make certain that connections are secure and made to the correct e g CD input Select CD source on receiver or preamp Sound skips or stutters during play Disc may be damaged Surface vibrations Try another disc Isolate the unit from vibration by placing it on a firm surface or move it further away from the speakers Sound is continually dis...

Page 16: ...HD 990 harman kardon ...

Page 17: ... DACs 2 AD1955 Transparent latch OUT L OUT R DATA BCLK LRCLK MCLK Analog Stage BLCK I2S BUS DATA1 LRCLK SPORT0 RX DIGITAL OUT Analog Stage XLR OUTPUT Analog Stage Analog Stage XLR OUTPUT FRONT PANEL BOARD Micro Controler EM78P156ELM Key Pad VFD LC75711NE Driver Remote IR IR In IR Out IR In Out Block DATA2 NET OUTTRAY INTRAY 17mA NET A 5V 100mA NET 5VSTBY 100mA NET A 14 5V A 14 5V 100mA NET D 5V M ...

Page 18: ...182F Resistor chip 0805 11 8KΩ 1 2 R255 R257 0157R3E223J Resistor chip 0805 22KΩ 5 2 R182 R192 0157R3E333J Resistor chip 0805 33KΩ 5 2 R250 R251 0157R3E473J Resistor chip 0805 47KΩ 5 2 R196 R198 0157R3E104J Resistor chip 0805 100KΩ 5 4 R151 R169 R172 R174 0157R3E105J Resistor chip 0805 1MΩ 5 2 R177 R188 0157R4E560J Resistor chip 1206 56Ω 5 4 R10 R31 R51 R72 0157R4E101F Resistor chip 1206 100Ω 1 4 ...

Page 19: ...5 CE26 CE27 CE28 CE29 CE30 0134CLDE220U10VD Capacitor AL electrolytic CD110 220UF 10V 5 12 25 CE33 CE41 CE43 CE46 CE49 CE20 CE31 CE32 CE34 CE35 CE36 CE37 CE38 CE39 CE40 CE42 CE44 CE45 CE57 CE58 CE59 CE60 CE61 CE62 CE52 0134CLDEH470U35VG Capacitor AL electrolytic 105 M CD288H 470UF 35V 10 20 2 CE47 CE51 0100CDDLE33263V Metallized Polyester Film Capacitor 332 63V 4 C183 C184 C185 C186 0100CDDLE10463...

Page 20: ...3LZESC100 Bead chip 1206 100Ω SMD 14 FB1 FB2 FB3 FB4 FB5 FB6 FB7 FB8 FB9 FB10 FB11 FB12 FB13 FB14 0100ZJBHQE008 Relay HongFa HFD27 005 S 555 DIP 2 K2 K1 0100JZE33868 Quartyz Crystal Unit 33 8688MHZ 49S 20P 1 Y2 0100JZE225792A Quartyz Crystal Unit 22 5792MHz 49S 10PF 10PPM DIP 1 Y1 0140CONDCZE121 Jack IR in out jack SCJ351P00XS0B00 BLACK In line Package 1 JP7 0140CONDCZE046 Jack Audio output jack A...

Page 21: ...CED103 FIXED CARBON FILM RT1 4W 10KΩ 1 R15 0157RCED473 FIXED CARBON FILM RT1 4W 47KΩ 1 R5 0157RCEF683 FIXED CARBON FILM RT1W 68KΩ 5 1 R2 0157RCEF364 FIXED CARBON FILM RT1W 360KΩ 1 R3 0157RCED105 FIXED CARBON FILM RT1 4W 1MΩ 1 R1 Capacitors 0100CDGYE104275V High voltage metallized polyester film 104 275V X2 lead pitch 15mm 1 CX1 0100CDGYE471400V High voltage metallized polyester film 471 400V Y1 le...

Page 22: ... 0100SJHD980E010 plastic part HD980 Power indicator lampshade 1 HD980 RE08 0100SJSKE008 plastic part 1000A IR receiver support 5 5mm 1 0100FZQTE409 PC piece HD980 H05 1 Between Lens and Front panel 0100WJTJHD990E001 Metals Part HD990 Chassis 1 HD990 PT01 0100WJTJHD990E004 Metals Part HD990 Rear panel For US Version 1 HD990 PT02 0100WJTJHD980E003 Metals Part HD980 Top cover 1 HD980 PT03 0100WJTJHD9...

Page 23: ...80mmA 1 Connect Main board and VFD board 0148BPX1E045 flat cable 0 5 24P 180mmA 1 Connect Loarder and Main board 0115JXEDV34850 Loader DV34 850 1 SF HD850G DVD M06B 0140CONDCZE178 Power Jack WS 044 0 1 0100SBE162 Metal logo HD990 13 9 4 75mm with single side glue 1 HD990 H01 sticked on Lens 0100SBE128 Metal logo 52 5 2mm with single side glue 1 HD980 H03 sticked on Aluminum veneer 0100SBE129 Metal...

Page 24: ...HD 990 harman kardon ...

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Page 26: ...HD 990 harman kardon ...

Page 27: ...HD 990 harman kardon ...

Page 28: ...HD 990 harman kardon ...

Page 29: ...ADSP BF532SBSTZ400 LQFP176 HD 990 harman kardon IC ADI Blackin DSP ...

Page 30: ...VT7208 LQFP 216 HD 990 harman kardon IC Via Servo chip ...

Page 31: ...KH29LV040CQC 70G PLCC 32 A290011TL 70 PLCC 32 HD 990 harman kardon IC KH Flash Memory IC AMIC Flash memory ...

Page 32: ...HY57V641620ETP 7 TSSOP 54 M11B416256A SOJ 40 HD 990 harman kardon IC Hynix SDRAM IC EliteMT DRAM ...

Page 33: ...BA5888FP HSOP 28 AD1955 SSOP 28 HD 990 harman kardon IC Rohm Actuator driver IC ADI DAC ...

Page 34: ...SN74HCT245PWR TSSOP 20 74HCT14D SOIC14 HD 990 harman kardon IC TI TTL input buffer IC Philips Hex inverting Schmitt trigger ...

Page 35: ...SN74LVC125ADR SOIC8 SN74LVC244APWR TSSOP20 HD 990 harman kardon IC TI quadruple Bus Buffer Gate IC TI Octal Buffers Drives ...

Page 36: ...SN74LV74ADR SOIC14 SN65LVDS2DBVR DBV5 HD 990 harman kardon IC TI D Type Trigger IC TI Differential Receiver ...

Page 37: ...CS8416 CZZ TSSOP28 ICS83905AGT TSSOP16 HD 990 harman kardon IC Cirrus Logic Digital Audio Interface Receiver IC ICS Crystal Interface TO LVCMOS LVTTL Fanout Buffer ...

Page 38: ...TL072CD SO8 AD8663ARZ SOIC8 HD 990 harman kardon Dual Op Amp IC ADI op amp ...

Page 39: ...OPA2134UA SOIC8 OP275GS SO8 HD 990 harman kardon IC TI op amp IC ADI op amp ...

Page 40: ...LM393 SOP8 AZ1117 ADJ 3 3V 5V SOT 223 HD 990 harman kardon IC ST Comparator IC AAC LDO ...

Page 41: ...LM9022 SOP8 EM78P156ELM G SOIC18 HD 990 harman kardon IC NS Vacuum Fluorescent Display Filament Driver IC ELAN MCU ...

Page 42: ...TPS73033DBVR DVB5 AAT3522 SOT 23 HD 990 harman kardon IC TI LDO IC AAT Reset monitor ...

Page 43: ...L7805 L7812 TO 220 L7912 TO 220 HD 990 harman kardon Positive Regulator Negative Regulator ...

Page 44: ...BA33BCO TO 220 LM317T TO 220 HD 990 harman kardon IC ROHM Dropout Voltage Regulator IC ST Adj Voltage Regulator ...

Page 45: ...KA5M02659R DIP8 PC817 DIP4 HD 990 harman kardon IC FAIRCHILD FPS IC Sharp Photoelectric Coupler ...

Page 46: ...AZ431AZ ATRE1 TO 92 LC75711NE QFP64E HD 990 harman kardon IC AAC Adjustable Shunt Regulator IC SANYO VFD Driver ...

Page 47: ...processor HS0038B is the standard IR remote control receiver series supporting all major transmission codes 14 500 Features D Photo detector and preamplifier in one package D Internal filter for PCM frequency D TTL and CMOS compatibility D Output active low D Improved shielding against electrical field disturbance D Suitable burst length 10 cycles burst D Low power consumption D High immunity agai...

Page 48: ...HD 990 harman kardon ...

Page 49: ... D 3 3V D11 FR104 EC12 100u 25V D10 FR104 EC9 220u 25V EC11 100u 25V EC10 220u 25V L5 20uH L4 20uH A 14 5V 230mA A 14 5V 50mA C11 104 25V AGND AGND 14 5V 50mA 14 5V 230mA D 5V D 5V DGND MGND DGND D12 21DQ10 EC14 220u 25V EC15 220u 25V L6 20uH EC16 220u 10V A 5V 200mA 1A Max C12 104 25V ADJ 1 Vout 2 Vin 3 IC5 LM317 7 5V 200mA R13 220R R14 680R SC1 MCR100 6 R15 10K R16 100R Q2 9014 D14 1N4148 EC17 4...

Page 50: ...7 4 R227 3K D15 30BQ040 C105 100nF C114 100nF CE42 100uF 10V 1 2 R226 2K7 R219 470R C107 100nF C212 100nF C71 100nF R220 470R U43 AD1580 3 2 1 FB9 100R CE45 100uF 10V 1 2 CE51 470uF 35V low ESR 1 2 CE39 100uF 10V 1 2 VIA3 VIA_PAD4 0 1 2 3 4 5 6 7 8 9 CE38 100uF 10V 1 2 U44 AD1580 3 2 1 U29 AZ1117H 3 3 2 3 1 4 OUT IN ADJ TAB R221 10K CE33 220uF 10V 1 2 FB8 100R C110 100nF FB3 100R C108 100nF C213 1...

Page 51: ... VCCQ VSSQ VSSQ VSSQ VSSQ C191 100nF OE 1 U12D 74LCX125MTR 9 8 14 7 10 R133 10K R137 47R TP18 C74 100nF C188 100nF C208 100nF R125 47R K2C RELAY JRC 19F 1 16 RN2 4 33R 1 8 2 7 3 6 4 5 C190 100nF MQ1 BSS123 1 2 3 U23 KH29LV040CQC 70G 16 22 24 1 32 13 14 15 12 11 10 9 8 7 6 5 27 26 23 25 4 28 29 17 18 19 20 21 3 2 30 31 GND CE OE A18 VCC I O0 I O1 I O2 A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A...

Page 52: ...DSD_PHASE LRCLK EF_WCLK BCLK EF_BCLK SDATA EF_LDATA MCK CLATCH CCLK CDATA DSD_SCLK DSD_LDATA EF_RDATA RST ZERO_R MUTE AGND FILTB IREF FILTR R13 330R R20 47K Q16 2SC2406 3 2 1 C1 100nF R19 330R C8 100nF R4 680R R31 56R B C E Q6 2SA1035 2 3 1 CE3 47uF 25V 1 2 B C E Q2 2SA1035 2 3 1 R7 330R FB12 100R B C E Q12 2SA1035 2 3 1 C167 100nF Q8 2SC2406 3 2 1 C6 100nF C14 100nF B C E Q10 2SA1035 2 3 1 CE60 1...

Page 53: ...17 11 12 21 8 9 2 3 4 27 25 26 24 6 7 5 23 20 22 19 16 14 13 DVDD AVDD AGND DGND OUT L OUT L OUT R OUT R ZERO_L DSD_RDATA DSD_PHASE LRCLK EF_WCLK BCLK EF_BCLK SDATA EF_LDATA MCK CLATCH CCLK CDATA DSD_SCLK DSD_LDATA EF_RDATA RST ZERO_R MUTE AGND FILTB IREF FILTR R82 47K CE12 47uF 25V 1 2 C35 100nF Q29 2SC2406 3 2 1 R43 330R R77 2K2 C177 2 2nF CE8 47uF 25V 1 2 CE11 47uF 25V 1 2 R57 680R R53 510R Q27...

Page 54: ...4 10K C218 NA C45 100nF C57 22nF R271 NA CE63 47uF 25V 1 2 R265 150R U39C 74HCT14D 5 6 CE18 47uF 25V 1 2 GND JP6 HRS Link 1 2 3 4 5 6 7 8 9 10 U17 TPS73033DBVR 5 3 4 1 2 OUT EN NR IN GND C68 100nF C64 NA R94 100R R110 47R R269 NA R109 270R L2 22uH R102 47R U39D 74HCT14D 8 9 C61 4 7pF R93 3K3 C51 100nF L1 22uH JP7 SCJ35PP00XS0B00 1 2 3 6 4 5 R90 47R R96 100R R118 4K7 U14 ICS83905 16 1 15 2 4 6 8 10...

Page 55: ...10 8 6 4 2 CN1 CON14_1 25MM_DIP_2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 8 9 10 11 12 13 14 CE23 47uF 50V 1 2 R150 100R D6 LL4148 1 2 CE22 47uF 50V 1 2 R164 100R D4 LL4148 1 2 D3 LL4148 1 2 CE25 47uF 50V 1 2 R155 10K CE24 47uF 50V 1 2 R151 100K D10 LL4148 1 2 R160 15K R166 390R R163 100R U25 LM9022 1 2 6 3 4 7 5 8 SN SYS VDD IN IN GND VO1 VO2 CE19 47uF 50V 1 2 C82 10nF D5 LL4148 1 2 R165 2...

Page 56: ...z F TR CD_DVD B VR_CD E VR_CD C VR_DVD TR F F D A CD_DVD VR_DVD GND GND RF GIO6 LDOCD LDODVD MDI F E A D RF C B TR TR F F VRA VRA A5V A5V A5V A5V Q35 2SD1664 1 3 2 RF01 R172 100K CN7 CON2_2 0MM_DIP 2 1 G S D MQ3 2SK3018 1 2 3 CN2 CON24_0 5MM 10 9 8 7 6 5 4 3 2 1 11 13 12 15 14 16 20 19 18 17 24 23 22 21 25 26 TP27 TP25 R171 10K R169 100K R168 10K R170 0R R173 10K R167 0R R174 100K D13 LL4148 1 2 G...

Page 57: ...50 1 3 2 C102 NA C100 10nF R188 1M R180 240R R185 10K R201 0R R207 1R C95 47nF C99 100nF C90 390pF FMSO1 TOSO1 R195 2K2 C88 100nF B C E Q37 8550 2 1 3 C94 100pF D22 SS14 1 2 R203 8K2 R204 1R R178 1K5 C87 100nF U27B LM393 5 6 7 8 4 CN3 CON5_2 0MM_DIP 1 2 3 4 5 R205 1R R183 100R U27A LM393 3 2 1 8 4 R199 2K2 C91 100nF R181 240R C89 390pF C98 680pF R202 5K1 FOFO1 C86 100nF R194 0R R182 22K C101 10nF ...

Page 58: ...124 146 122 120 118 116 115 114 136 121 134 113 157 158 159 160 161 162 163 164 165 166 167 170 173 172 171 174 175 177 176 178 168 169 182 183 181 184 185 187 186 188 189 190 191 192 193 195 194 196 197 198 199 207 200 201 204 206 205 1 2 3 4 37 5 6 7 8 9 180 179 10 11 12 13 14 15 16 17 19 18 22 24 23 20 21 28 25 26 27 32 29 31 34 35 39 40 38 41 42 44 45 43 47 48 49 50 51 52 46 53 54 208 71 209 2...

Page 59: ... DGND DGND DGND DGND DGND 5VON CE402 100uF 10V 1 2 C402 22pF CN403 1 2 3 4 5 6 R401 15K K405 Prev 1 3 2 4 K403 Pause 1 3 2 4 C406 100nF R411 4 7K R408 4 7K K402 Play 1 3 2 4 R415 0R K406 Next 1 3 2 4 C401 2 2uF Y401 4 000MHZ 1 2 3 IR G VCC IR401 HS0038B 1 2 3 K407 Display 1 3 2 4 LED401 1 2 3 C403 22pF R412 470R CN404 1 2 3 1 2 3 C405 100nF R410 4 7K R402 4 7K K401 Standby 1 3 2 4 CE401 100uF 10V ...

Page 60: ...4148 1 2 K408 Open Close 1 3 2 4 C415 47nF CN402 CON6_1 25MM_DIP_B 1 2 3 4 5 6 R415 10K LC75711NE U402 LC75711NE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 AM1 AM2 AM3 AM4 AM5 AM6 AM7 AM8 AM9 AM10 AM11 AM12 AM13 AM14 AM15 AM16 AM17 AM18 AM19 AM20 AM21 AM22 AM2...

Page 61: ...OARD 5576C CN1 CN2 24 PIN CONNECTOR FOR SF HD850G CN2 CN5 CN4 CN3 CN1 LOAD LOAD TRAYOUT GND TRAYIN SPIN SPIN LIMIT GND SLED SLED 1 2 5 3 4 6 GND RB5 RA1 IR GND REMOTE_IR HD990 WIRING DIAGRAM NA GND AC1 AC2 29V GND REMOTE_IR VFD_STB DATA SDA D5V GND CLOCK SCL GND IR REMOTE_IR GND IR RA1 RB5 GND UPSIDE OF FRONT PANEL BOARD UNDERSIDE OF FRONT PANEL BOARD GND NA IR GND CLOCK SCL GND D5V DATA SDA VFD_S...

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