9914V TAPE UNIT

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7.4.4 SettingThe Servo Control performance may be checked by running diagnostic program 49, thereare no adjustments In the servo control loops.7.4.5 Removal and ReplacementNote: the Servo Control board is ESD sensitive, see Section 7.1.2 for handling precautions.i) Set power off (depending on the supply type and connection method) either:- with an ac supply, unplug the mains lead at the rear of the 9914V, or- with a spade-connected dc supply, unplug the connectors at the rear of the 9914V, or- with a plug-and-socket dc supply, unplug the 3-pin connector at the rear of the 9914V.ii) Release the deck captive screw and, with the loading door closed, lower the deck castingto the horizontal position.iii) Release connectors as follows:30-way (P4) to the motherboard;5-way (P3) to the cooling fan;5-way (P1) to the TU motor;5-way (P2) to the SU motor;7-way (pa) to the AC Power Supply board;14-way (P7) to the AC Power Supply board;3a-way (P5) to the In-Chute sensor board;50-way (P6) to the operator panel.iv) Release the Servo Control board by lifting it off the 4 locating supports which secure it tothe enclosure.When replacing the Servo Control board, reverse the above removal procedure until all theconnectors are in place, then power up and check that the display does not indicate a faultcondition (Section 3 details the possible display indications).7.5 Operator's PanelThe buttons and indicators are laid out as shown in Figure 7.5.1.ION LINEII DIAG IF26E.,01IWTENII EOT IEJLD/ONL RWO/UNL RESET DENSITYtens units run/stop enterFIGURE 7.5.1OPERATOR PANEL BUnONS AND INDICATORS7 - 12 9914 V Servicing Manual 95 125456 (Draft Issue D)
7.5.1 FunctionThe operator's panel includes a switch membrane, mounted on the lower front face of the9914V, and a set of displays. The switch membrane includes five switches (usuallyreferred to as . buttons ') used by the operator to control the 9914 V. The legends consist ofthe four back-lit indicators which show permanent status to the operator. The 8-characterdisplay (which shows temporary status messages to the operator) and the legend lightsources are mounted on the switch fascia pcb, the control and power for which is derivedfrom the Servo Control board.7.5.2 LocationThe switch fascia pcb is mounted behind the operator's panel, Iowan the right hand side(as illustrated in Section 8). It is connected to the Serve Centrel beard by a SO=way ribboncable, fixed at the operator panel end and plug-in at the Servo Control board end.7.5.3 CheckoutIn order for the operator's panel to function it must receive +5V from the Servo Controlboard, if the 8-character display is blank with power switched on, the Power Supply may befaulty, refer to Section 7.3.The 8-character display and the back-lit legends may be checked by running diagnosticprogram 72, which illuminates all parts of the display panel in tum.The control buttons can be checked out by invoking their functions and verifying theresponse (with a known good Servo Control board installed) a recommended procedure isto follow Table 7.5.3 in sequence.Function checked Action Correct responsePower-on sequence, Switch on, wait for DIAG legend flashes,DIAG legend a few seconds then display shows' TESTI NG 'Wait for' LOCATING'RESET button Press RESET twice Display shows' OK 'DIAG button Press DIAG button DIAG legend illuminates(display shows' Test 00 ')I tens ' & ' units' buttons Momentarily depress Display increments.each button, until once per depression, Test 72 ' is displayed, run/stop , button Press ' run/stop , once Display continuously scrolls the& 8-character display, quick brown fox' message,and illuminates each legend, enter' button Press I enter' once Display shows' Enter 72 'Suspend diagnostic Press ' run/stop 'ance Display reverts to ' Test 72 'Exit diagnostic mode Press DIAG once Display reverts to OKTABLE 7.5.3 OPERATOR PANEL BUTTONS CHECKOUTSee notes overleaf ...95 125456 (Draft Issue D) Sub-Assemblies 7 - 13
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9914V TAPE UNITSERVICING MANUALDocu
Page 3 and 4:
Bescheinigung des HerstellersHiermi
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INTERNAL CODE LICENSEPLEASE READ TH
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Table of ContentsSection 1 9914V Ov
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Section 3 Fault-Finding and Calibra
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7.2 MaIns Transformer and Switch ..
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7.17 Pertec Cache Interface Board .
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Illustrations of Parts8.2.1 TAPE PA
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1.9914V OverviewThis 9914V Servicin
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1.2.3 Access, Modularity, and Tools
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1.3 Short-Form SpecificationTape Ty
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1.4 StreamingTo maintain streaming,
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1.5 lor. Mains SystemsD€finition:
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c) Miscellaneous circuits:i) to acc
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!IOperator"s PanelI~Mlcroprocessor~
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) Drive CurrentsThe processor outpu
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) LocatingIn order to check the loc
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2.3 Data Control Board Description2
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Signal MODEa MODE1 MODE2 MODE3Meani
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2.4.2.3 Write Power ControlThis blo
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Under fixed gain conditions, the am
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tilE THRESI-'OLD .. . t ...........
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2.5.3.1 Control StrategyThere are f
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2.6 Pre-Amplifier DescriptionThis s
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SKI I! SK2CJ '---..;;.......,;----'
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2.8.3 SCSI InterfaceThe SCSI Contro
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3.Fault Finding3.1 Scope of Section
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Hub Sensor pcb-PLHS,ITachoI~PlAL II
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DisplayExplanationSuspect FRU* BOT
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Display Explanation Suspect FRUOKTh
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95 125456 (Draft Issue D) Fault Fin
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3.3.4 On-line IndicationsThe full l
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3.4 Fault-Finding Routines3.4.1 Int
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0lFaultl Possible causesI nvestigat
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Faultl Possible causes Investigatio
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o11Fault I Possible causes Investig
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I\.)I\.)Fault I Possible causesInve
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3.6 Manual Tape ThreadingSince the
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Re-calibration of the 98 i Li.\t ;;
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Configuration bytes 06 onwards are
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4.3 Configuration Byte 07 - Host In
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4.5 Configuration Byte 09 - Host In
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4.7 Configuration Byte 11 - Conditi
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4.9 - Configuration Byte 13 - Misce
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4.11 Configuration BytE.; '~g - Mis
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Option0102030405MeaningDNSDIS-1DNSD
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This page has no technical content4
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5.1.2 ',-ite CurrentFallaw the flow
Page 100 and 101: No. Function No. Function00 NULL PR
Page 102 and 103: Program 03NoteDescriptionILWD Line
Page 104 and 105: When run on-line, the programs expe
Page 106 and 107: Program 14DescriptionSet Block Leng
Page 108 and 109: Pro-:;r~UI 25Write, Backspace, Read
Page 110 and 111: Program 32 ~~;ce " ~IocksNotes - ;"
Page 112 and 113: i t 1 7 6 5 4 3 1 2 1 0I I I 1 I 1
Page 114 and 115: L should not be displayed with the
Page 116 and 117: EXIT Denotes the first exit point o
Page 118 and 119: Program 65Program 66DescriptionErro
Page 120 and 121: Prog"ram 69DescriptionError CodesIn
Page 122 and 123: Error Codes~: : AL f',l;:·)le cali
Page 124 and 125: Program 80Set Default NVR ValuesNot
Page 126 and 127: Program 98DescriptionError CodesCle
Page 128 and 129: 6.4 Status Byte F4When an on-line d
Page 130 and 131: 6.7 Status Byte F7Status byte F7 co
Page 132 and 133: · - -6.9 Status Byte F9Status byte
Page 134 and 135: 6.11 Status By'"_-; ~ i ~Status byt
Page 136 and 137: 6.16 Status Byte F16Bit Name Meanin
Page 138 and 139: it 7 bit 6bit 5 bit 4 bit 3 bit 2 b
Page 140 and 141: 6.18 Condensed Status BytesThe 9914
Page 142 and 143: .....(J)ClWRITE ERR LOGbit 7 bit 62
Page 144 and 145: 7.1.3 Electrical Servicing Equipmen
Page 146 and 147: 7.2 Mains Tra.~- ad SWitchThe mains
Page 148 and 149: 7.2.4.1 Wiring the AC Supply PlugWa
Page 152 and 153: Notes to Table 7.5.3:i) dual-functi
Page 154 and 155: ALLEN KEYE~ECTORSUTTONTOGGLEARf\iv)
Page 156 and 157: 7.8 Tape Path Assembly7.8.1 Functio
Page 158 and 159: 7.9.2 LocationThe tape cleaner is m
Page 160 and 161: 7.11 rension Arm Assembly7.11.1 Fun
Page 162 and 163: The 9914V Data Central boards use E
Page 164 and 165: vi) Disconnect the IDC connectors t
Page 166 and 167: No attempt should be made to discon
Page 168 and 169: 7.17.2 LocationThe PCI board is a p
Page 170 and 171: 8.1 Available Spares8.1.1 Major Spa
Page 172 and 173: 8.1.3 Subsidiary Spares Lisi:Parts
Page 174 and 175: \\-FIGURE 8.2.1TAPE PATH ASSEMBLY8-
Page 176 and 177: FIGURE 8.2.2 PARTS ABOVE THE TAPE P
Page 178 and 179: FIGURE 8.2.3(a) PARTS BELOW THE TAP
Page 180 and 181: FIGURE 8.2.3(b) PARTS BELOW THE TAP
Page 182 and 183: 02 _____lG(3FIGURE 8.2.4 SUPPLY HUB
Page 184 and 185: \2II\0FIGURE 8.2.5 COOLING FAN ASSE
Page 186 and 187: 00I~00
Page 188 and 189: --1LU---a--- 01FIGURE 8.2.7 ANALOGU
Page 190 and 191: FIGURE 8.2.8 DIGITAL DATA PATHS BOA
Page 192 and 193: FIGURE 8.2.9 DATA CONTROL BOARD8 -
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Page 196 and 197: l-ClI I",-...1\I,II1\O~\III\----FIG
Page 198 and 199: loll 'eOIl~~10-I
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FIGURE 8.2.13 OPERATOR PANEL AND SW
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o17--ljII 1011----~.....FIGURE 8.2.
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FIGURE 8.2.15 MAINS SWITCH8 - 36 99
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-----.\2~\\ ~1~IOFIGURE 8.3.1SCSI B
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16 ________15 Y! ! II I' I1 I' ,0\
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\0{1b'5 13 16FIGURE 8.3.3 DC POWER
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~-------~IFIGURE 8.4.1MAINS TRANSFO
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FIGURE 8.4.2 HUB SENSOR PCB8 - 46 9
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12II10-lWI--fl---OIFIGURE 8.4.3 AIR
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D14DFIGURE 8.4.4 AC FUSE KIT8 - 50
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o\ft~o·~)bJa:1FIGURE 8.4.5 DC FUSE
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8 - 54MOTHERBOARDFIGURE 8.4.6 95 12
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This page has no 'technical content
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