Page 1: ......
Page 2: ...vice Inc A Subsidiary of Data General Corporation MAINTENANCE SERVICE GUIDE POR MODELS 6236 6237 DISK DRIVE SUBSYSTEM Prepared by Data General Service Inc A Subsidiary of Data General Corporation West...
Page 3: ...C AND ITS CUSTOMERS NO REPRESENTATION OR OTHER AFFIRMATION OF FACT CONTAINED IN THIS DOCUMENT INCLUDING BUT NOT LIMITED TO STATEMENTS REGARDING CAPACITY RESPONSE TIME PERFORMANCE SUITABILITY FOR USE O...
Page 4: ...s contained herein are the property of OGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment ma...
Page 5: ...IELD REPLACEABLE UNITS 1 5 DISK DRIVE SUBSYSTEM DESCRIPTION 1 12 Printed Circuit Boards 1 12 Controller PCB 1 13 Head Disk Assembly 1 13 Power Supply Assembly 1 13 Coarse Air Filter 1 14 Switch Assemb...
Page 6: ...DKP REL and UDKV REL Reliability Programs 4 16 4 19 4 29 4 30 4 38 4 43 6236 FMTR Formatter Program 4 59 REMOVAL AND REPLACEMENT PROCEDURES 5 1 TOOLS AND EQUIPMENT 5 3 CONTROLLER PCB REMOVAL REPLACEME...
Page 7: ...1 3 6 2 6 3 6 3 1 6 3 2 6 3 3 6 3 4 6 4 6 4 1 6 4 2 6 4 3 6 5 6 5 1 6 5 2 6 6 6 7 TABLE OF CONTENTS Continued TITLE PAGE Electrical Specifications 6 4 Environmental Specifications 6 5 TOOLS EQUIPMENT...
Page 8: ...gnostic Switches 2 7 Internal Switches and Indicator LEDs 2 12 Gaining Access to the Drive 2 14 Front Panel Digital Display Indicator Error Code Listing 2 25 Coarse Air Filter 2 27 6236 Disk Subsystem...
Page 9: ...Control PCB 5 16 Control Logic PCB 5 18 Power Amplifier PCB 5 20 Spindle Control PCB 5 21 Power Control PCB 5 22 Power Supply rear view 5 25 Power Supply side view 5 26 Power Control PCB and Control...
Page 10: ...pindle Control PCB LEDs 2 19 Power Amplifier PCB LED 2 19 Power Up Test Sequence 2 21 Power Up Sequence ON LINE Normal Operating Mode 2 22 Spindle Control PCB LEDs 4 13 Power Amplifier PCB LED Power C...
Page 11: ...or Channel Interface BMCI The controller PCB is CPU resident The 6236 disk drive has a formatted storage capacity of 354 Megabyte MB and the 6237 disk drive has a formatted storage capacity of 1 06 Gi...
Page 12: ...354 MB Disk 100 V 50 Hz 354 MB Disk 220 V 50 Hz 354 MB Disk 240 V 50 Hz 354 MB Disk 100 V 60 Hz 354 MB Disk 120 V 60 Hz without Controller PCB 354 MB Disk 100 V 50 Hz without Controller PCB 354 MB Di...
Page 13: ...d specifications contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or se...
Page 14: ...36 disk drive subsystem The 6237 disk drive subsystem consists of three independent 6236 disk drives Table 1 2 Model 6236 Performance Specifications Sheet 1 of 2 Description Formatted Capacity Number...
Page 15: ...FIELD REPLACEABLE UNITS Specification 10 ms 3000 rpm 1 68 MB sec 10 EXP 10 10 EXP 12 Table 1 3 lists the Field Replaceable Units FRUs contained in the 6236 6237 disk drive subsystem Figure 1 3 illustr...
Page 16: ...M 600 MV 6000 MV 8000 S 140 External I O Cable Assembly S 280 MV 4000 MV 10000 MV 8000 II 30 feet External I O Cable Assembly S 280 MV 4000 MV 10000 MV 8000 II 40 feet External I O Cable Assembly S 2...
Page 17: ...0 voltage Select Plug 220 V 50 Voltage Select Plug 120 V 60 Voltage Select Plug 100 V 50 Voltage Select Plug 100 V 60 Power Cord 100 120 v Power Cord 220 240 v Fuse 10 A 250 V Fuse 2 A 250 V Fuse 6 A...
Page 18: ...ons contained herein are the property of DGC and shall neither be reproduced In whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment...
Page 19: ...ns contained herein are the property of DGC and shall neither be reproduced in Whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment m...
Page 20: ...GC equipment and software The drawings and specifications contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be impli...
Page 21: ...nd specifications contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or s...
Page 22: ...performed by the read write PCB The read write channel operates in two modes write and read During a write encoded digital serial write data from the control logic PCB is converted to a write current...
Page 23: ...15 x 15 inch microprocessor driven intelligent PCB It contains all the logic necessary to transfer data between the host CPU and the disk drive via the BMC Programmed I O PIO transfers are informatio...
Page 24: ...the 6237 disk drive installation cabinet as shown in Figure 1 4 The switch is connected to the power package and to the power supply assembly It controls the flow of ac power from the power package to...
Page 25: ...14 701000 FOR DISK DRIVE OPERATING INSTRUCTIONS This section describes the operating controls and procedures for the 6236 6237 disk drive subsystem Also the following user initiated sequences and inst...
Page 26: ...rewith SWITCH POWER ON OFF POWER ON OFF FS 07104 Table 2 1 External Switches LOCATION FUNCTION Front Panel A two position switch that controls the PCB flow of power to the 6236 6237 disk drive In the...
Page 27: ...s and specifications contained herein are the property of OGC and shall neither be reproduced In whole or in part without DGC s prior written approval nor be Implied to grant any license to make use o...
Page 28: ...aker located in the rear of the drive as shown in Figure 2 3 The circuit breaker controls the flow of ac power from the ac power source to the power supply assembly Refer to Figure 2 3 for the circuit...
Page 29: ...t Breakers The disk drive circuit breakers 3 are accessible with the Meter High Cabinet rear panel removed The procedure for the removal or replacement of the rear panel follows refer to Figure 2 4 1...
Page 30: ...panel assembly and remove the panel from the chassis 2 To replace the front panel Position the front panel correctly depress the two tabs on the front panel and install it to the front of the disk dri...
Page 31: ...re The drawings and speclflcatiOns contained herein are the property of OGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license...
Page 32: ...state the drive will display the unit number in the unit number digital display If the fault monitor is active and it has an error code to display the fault monitor overrides the error reporter If the...
Page 33: ...S LED is illuminated If the controller PCB detects this error and if it transmits a Soft Reset command the error code is blanked and the STATUS LED is extinguished The error code LED ON OFF sequence w...
Page 34: ...t recent to oldest At the end of dumping the error log the microECLIPSE CPU monitors SW3 to see if it is still ON If SW3 is still ON the microECLIPSE CPU starts the power up tests If SW3 is OFF the mi...
Page 35: ...for gaining access to the drive is as follows refer to Figure 2 7 Gaining access to the drive service position 1 Depress the two tabs on the sides of the front panel assembly and remove the panel fro...
Page 36: ...le or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith LEDS Q 1 SPINDLE CONTROL FAULTl 0 2 SPINDLE SPE...
Page 37: ...roduced In whole or In part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured In accordance herewith SW1 WRITE PROTECT SWITCH POSITION...
Page 38: ...in accordance herewith 0 0 0 TOP COVER CABINET RACK MOUNT SUPPORTS 10 0 FS 07110 SWITCH WRITE PROTECT DISABLE I 0 0 f I I I I CABINET MOUNTING SCREWS 2 TAB 2 FRONT PANEL Figure 2 7 Gaining Access to...
Page 39: ...and that the following conditions exist Drive is powered up Drive spindle is up to speed Drive is at proper temperature Power up tests have been successfully completed or an error condition was encoun...
Page 40: ...ON position the CHECK LED extinguishes If the CHECK LED illuminates with the power ON OFF switch in the ON position the drive has powered down due to a de power fault It is an indication that de power...
Page 41: ...er to Figure 2 1 for an illustration of the digital display indicator on the front panel The following paragraphs provide a functional description of the UNIT and STATUS digital displays NOTE The stat...
Page 42: ...PCB causes LED to extinguish ACPWROK ON When power ON OFF switch OFF Indicates loss of ac is set in the ON position power LED momentarily LED illuminates blinks the drive powers down OVTMP OFF Indicat...
Page 43: ...Indicates spindle SPINDLE condition in spindle speed fault NOTE SPEED speed spindle is up LED will illuminate FAULT to correct operating during 35 sec power up speed test 07 and extin guishes when the...
Page 44: ...and unit switches refer to paragraph 2 1 3 Replace the front panel 3 Set the power ON OFF switch in the ON position 2 2 1 1 Power up Tests When the power ON OFF switch is set in the ON position the d...
Page 45: ...o digit number to the STATUS digital display indicator The numbers count down from 09 to 01 in the sequence listed in Table 2 10 Refer to Section 3 Theory of Operation for a detailed description of ea...
Page 46: ...Drive monitors for five shut down statuses Drive completes shut down status monitoring Drive begins power up tests Drive completes power up test 07 Spindle Up to Speed Drive completes final power up t...
Page 47: ...perating Mode SW3 0FF SW4 0FF the drive displays the drive unit number in the UNIT digital display indicator If a fault is detected by the microECLIPSE it t ansmits an error code to the STATUS digital...
Page 48: ...ROLLER INTERRUPT ALREADY ACTIVE Bl RD WR OP ERROR DATA MODE ACTIVE AFTER R W TERMINATED B2 PARITY ERROR BJ READ WRITE PDWER FAULT B4 RD WR SERVO AGC FAULT BS RD WR HEAD SELECT FAULT B6 RD WR SERVO CLO...
Page 49: ...g system It must be cleaned once per month If the filter is damaged it must be replaced DGC 002 11044 CAUTION Damage to the disk drive will occur if the disk drive is operated without the coarse air f...
Page 50: ...N 3 THEORY OF OPERATION This section describes the theory of operation for the 6236 6237 disk drive subsystem It contains sections on architectural functional and operational theory 3 1 ARCHITECTURAL...
Page 51: ...ritten approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith The rack mounted FCC c chassis contains the following major components refer to Fi...
Page 52: ...dia The HOA contains the following items shown schematically in Figure 3 3 Linear Motor Carriage Assembly Read Write R W Heads Servo Head Spindle Motor and External Spindle Blower Recording Media Exte...
Page 53: ...se or sell equipment manufactured In accordance herewith r a tQ L_ 1 U o _ _ 1 1 a zl Cl w w a a z 0 a aj a w a tQ iu o z Q tQ I u 0 o u a w 5 tQ u a 0 I z 0 u FS 07115 I z w a a u w Cl 5 i tQ w t w a...
Page 54: ...d to grant any license to make use or sell equipment manufactured in accordance herewith c I z i5 I a o u lil Wa I ii o o _ o I 55 ii I 0 O ffi I I t I I o I I a t l I I w I I I c al I I ii L l I s a...
Page 55: ...rfaces of the disks are used except the top of the top disk and the bottom of the bottom disk making eight surfaces available Positioner information is on the bottom surface of the bottom disk The R W...
Page 56: ...f the spindle motor On the external shaft of the spindle motor on the bottom and outside of the HDA there is a blower assembly which provides a continuous circulation of air within the 6236 disk drive...
Page 57: ...panel PCB refer to Figure 3 7 consists of the front panel switches DEV SEL 0 DEV SEL l DIAG 0 DIAG l and ON OFF the front panel LEDs CHK RDY PRO UNIT and STATUS three seven segment digital display ind...
Page 58: ...in the drive is interrupted When the power ON OFF switch is in the ON position the power control PCB supplies the de voltages to the drive and extinguishes the CHK LED While the drive is running the C...
Page 59: ...6236 disk subsystem is distributed from the power supply and the power control PCB refer to Figure 3 9 3 1 4 1 The Power Supply Assembly The power supply assembly is located at the rear of the disk d...
Page 60: ...he property of DGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance...
Page 61: ...eproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment manufacturedin accordance herewith al a s u u f u 0 5 Ow E a a a a...
Page 62: ...ished via connectors for the 50 and 60 Hz output taps and the 50 and 60 Hz ferroresonant capacitor taps Mating jumper plugs are used to select either 50 or 60 Hz operation The proper selected secondar...
Page 63: ...lied to grant any license to make use or sell equipment manufactures in accordance herewith u u 0 z 0 _ z a 1 z 0 a u z 0 en z UJ 0 x I _ z UJ oz a u a x a o tz N _ a en 3 _ z a 1 z 0 a u u z UJ FS 07...
Page 64: ...d 15V regulated de power distribution for the drive The outputs of the regulated voltages are monitored for under and over voltage Each regulated voltage is critical the loss of any will sequence powe...
Page 65: ...0 J4 1 3 SPINDLE MOTOR 115000269 PCB LIN MTR INT 001003201 P3 J3 1 2 __c P1j J1 1 2 r 018001532 005020111 J2 1 2 PCB PWRAMP 001003159 J4 1 t J1 1 t l J P3 l J P7 l r 018001533 005020112 018001536 0050...
Page 66: ...2 Mb sec A data channel DCH for programmed I O PIO transfers The controller PCB refer to Figure 3 13 is a high performance microprocesser 6809 driven controller The microprocessor is controlled progr...
Page 67: ...without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufacturedin accordance herewith _ 0 z I 0 uo w u _ u a w s ct CJ I z o_ I I 01 ct 1 Cl w I u a...
Page 68: ...pare PROMS Command Registers Command Data Bus Control Tag Bus ECC Registers Sector Buffer and FIFOs To understand the operation of the controller PCB the structure of how the controller sends and rece...
Page 69: ...two special data structures for transmitting commands data and status information COMMAND BLOCKS which specify drive operations and data transfers INFORMATION BLOCKS which specify drive and controller...
Page 70: ...and device specific information about a device Extended status information blocks are used to inform of errors If an error occurs during controller or disk drive operation the controller writes the st...
Page 71: ...rior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith 3 2 2 1 The Control Logic PCB four functions The control logic PCB provides...
Page 72: ...al L_ I u a J 1 1 a il z 1 0 UJ I UJ a a z 0 a 6 31 I a UJ a u al u a a a z J Q al I u f z a 00 a u a UJ J J al 0 u a a I z 0 FS 07115 I z UJ a a u UJ I oc 0 c J al UJ UJ f oc f a u 0 al z c u Oa a I...
Page 73: ...r unload the FIFO The microECLIPSE supports the functions that the control logic PCB performs Input and output ports implement the control and status moni toring for both on board and off board system...
Page 74: ...ding to instructions received from the R W processor on the control logic PCB In write mode serial write data from the control logic PCB is translated into write current and transmitted to the R W hea...
Page 75: ...sent cylinder to the destination specified by the 6236 controller PCB Track follow maintain position on data cylinder center The position control PCB refer to Figure 3 18 consists of a logic interface...
Page 76: ...l data cable from the position control PCB The positioner signals are converted to the correct current to drive the linear motor If a fault occurs in the positioning system or the power control the se...
Page 77: ...blo fuse The primary signals to control the spindle motor come from the power control PCB via the spindle power amplifer control cable The spindle motor control circuitry also monitors itself for fau...
Page 78: ...o indicate that ac power has been applied but that de power has been interrupted By activating the front panel power ON OFF switch or by turning on the drive CB with the ON OFF switch in the ON positi...
Page 79: ...OTATIONAL POSITIONING SYSTEM The seven segment digital display indicator is set to the number three This test makes a check of the rotational positioning system This includes the sector counting hardw...
Page 80: ...se two special data structures for transmitting commands data and status information COMMAND BLOCKS CB which specify drive operations and data transfers and INFORMATION BLOCKS IB which specify drive a...
Page 81: ...ts memory on the control logic PCB the absolute track address of the heads It uses this absolute address and the new address to calculate the Distance To Go DTG to the new position and the direction t...
Page 82: ...fset to appear on the sector counter The offset is pre programmed by the controller PCB When this sector count is seen the microECLIPSE interrupts the controller If the controller responds to the inte...
Page 83: ...de and turns off the R W processor Once the R W processor is turned off the microECLIPSE returns the data flow control logic to the idle state In the idle state the FIFOs on the control logic PCB are...
Page 84: ...ext sector The read operation continues until the controller PCB s 2901 determines that the requested number of sectors have been transferred At this point the 2901 puts the command data bus into the...
Page 85: ...mmand data bus The logic unit immediately informs the position control PCB to move the heads towards the spindle while sensing the servo input from the R W PCB The power amplifier PCB produces the cur...
Page 86: ...ference the appropriate removal replacement procedure in Section 5 4 Diagnostic Troubleshooting Programs This subsection describes the diagnostic and reliability programs and how to use them in isolat...
Page 87: ...troubleshooting flowcharts Figure 4 2 6236 6237 Interconnection Diagram Use this figure as a guide to the cables that interconnect the disk drive FRU PCBs power supply assembly and head disk assembly...
Page 88: ...use or sell equipment manufactured in accordance herewith CONTROL LOGIC PCB J4 J1 TERMINATOR AC POWER CORD EXTERNAL VOCABLE FS 07135 POWER SUPPLY ASSY LEFT SIDE VIEW AC CIRCUIT BREAKER REAR VIEW J7 AN...
Page 89: ...t s P3 J2 J i l P2 J1 01B001S40 l OOS020120 J 01B001S33 t OOS020112 J J4 1 10 Pl I 018001S36 OOS020116 y SPINDLE MOTOR 11S000269 PCB LIN MTR INT 001003201 PCB A WINT 001003160 P3 J3 1 2 l P1 J1 1 2 P...
Page 90: ...7 8 16 15 13 11 10 9 16 15 13 11 10 9 16 15 13 11 10 9 CURRENT SENSE RET CURRENT SENSE COMMAND DISABLE SERVOE SERVOERET POSDISSTAT LOGIC PCBJ4 PINS31 THRU40 ARE GND ONJ4 CONTROL PANEL PCBJ1 PWR AMP P...
Page 91: ...PREAMP 118001662 Pl P2 Jl LINEAR MOTOR INTERFACE PCB 21 E2 1 VIO 1 I I E1 2f D 2 J I IT 3 J _ I m FLEX PWRAMP LEAD LINEAR PCB ASSY MOTOR J2 118001656 COIL YYl lf7 MODULE GND OA 1 _ YYYL_ OB 2 FL oc 3...
Page 92: ...n approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith FS 07138 FUSE F4 1OA FUSE F3 1OA FUSE F2 4A FUSE F1 4A d h d SVOK ACPWROK OVTM P SPFLT...
Page 93: ...l system LED momentarily blinks FAULT the drive powers down 02 OFF Indicates normal ON Indicates spindle SPINDLE condition in spindle speed fault NOTE SPEED speed that spindle is LED will illuminate F...
Page 94: ...B causes LED to extinguish ACPWROK ON When power ON OFF OFF Indicates loss of ac switch is set in the power LED momentarily ON position LED blinks the drive illuminates powers down OVTMP OFF Indicates...
Page 95: ...uminate 2 Drive is in write enable mode data can be written to the disk DISABLE Power 1 Servo system is enabled Amplifier PCB 2 Servo system is disabled Causes LED servo system disabled to illuminate...
Page 96: ...tion 2 Recycle the drive and power up the drive If the drive successfully powers up without an error code on the front panel digital display indicator previous error was a soft error If an error code...
Page 97: ...efore installing the top cover make sure all wires and ribbon cables are secured and not interfering with the installation of the top cover The edge of the top cover may damage wires and or cables whe...
Page 98: ...ntained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufa...
Page 99: ...re 4 2 where plugs and connectors are mentioned in the troubleshooting flowcharts Always start with the Master Flowchart Figure 4 6 The following flowcharts and figures are included Figure 4 6 Figure...
Page 100: ...MOVE FRONT PANEL AND VERIFY THAT SW3 AND SW4 ARE SET IN THE OFF POSITION REFER TO SECTION 21 INSTALL FRONT COVER SET ON OFF POWER SWITCH INTO THE ON POSITION LOAD ADES TAPE NO NO NO GO TO AC POWER CHE...
Page 101: ...ITION GAIN ACCESS TO THE DRIVE REFER TO PARAGRAPH 5 4 SET AC CIRCUIT BREAKER IN ON POSITION POWER UP THE DRIVE CHECK CONNECTOR J3PIN 1 ON THE POWER CONTROL PCB FOR 24VDC REPLACE POWER CONTROL PCB REFE...
Page 102: ...FF SWITCH IN THE ON POSITION REPLACE FRONT PANEL PCB REFER TO PARAGRAPH 5 6 RETURN TO START MASTER FLOWCHART FIGURE 4 6 SET POWER ON OFF SWITCH IN THE ON POSITION REPLACE POWER CONTROL PCB REFER TO PA...
Page 103: ...EMOVE CONNECTORS J7 Al lO JS FROM THE POWER CONTROL PCB THIS REMOVES ALL OC LOADS TO THE POWER SUPPLY EXCEPT FRONT PANEL REFER TO FIGURE 4 1 SET THE POWER ON OFF SWITCH IN THE ON POSITION OBSERVE THE...
Page 104: ...RITE PCB SET THE POWER ON OFF SWITCH IN THE ON POSITION AND OBSERVE THE LEOS ON THE POWER CONTROL PCB CONNECT CONNECTOR J7 ON THE CONTROL LOGIC PCB SET THE POWER ON OFF SWITCH IN THE ON POSITION ANO O...
Page 105: ...pecifications contained herein are the property of DGC an shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell e...
Page 106: ...ROR DATA MODE ACTIVE AFTER R W TERMINATED B2 PARITY ERROR B3 READ WRITE POWER FAULT B4 RD WR SERVO AGC FAULT BS RD WR HEAD SELECT FAULT B6 RD WR SERVO CLOCK FAULT B7 RD WR WRITE CURRENT FAULT BB RD WR...
Page 107: ...FUNC 09 5 00 2847 096 002847 UDKP RELI 09 5 00 2843 09 6 00 2843 UDKV RELI 09 5 00 2844 09 6 00 2844 6236 FMTR 09 5 00 2845 096 00 2845 6236 DIAG Program 6236 Moving Head Diagnostic The 6236 DIAG is...
Page 108: ...format and verify with automatic bad block remapping the 6236 6237 disk drive media This program is also used to install any controller microcode updates Proper operation of the disk drive subsystem...
Page 109: ...icates as failing FRUs Table 4 7 6236 DIAG Program Run Times APPROX RUN TIME TEST PERFORMED MIN SEC Controller Only 0 30 Each Unit 1 30 Table 4 8 Failing FRUs Indicated by the 6236 DIAG Program FRU LO...
Page 110: ...f any of the bits can be changed by typing keys 1 9 A F The program will continue running after updating the options Each key will complement the state of the bit affiliated with it thus bit four can...
Page 111: ...hrough the test 4 4 1 2 Operator Interface The operator is asked to respond to the following queries 6236 MOVING HEAD DISK DIAGNOSTIC 6236 DIAG REV XX HELP YES NO If help YES is requested the followin...
Page 112: ...the operator to set SWREG In general the error PC will point to a call error The option printout will be one of the following formats A STANDALONE CONTROLLER TEST FAILURES ERROR TYPE DIC XXX DIA XXX...
Page 113: ...he next instruction will be typed out ODT Conventions and Symbols The following conventions are used by ODT Pressing any illegal key causes the ODT to respond with a ODT is ready and at your service O...
Page 114: ...rry bit 6 Address of the location having the break point if any 7 Instruction at the break point location OTHER CELL OPENING COMMANDS Command Interpretation ADR Open the cell and print its conten ts O...
Page 115: ...ands Table 4 12 Other ODT Commands COMMAND INTERPRETATION RUBOUT ADR B D P ADR R K C This key is used to delete erroneously typed digits Each time the key is pressed the right most digit is deleted an...
Page 116: ...ller The function verification FUNC diagnostic program is a hardware firmware function verification diagnostic for the 6236 6237 disk drive system The hardware verification diagnostic 6236 DIAG progra...
Page 117: ...PCB Drive Chassis Power Bulk Power Supply Assy Drive Chassis Head Disk Assembly Drive Chassis Operating Modes and Switch Settings The Switch Register is used to select the program options not system...
Page 118: ...other commands Table 4 16 Other Commands COMMAND INTERPRETATION CR A return can be typed to continue the program after it is locked into a switch modification mode CTRL D This command given at any tim...
Page 119: ...REV XX HELP YES NO If help YES is requested the following five categories of help are provided Starting Addresses SWREG Console Control Program Commands Failing Replaceable Units FRU Notes Drive Erro...
Page 120: ...tion printout will be one of the following formats A STANDALONE CONTROLLER TEST FAILURES TYPE OF ERROR COMMAND CODE XXX DESCRIPTIVE MESSAGE FAILING MODULE DISK CONTROLLER B STATUS ERRORS MODE UNIT DEV...
Page 121: ...lity Programs The UDKP RELI reliability program is designed to run on 16 BIT ECLIPSE CPUs and the UDKV RELI reliabilty program is designed to run on 32 BIT CPUs The following subsections describe the...
Page 122: ...ARTING DATA APPROX RUN TIME ADDRESS PATTERN HR MIN SEC SA 501 RANDOM 18 00 SA 501 ALT 11 00 SA 502 RANDOM 23 30 SA 502 ALT 16 00 SA 506 03 00 SA 507 04 00 SA 511 20 00 SA 505 02 55 00 1 3 write Read C...
Page 123: ...one to eight 6236 6237 disk drive subsystems with one to four disk drives each The program device code s may be any device code 20 76 octal The program is a collection of tests designed to create max...
Page 124: ...T WITH OPTIONS Same as SA 500 except the operator is given options on data patterns refer to Table 4 19 and may choose a constant sector count by entering a number Any letter response will get the ran...
Page 125: ...ngineer may type in a test loop The following two questions must be answered upon starting at SA 503 PHYSICAL OR LOGICAL MODE PHY LOG If physical mode is selected ADDRESS in command string option refe...
Page 126: ...X lFlF PATTERN VRD HEX F6F6 PATTERN ROT HEX 2727 PATTERN ROTATED ON SUCCESSIVE PASSES ALT 52525 PATTERN FLO FLOATING ZERO PATTERN FLZ FLOATING ZERO PATTERN ADR TWO WORD LOGICAL ADDRESS VAR EXISTING WO...
Page 127: ...n logical mode ADDRESS 32 bit logical address NOTE Either a space or a comma may be used as an argument delimiter Each response is terminated by typing a carriage return CR If more space is needed on...
Page 128: ...ks into the adjacent track in the center diverging again to the extremes SA 507 RANDOM SEEK EXERCISER The program provides a random seek sequence of 5000 seeks All seeks are followed by one sector rea...
Page 129: ...Table 4 21 Switch Options Sheet 1 of 2 OCTAL BINARY BIT VALUE VALUE INTERPRETATION 1 0 Loop on error 40000 1 Skip looping on error 2 0 Pr int to console 20000 1 Inhibit print out to console 4 0 Print...
Page 130: ...ng keys 1 9 A F The program will continue running after updating the options Each key will complement the state of the bit affiliated with it thus bit four can be altered by typing key 4 Setting of an...
Page 131: ...Incremental Disk Address Test Command String Interpreter Not Used Runall Converging Diverging Seek Exerciser Statistics Error Log Recovery Odd Even Cylinder Address Test Program Special Notes Feature...
Page 132: ...d String Notes Miscellaneous Notes NOTE HELP information is only available on program load 6236 MOVING HEAD DISK RELIABILITY 16 BIT SYSTEMS UDKP REL SV REV XX STARTING ADDRESS XXX WRITE PROTECT DISK Y...
Page 133: ...llowing questions are asked If No the last or original default values are used SELECT MAPPING OPTION 0 1 2 CR 0 NO MAPPING 1 SOFTWARE PREMAPPING 2 CONTROLLER PHYSICAL REMAPPING DEFAULT 3 BMC UPSTREAM...
Page 134: ...am Output Error Description All errors are identified counted and the program is routed via base to a call to CKSW on the basis of switch settings refer to Table 4 21 The program will go into a scope...
Page 135: ...her the fault should be classed as a seek error or an address error The first 50 address errors will have their addresses logged Read Errors All read errors with the exception of data related errors a...
Page 136: ...roblem would be indicated An ECC error was detected but the ECC either failed to correct a correctable error or tried to correct an uncorrectable error This condition may result when the data checksum...
Page 137: ...6 will be recorded in the log Also a count of up to 15 hard errors will be recorded This count will be a subset of the first count NOTE The address information will be operator specified and the count...
Page 138: ...alled NOTE Install Firmware if used must be done before any other operations because all firmware resides in a scratch area and is only available on program load NOTE The 6236 6237 disk drive is shipp...
Page 139: ...of the program All the routines share a common structure and interface Each subroutine contains local interface where necessary to communicate its function The major subroutines may be executed conse...
Page 140: ...LUE VAiiUE INTERPRETATION 1 0 Loop on error 40000 1 Abort failing unit controller and continue with remaining units 2 0 Print to console 20000 1 Inhibit printout to console 4 0 Print pass 04000 1 Do n...
Page 141: ...at any time will restart the program Switches are left with the values they had before the command was issued CTRL 0 This command given at any time will cause the program control to go to ODT M This...
Page 142: ...Console Control refer to Table 4 25 NOTE HELP information is only available on program load SET SWPAK AS PER 8 0 Table 4 25 HIT CR TO CONTINUE TTY BAUD RATE DEC Only asked if RTC is not present for p...
Page 143: ...other operations as all firmware resides in a scratch area and is only available on program load ENTER ANY COMMENTS USE NL FOR NEW LINES CR TO EXIT Allows user to enter formatter notes Notes will app...
Page 144: ...be implied to grant any license to make use or sell equipment manufactured in accordance herewith If SWl O the program will loop on the program error condition Otherwise the program will continue wit...
Page 145: ...from its normal operating position in the equipment rack or installation cabinet There are no field adjustments for the 6236 6237 disk drive subsystem WARNING Prior to moving the disk drive from it n...
Page 146: ...a field replaceable unit FRU has been replaced refer to the diagnostic troubleshooting procedure and or diagnostic program that indicated the FRU failure and verify the proper operation of the new FRU...
Page 147: ...ective shipping bag 3 Avoid carpeted floors especially in low humidity areas 5 1 TOOLS AND EQUIPMENT The following tools and test equipment are needed to perform maintenance removal and replacement pr...
Page 148: ...PCBs in the CPU 5 Remove the two BMC ribbon cables and shorting plug from controller PCB 6 Note the slot number and remove the 6236 6237 controller PCB refer to Figure 5 1 HOST CPU EXTERNAL 1 0 CABLE...
Page 149: ...P10 i BMC PRIORITY JUMPERS SEE TABLE A Ref DGC Owg No 003 001578 Rev 00 I l TABLE A BMCI BUS PRIORITY JUMPERS PRIORITY HIGHEST HSCR 7 HSCR 6 HSCR 5 HSCR4 HSCR 3 HSCR 2 HSCR 1 HSCR 0 LOWEST INSTALLED J...
Page 150: ...each side of its slot in the computer chassis The PCB should slide smoothly and not bind The lock tabs provide the leverage needed to properly seat the circuit board connectors 9 Install the new 6236...
Page 151: ...ritten approval nor be implied to grant any license to make use or sell equipment manufact1 1red in accordance herewith FS 07110 0 0 o 0 I 0 0 0 0 0 0 CABINET RACK MOUNT SUPPORTS TOP COVER I CABINET M...
Page 152: ...e top cover to the base weldment assembly refer to Figure 5 4 Carefully bend both sides of the top cover outward in order to clear all PCBs wires and cables on the PCB support assembly lift the cover...
Page 153: ...l nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith CAUTION Damage to the disk drive will occur if the disk drive is powered up without the coarse a...
Page 154: ...in accordance herewith 5 5 COARSE AIR FILTER REMOVAL REPLACEMENT CAUTION Removal Damage to the disk drive will occur if the disk drive is powered up without the coarse air filter installed on the fron...
Page 155: ...efer to paragraph 5 3 3 Remove the four mounting nuts securing the display panel support to the display bracket bottom and display bracket top remove the support refer to Figure 5 6 4 Press and releas...
Page 156: ...drawings and specifications contained herein are the property of DGC and shell neither be reproduced In whole or in part without DGC s prior written approval nor be Implied to grant any license to ma...
Page 157: ...ive 2 Remove the front panel refer to paragraph 5 3 3 Open up the drive refer to paragraph 5 4 4 Unplug connectors Jl J2 and J3 from the read write PCB and make note of their position refer to Figure...
Page 158: ...e The drawings and specifications contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license...
Page 159: ...ection 2 for the power down procedure set the ac circuit breaker in the OFF position 2 Remove the front panel refer to paragraph 5 3 3 Open up the drive refer to paragraph 5 4 4 Unplug connectors Jl J...
Page 160: ...ions contained herein are the property of OGC and shall neither be reproduced in whole or In part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment...
Page 161: ...ection 2 for the power down procedure Set the ac circuit breaker in the OFF position 2 Remove the front panel refer to paragraph 5 3 3 Open up the drive refer to paragraph 5 4 4 Unplug connectors Jl t...
Page 162: ...and specifications contained herein are the property of DGC and shall_neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or...
Page 163: ...refer to paragraph S 3 3 Open up the drive refer to paragraph S 4 4 Unplug connectors Jl to JS from the power amplifier PCB and make note of their position refer to Figure S 10 s Carefully unplug the...
Page 164: ...rive place the ON OFF switch into the OFF position Refer to Section 2 for the power down procedure Set the ac circuit breaker in the OFF position 2 Remove the front panel refer to paragraph S 6 3 Open...
Page 165: ...Control PCB 5 12 POWER CONTROL PCB REMOVAL REPLACEMENT Removal 1 Power down position Set the ac the disk drive place the ON OFF switch into the OFF Refer to Section 2 for the power down procedure cir...
Page 166: ...l equipment manufactured in accordance herewith Replacement 8 Plug connectors J7 and JS into the new power control PCB 9 Install the new power control PCB onto the PCB support assembly making sure it...
Page 167: ...F position Refer to Section 2 for the power down procedure Set the ac circuit breaker in the OFF position 2 3 4 5 6 7 8 Unplug external I O cables terminator and ac power cord from the rear of the dri...
Page 168: ...breaker in the OFF position 18 Remove the clear plastic protective cover from the power supply that was just removed refer to Figure 5 13 Remove the three power supply stunt plugs from the power suppl...
Page 169: ...whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith AC CIRCUIT BREAKER FS 07156 TERMINATOR Figu...
Page 170: ...shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment manufacture in accordance herewith FS 07157 POWER...
Page 171: ...POWER SUPPLY STUNT PLUGS REMOVAL REPLACEMENT WARNING Removal After powering down the drive high voltages are still present Wait at least five minutes for the capacitor to discharge to a safe level SOV...
Page 172: ...ower down the disk drive place the ON OFF switch in the OFF position Refer to Section 2 for the power down procedure Set the ac circuit breaker in the OFF position located in the rear of the drive 2 U...
Page 173: ...al nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith TERMINATOR AC POWER CORD FS 07159 AC CIRCUIT BREAKER Figure 5 16 AC Circuit Breaker 5 16 POWER...
Page 174: ...ll the clear plastic protect cover on the rear of the power supply 8 Install the rear cover to the base weldment assembly 9 Attach the ac power cord external I O cable and terminator to the rear of th...
Page 175: ...the PCB support assembly refer to Figure S 18 7 Disconnect connectors J2 and J3 on the power amplifier PCB refer to Figure S 19 8 Disconnect connectors J2 J3 J4 and JS on the spindle control PCB refe...
Page 176: ...lift the HOA by pulling up on the linear motor The pulling force on the linear motor will damage it CAUTION When removing the HOA be careful not to damage the HOA air support bracket any wires or cab...
Page 177: ...e reproduced In whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith J1 L H PLENUM PCB SUPPORT AS...
Page 178: ...contained herein are the property of OGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manu...
Page 179: ...1 11 J1 1l 1 111 _ ol Figure 5 21 HOA Front View 19 Install the new HOA on the four mounting studs on the base weldment assembly Install and tighten the four mounting nuts that secure the HOA to the b...
Page 180: ...tion S 18 TERMINATOR REMOVAL REPLACEMENT Removal 1 Power down the disk drive place the ON OFF switch in the OFF position Refer to Section 2 for the power down procedure Set the ac circuit breaker in t...
Page 181: ...anufactured in accordance herewith FS 07165 TERMINATOR _ SHOWN WITH REAR COVER REMOVED Figure 5 22 Terminator and AC Power Cord o 5 20 METER HIGH CABINET REMOVAL REPLACEMENT PROCEDURES Model 6237 The...
Page 182: ...weldment panel Replacement 8 Align the new latch assembly over the two holes in the weldment panel and snap the latch assembly into place 9 Secure the latch assembly into place by installing and tight...
Page 183: ...drawings and specifications contained herein are the property of OGC Jlnd shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to ma...
Page 184: ...The drawings and specifications contained herein are the property of OGC and shall neither be reproduced in whole orin part without OGC s prior written approval nor be implied to grant any license to...
Page 185: ...rame 12 Install the harness plug into the power package 13 Replace the switch bezel by inserting the bottom tabs into the cowl snap the top of the bezel into place Push the metal clips onto the plasti...
Page 186: ...er to Section 2 for the power down procedure 2 Place the Meter High Cabinet ON OFF switch in the OFF position 3 Set the ac circuit breaker in the rear of the cabinet in the OFF position refer to Figur...
Page 187: ...tions contained herein are the property of OGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipmen...
Page 188: ...roduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith AC LATCH ASSEMBLY FS 07169 REAR V...
Page 189: ...o Figure 5 25 9 Remove rear weldment panels by inserting a screwdriver into the latch and push the latch toward the center of the cabinet refer to Figure 5 26 The panel can be removed when the latches...
Page 190: ...power package in its correct position on the frame Feed the wires through the hole in the base of the frame 22 Install the five screws which secure the power package to the frame 23 Install the top co...
Page 191: ...rior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith 31 32 33 34 35 36 Install the cable panel to the rear of the cabinet Slide t...
Page 192: ...e factory before being shipped In general such a system only needs to be placed in position the padding material removed from inside and around the equipment the shipping restraints removed the carria...
Page 193: ...k drive subsystem 6 1 1 Physical Specifications Table 6 1 lists the physical specifications for the 623676237 disk drive Figure 6 1 illustrates the dimensions of the 6236 disk drive and Figure 6 2 ill...
Page 194: ...whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured in accordance herewith I I I I FS 07170 FS 07171 711 2 28 1 DIMENSI...
Page 195: ...3 6236 6237 Disk Drive Service Dimensions 6 1 2 Electrical Specifications Table 6 2 lists the electrical specifications of the disk drive and Table 6 3 lists ac power cable requirements Table 6 2 Ele...
Page 196: ...m 10 ft 109 00681 3 prong IEC 10 Amp Std 3 prong outlet POWER 3 Phase 2 9 m 7 5 ft 005 1437 2 L21 30R L21 30P 6 1 3 Environmental Specifications The site must meet suitable environmental specificatio...
Page 197: ...and to perform the initial operating checkout procedures Table 6 5 Tools and Test Equipment DESCRIPTION DGC PART NUMBER DGC Engineer Tool Kit 005 012583 Voltage Multimeter 128 000786 Oscilloscope PHIL...
Page 198: ...specifications contained herein are the property of OGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell...
Page 199: ...uipment manufactured in accordance herewith REMOVE ANTI TIP BARS BOLTED IN REAR OF CABINET CABINET FRONT INSTALL ANTI TIP BARS IN THIS LOCATION Figure 6 5 Anti tip Bar Installation WARNING The 6237 dr...
Page 200: ...software The drawings and specifications contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any l...
Page 201: ...fications contained herein are the property of OGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equi...
Page 202: ...pproval nor be implied to grant any license to make use or sell equipment manufact Jred in accordance herewith WARNING Prior to installing the disk drive s be sure the installation cabinet s anti tip...
Page 203: ...en handling MOS PCBs Service personnel should do the following 1 Before removing the controller PCB from its protective shipping bag and or before handling it touch a solid ground to eliminate static...
Page 204: ...ith MAJOR COMPONENT ITEM COMPONENT MOUNTING NOTES LOCATION A RIGID DISK DRIVE CABINET B FRONT PANEL CABINET c COARSE AIR FILTER CABINET 002 011044 CABLE ITEM CABLE CONNECTING MAXLGTH M NOTES D CPU INT...
Page 205: ...refer to Figure 6 11 1 Drive has stabilized to room temperature Allow subsystem to temperature stabilize for 24 hours prior to power on Leveling and cabling can be performed during this stabilizing p...
Page 206: ...NLY 113 000157 FUSE CLIP FOR STORAGE OF 002 021004 SHIPPING LOCK I I 002 024906 CLIP FOR STORAGE OF PRE LOAD SCREWS 002 021004 CARRIAGE SHIPPING LOCK AFTER REMOVAL OF SHIPPING LOCK INSTAll 106 002136...
Page 207: ...o installation into the host CPU chassis the controller PCB must be jumpered Refer to Figure 6 12 for information on controller PCB jumpering 6 4 1 3 Controller PCB Installation After jumpering the co...
Page 208: ...001578 Rev 00 6 t PS P9 DJ lllJ C204 C205 P8 P9 J JP BUS DISABLE JUMPERS INSTALL r 1 f BMC PRIORITY JUMPERS SEE TABLEA HIGHEST LOWEST FS 07146 TABLE A BMCI BUS PRIORITY JUMPERS P7 OJ P7 J JPCLK TEST J...
Page 209: ...ormation on internal switches 1 Remove the rear cover of the disk drive to gain access to the power supply assembly refer to Figure 6 13 Verify that the power supply is jumpered in the correct voltage...
Page 210: ...c _7 J FH CHASSIS POWER Ref DGC Dwg No 003 001823 Rev 02 VOLTAGE FREQUENCY TAILORING FS 07181 FREQ STUNT PLUG VOLTAGE 005 020121 VOLTAGE AC BRKR JUMPER LINE POSITIONS ON SYSTEM PART NO PLUGASSY CORD P...
Page 211: ...ons contained herein are the property of DGC and shall neither be reproduced in whole or in part without DGC s prior written approval nor be implied to grant any license to make use or sell equipment...
Page 212: ...ications contained herein are the property of OGC and shall neither be reproduced In whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equip...
Page 213: ...0 CHECK UNIT STATUS NOTE READ OUT FUNCTIONALITY OF SWITCHES OBSERVED WITH FRONT PANEL REMOVED SELECT DlSPLAY READOUT FUNCTION PER SW4 SW3 SELECT UNIT NUMBER PER SW1 SW2 Figure 6 17 Front Panel Switch...
Page 214: ...SHOWN LEFT SIDE MIRROR IMAGE b 7 j i 1 SLIDE BRACKET IN FRONT OF RAIL FLAT WASHER M4 PART NO 106000984 2REQD GUIDE PIN PART NO 002009455 2REQD KEPNUTM4 PART NO 106001559 SREQD SLIDE BRACKET 002 02107...
Page 215: ...A CPU INTERNAL INTERFACE CABLES CPU EXTERNAL CABLES CPU INTERNAL DESIGNATOR CPU TYPE CABLE 10 20 30 13 14 M600 005 020216 005 020298 005 020631 005 020632 13 14 S250 005 020216 005 020298 005 020631 0...
Page 216: ...MAX CONFIGURATION PER CONTROLLER SHOWN DUAL PORT SAME RULES AS SINGLE PORT fi 11 I I 1 L J PORT2 PORT 1 r i I Ii j I I 1 ___________J PORT2 PORT 1 i I I I I J PORT2 PORT 1 r II I I1 1 l L PORT 2 PORT...
Page 217: ...sition refer to Figure 6 8 2 Depress the two tabs on the sides of the front panel assembly on the bottom drive in the Meter High Cabinet and remove the front panel from the chassis refer to Figure 6 1...
Page 218: ...e power supply protective cover if removed install the rear cover 12 Carefully slide the drive back into the Meter High Cabinet until the front cover mounting brackets are flush with the installation...
Page 219: ...d herein are the property of DGC and shall neither be reproduced in whole or in part without OGC s prior written approval nor be implied to grant any license to make use or sell equipment manufactured...
Page 220: ...PUS DRIVE TERMINATOR 005 020105 TABLE B AC LINE CORD FOR INTERNAL ARGUS DRIVE 100V 50HZ 100V 60HZ 109 000719 120V 60HZ 220V 50HZ l09 0006lB 240V 50HZ EXTERNAL CABLES 20 30 40 005 020631 005 020632 005...
Page 221: ...ROCEDURES The following paragraphs describe the power up and power down procedures for the disk drive NOTE Refer to Section 2 for detailed information on disk drive operating procedures 6 5 1 Power Up...
Page 222: ...READY If the drive does not come READY refer to Section 4 and troubleshoot the problem 2 Load either UDKP or UDKV REL refer to Section 4 3 Run one error free pass of SA505 RUNALL If a 6236 6237 disk...
Page 223: ...taking the time to fill out this form Your answers and comments will help us improve the quality and usefulness of our publications YES NO 0 0 0 0 0 0 Was the manual easy to use If not please explain...
Page 224: ...SS 01772 Postage will be paid by addressee DataGeneral Service Inc A Subsidiary of Data General Corporation 50 Maple Street Milford MA 01757 M S M234 ATTENTION Field Engineering Technical Publications...
