SA7x Enclosure Service Manual Order Number: EK–OSA7X–SM. C01 This manual explains how to operate, maintain, troubleshoot, and repair the SA7x family of disk enclosures: the SA70, SA71, SA72, and SA73. Digital Equipment Corporation Maynard, Massachusetts...
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While Digital believes the information included in this publication is correct as of the date of publication, it is subject to change without notice. Digital Equipment Corporation makes no representations that the interconnection of its products in the manner described in this document will not infringe existing or future patent rights, nor do the descriptions contained in this document imply the granting of licenses to make, use, or sell equipment or software in accordance with the description.
Preface The SA7x Enclosure Service Manual explains how to install, operate, troubleshoot, and perform field level repairs of the SA7x family of enclosures: the SA70, SA71, SA72, and SA73. The manual is intended for Digital Multivendor Customer Services engineers. The SA70, SA71, SA72, and SA73 enclosures are physically identical. They are differentiated only by the RA7x disk drives they contain: •...
Related Courses and Documentation Table 1 lists the Digital courses related to the SA7x enclosure. Table 1 Related Courses Title Order Number AC Power & Grounding EY–B730–PO DSA Architecture Level 1 Course EY–5593E–IV Electrical Safety EY–B737E–PO Electrical Safety and Lockout/Tagout Procedures EY–E038E–SO...
Introducing the SA7x Enclosure This chapter is an overview of the SA7x enclosure, lists SA7x configurations and specifications, and discusses user precautions. 1.1 SA7x Enclosure Overview The term ‘‘SA7x’’ refers to the family of enclosures that includes: • The SA70—Accommodates one to four RA70 disk drives (280 MB each) •...
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COVER POSITION CXO-1845D_S You can combine SA7x enclosures into shadow sets. When using shadow sets, remember that when replacing the power supply or transition boards 1 or 2, you need to remove the power from the enclosure. RA7x disk drive can be used with any disk drive controller using a standard disk interface (SDI), including KDA50, KDB50, or KDM50 controller modules, hierarchical storage controllers (HSCs), and UDA controllers.
INDICATORS SERIAL NUMBER LOCATION SHOE PLATE SHOE J4 4-PIN PLATE POWER ELECTRONIC CONTROL MODULE (ECM) J3 20-PIN REMOTE OPERATOR CONTROL PANEL CONNECTOR J2 8-PIN SDI J1 8-PIN SDI CONNECTOR CONNECTOR (PORT B) (PORT A) CXO-1878B_S Introducing the SA7x Enclosure 1–3...
Introducing the SA7x Enclosure 1.1 SA7x Enclosure Overview Figure 1–3 RA71 Through RA73 Disk Drives FRONT VIEW 4-PIN POWER REAR VIEW 20-PIN 8-PIN SDI-PORT B 8-PIN SDI-PORT A BOTTOM VIEW SHOE PLATE CXO-3518A-MC 1–4 Introducing the SA7x Enclosure...
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• Enclosure-internal cables Figure 1–1 shows the major subassemblies of the SA7x enclosure. Except for the RA70 disk drive description, Figure 1–1 is accurate for all SA7x enclosures. The frame slides into the chassis and contains the mounting facilities for the other subassemblies.
Introducing the SA7x Enclosure 1.1 SA7x Enclosure Overview The fan assembly circulates cooling air throughout the frame of the SA7x enclosure. The air is drawn in through holes in the front panel on the enclosure and is exhausted through holes in the rear panel.
120-240 Vac, 50-60 Hz To install in an SA600 or SA800 storage array first upgrade the storage array as described in Chapter 5. Adding the first SA7x to a VAX 6000 or DECsystem 5800 system without internal storage devices requires an upgrade kit: 60 Hz system—Upgrade Kit 62X34–UA...
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Introducing the SA7x Enclosure 1.2 RA7x and SA7x Configurations Table 1–3 (Continued) SA7x Configurations RA70 RA71 RA72 RA73 Formatted Disk Disk Disk Disk Storage Enclosure Description Drive Drive Drive Drive Capacity SA72–EK Field add-on 1.0 GB SA900 120-240 Vac, 50-60 Hz SA72–FK...
1.3 SA7x Specifications Recommended environmental limits for operating the SA7x enclosure are listed in Table 1–4. General specifications for the SA7x enclosure are shown in Table 1–5. Caution For the SA7x enclosure and installed RA7x disk drives to perform at the optimal level and maintain high reliability, they should be used in environments recommended in the following tables.
Introducing the SA7x Enclosure 1.3 SA7x Specifications Table 1–5 (Continued) SA7x Enclosure Specifications Characteristic Specification Operating temperature +10° C to +40° C (+50° F to +104° F). Derate 1.8° C for each 1,000 m altitude or 1.0° F for each 1,000 ft altitude.
1.4 User Precautions 1.4.2 Recommended Operating Temperature The SA7x enclosure and its installed drives can operate within a temperature range of +10° to +40° C (+50° to +104° F). However, Digital recommends that the enclosure and its drives be operated in a temperature range of +18° to +24° C (+64°...
• Power supply • Enclosure-internal cabling Figure 2–1 shows the SA7x enclosure with RA70 disk drives. The SA71, SA72, and SA73 enclosures are virtually identical; they all have either an RA71, RA72, or RA73 disk drive installed. 2.1 SA7x Chassis The SA7x chassis is made of extruded aluminum with a protective finish.
TRANSITION BOARD 2 TRANSITION BOARD 1 OPERATOR CONTROL POWER PANEL SUPPLY RA70 DISK DRIVE SHOWN CHASSIS MOUNTING SCREWS FRAME DRIVE POWER SWITCH PANEL LEFT FRONT DISK DRIVE POSITION RIGHT FRONT FRONT DISK DRIVE COVER POSITION CXO-1845D_S 2–2 SA7x Technical Description...
1 (TB1) and transition board 2 (TB2). TB1 mounts to the front of the SA7x frame. The OCP mounts to TB1. TB2 mounts to the frame above the disk drives. TB2 interfaces to TB1.
2.3 SA7x Fan Assembly 2.3 SA7x Fan Assembly The SA7x fan assembly consists of an axial fan mounted in a case. The fan assembly slides into a recess in the center portion of the frame and is secured with four mounting screws, as shown in Figure 2–3.
field replaceable unit (FRU). An associated transition board assembly is fastened to the SA7x frame. The OCP connects to TB1 with a 96-pin male connector and two clip/bullet fasteners (located on either side of the connector).
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SA7x Technical Description 2.4 SA7x OCP and Transition Board Assembly Note The supply voltage to the fan does not change when the fan speed is changed. Rather, the presence or absence of a control signal to the fan produces the two-speed operation.
SA7x Technical Description 2.4 SA7x OCP and Transition Board Assembly Figure 2–4 SA7x Enclosure Front Panel and OCP PORT SWITCHES PORT SWITCHES U n it Se le ct LEFT RIGHT R un Fault / R eady W ri te R e a d y...
An enclosure Fault indicator is located on the power supply. This indicator is visible, when lit, through holes in the upper-rear panel of the power supply. The power supply provides operating voltages for all components of the SA7x enclosure, including the fan assembly. The outputs of the power supply include: •...
SA7x Technical Description 2.5 SA7x Power Supply Figure 2–6 SA7x Enclosure Rear Panel and Power Supply SDI INTERFACE CONNECTOR REAR PORT B BULKHEAD PORT B SDI INTERFACE SILK SCREEN CONNECTOR PORT A REAR COVER OVER- PORT A TEMPERATURE SILK SCREEN...
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SA7x Technical Description 2.5 SA7x Power Supply The individual regulators are enabled or disabled by the control lines A through D. These lines are connected to the dc drive power switches on the front panel. Setting a switch controls both the +5.1 Vdc and +12.1 Vdc outputs for each drive.
SA7x Technical Description 2.5 SA7x Power Supply Figure 2–7 Power Supply Block Diagram LATCHED SD ENCLOSURE TEMP SENSOR +5V A SENSE ACOK (INTERNAL TO SUPPLY) POWER +12V A SENSE LED A A SENSE OVERTEMP THERMAL +5V B SENSE SHUTDOWN SHUT-...
2.6 SA7x Enclosure Internal Cabling Appendix A contains a complete listing of cable origins, destinations, and pinouts. The subassemblies of the SA7x enclosure are linked through the power harness. The power harness branches to each disk drive position, to TB2, to the fan, and to the drive power switches.
A Digital Multivendor Customer Services engineer is qualified to install the SA7x enclosure upon successful completion of the courses listed in Table 1 in the Preface. 3.1.2 Recording Disk Drive Serial Numbers When installing add-on or replacement enclosures, verify that the serial number on the disk drives are properly recorded on the enclosure.
3.2 Selecting Line Input Voltage 3.2 Selecting Line Input Voltage The SA7x enclosure power supply can be set to operate from either 120 Vac (60 Hz) or 220 Vac (50 Hz). Use the following procedure to set the line voltage: 1.
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12. Complete the checkout of the disk drive by running the applicable diagnostics from the host system controller as described in the RA7x Disk Drive Service Manual. 13. Repeat steps 7 through 12 for each RA7x disk drive installed in the enclosure. Installing the SA7x 3–3...
Installing the SA7x 3.3 Performing a Post-Installation Checkout and Power-Up Figure 3–1 SA7x Enclosure Front Panel PORT SWITCHES PORT SWITCHES U n it Se le ct LEFT RIGHT R un Fault / R eady W ri te R e a d y...
000 through 255. b. When the new microcode is installed you can set the drive unit number to any number from 000 through 999 providing that the correct version TB2 is installed. Installing the SA7x 3–5...
Internal SDI cables and power cords are installed in SA900 storage arrays only when a storage device is installed. The internal SDI cables and power cords are shipped with each add-on and you must install them. The contents of the SA7x add-on kit are: •...
CHASSIS RETAINER SEMS CONICAL SCREWS BOTTOM WASHER/SCREW CHASSIS RETAINING BRACKET CXO-2442B_S • The chassis retaining brackets, shown in Figure 3–4, are for the H9A00 cabinet. They attach to SA7x enclosure guide rail and the cabinet frame. 3–8 Installing the SA7x...
CXO-3939A-MC 3.6 Preparing the SA900 Cabinet Each SA7x enclosure is mounted in the cabinet with one guide rail plate assembly as shown in Figure 3–5. The guide rail plate is attached to the cabinet’s internal vertical uprights, and it supports the enclosure from one side. Grooves machined into the side of the enclosure mate with flanges along the sides of the chassis...
If the cabinet is installed and operating, spin down all disk drives and halt tape drives in the cabinet. Switch the circuit breaker on the front of the cabinet power controller to the off position. Figure 3–5 SA7x Enclosure Guide Rail Assembly Installation LOCKWASHER #10-32 MACHINE...
Insert the two front round stand-offs into the cabinet so that hole 71 becomes the center mounting hole in the guide rail plate. Installing the SA7x 3–11...
U-nut mounted on the cabinet front vertical upright. g. From the rear, insert and tighten two flathead screws through the top and bottom guide rail plate holes to the two U-nuts mounted on the cabinet rear vertical upright. 3–12 Installing the SA7x...
Insert the two rear round stand-offs into the cabinet so that hole 71 becomes the center mounting hole in the guide rail plate. Installing the SA7x 3–13...
Use the following procedure to prepare the SA7x enclosure for installation: 1. Remove the OCP (refer to Figure 3–1). a. Pull the OCP straight out from the front of the SA7x enclosure. b. Put the OCP in a safe place.
Install the power supply and tighten the two captive screws. 3.11 Installing the SA7X Enclosure Use the following procedure to install the SA7X enclosure into a SA900 cabinet: WARNING The fully-populated enclosure, with four disk drives and a power supply, weighs up to 40 kilograms (88 pounds) and can cause serious injury if lifted improperly.
Installing the SA7x 3.11 Installing the SA7X Enclosure Figure 3–7 Installing the SA7x Enclosure in the SA900 GUIDE RAIL ENCLOSURE REAR CABINET FRONT SA7x ENCLOSURE SCREWS GUIDE RAIL PLATE ASSEMBLY CXO-3574A-MC 3–16 Installing the SA7x...
A total of ten devices can be connected to the I/O bulkheads. The RA9x disk drive uses two SDI cables; the SA7x enclosure uses two special one-to-four cables. Each cable terminates with four connectors.
Installing the SA7x 3.11 Installing the SA7X Enclosure Figure 3–8 SA900 SDI Cable Connections 2. Install cables from drives and enclosures on the left side of the cabinet to the left vertical I/O bulkhead; install cables from drives and enclosures on the right side of the cabinet to the right vertical I/O bulkhead, as shown in Figure 3–8.
Port A, and the bottom four ports in each group of eight correspond to Port B.) 4. Connect the power cords to the rear of the SA7x enclosure, as shown in Figure 3–9. 5. Route the power cords from the storage devices on the right side of the cabinet down the right vertical I/O bulkhead.
ONLY when the disk drive is powered up. 4.1.1 Using the Switches and Indicators Table 4–1 is a summary of SA7x control and indicator functions. Table 4–2 is a detailed description of OCP control and indicator functions. The following general comments are also applicable: •...
Operating the SA7x 4.1 SA7x Switches and Indicators Figure 4–1 SA7x Enclosure Front Panel PORT SWITCHES PORT SWITCHES U n it Se le ct LEFT RIGHT R un Fault / R eady W ri te R e a d y...
The Fault/Set No. switch is a momentary pushbutton. When you press the switch and hold it, it is set; when you release the switch, it is reset. Table 4–1 SA7x Switch and Indicator Functions Operator Control Panel Controls and Indicators...
Operating the SA7x 4.1 SA7x Switches and Indicators Table 4–2 OCP Controls and Indicators Control (Indicator) Function Pressing the Run switch spins up the drive. The yellow Run indicator lights after the drive spindle reaches operating speed. Pressing the Run switch again releases the switch and spins down the drive.
Two rear panel switches and an indicator are located on the power supply chassis, as shown in Figure 4–2. These switches and indicator affect how the entire SA7x enclosure operates. Table 4–3 is a summary of the rear panel switches and indicators.
4.3 Applying Power to the SA7x Enclosure CAUTION Before applying power to the SA7x enclosure, ensure that the Line Selector Voltage switch on the enclosure, located behind the SA7x rear panel, is set to the proper line voltage. Otherwise, you will damage the power supply.
This section explains how to place RA7x disk drives on line and off line. 4.4.1 Placing a Drive On Line After applying power to the SA7x enclosure, use the following procedure to place a drive on line: 1. Press the drive power switch for the drive you want to bring online. (Refer to Figure 4–1.) If power to the drive is within specifications, the green drive...
5. Remove power from the enclosure by turning off the Master On/Off switch. (See Figure 4–2.) You are now ready to remove the disk drive from the enclosure. Refer to Chapter 6 for complete instructions. 4–8 Operating the SA7x...
5.2.1 If the Fault Indicator Is Lit If the SA7x enclosure is dead and the power supply Fault indicator is lit, turn off the Master On/Off switch located on the rear of the power supply. Check for airflow obstructions.
7. If the enclosure fan starts, proceed to Step 3 in Section 5.3. 8. If the enclosure fan does not start, replace FRUs in the following order until the problem is corrected: a. Power supply b. TB1 5–2 Troubleshooting the SA7x...
flashing drive power indicator is at fault. Replace the FRUs in the following order until the problem is corrected: a. Power supply b. Power harness The enclosure assembly (See the appropriate storage array guide for instructions.) Troubleshooting the SA7x 5–3...
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Troubleshooting the SA7x 5.3 Troubleshooting a Flashing Drive Power Indicator Figure 5–1 SA7x Enclosure Front Panel PORT SWITCHES PORT SWITCHES U n it Se le ct LEFT RIGHT R un Fault / R eady W ri te R e a d y...
FRU. 5.5 Reading OCP Error Codes The SA7x enclosure OCP displays error codes on the indicator set for each drive. (Refer to Figure 5–1.) These codes provide an initial clue to a drive fault prior to the detailed analysis provided by the drive’s internal log.
Troubleshooting the SA7x 5.5 Reading OCP Error Codes 3. Refer to the SA7x Enclosure Service Manual for a list of the OCP error codes with the suggested FRU replacement. 4. Press the Fault/Set No. switch again. This commands the drive to clear the fault and return to normal operation.
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3. If the unit number changes after power up, replace the FRUs in the following order until the problem is corrected: a. TB2 b. Power supply d. The two OCP ribbon cables e. TB1 The enclosure assembly (See the appropriate storage array guide for instructions.) Troubleshooting the SA7x 5–7...
Replacing RA7x Disk Drives This chapter explains how to install and remove an RA7x disk drive in an SA7x enclosure. Table 6–1 lists the the types of disk drives that are authorized for installation in each SA7x enclosure. Unless otherwise specified, a maximum of four disk drives of each type, or a combination of disk drives can be installed in an enclosure.
Notes • When an RA7x disk drive is installed in an SA7x enclosure, it is not possible to set the drive unit number using the dip switches on the drive itself. Unit numbers for all RA7x disk drives are set from the SA7x operator control panel (OCP) as explained in Chapter 3.
The adhesive serial number label included with the drive is for mounting on the enclosure. Affix the serial number label to the front cover of the SA7x enclosure. Place it so that it corresponds with the position of the disk drive in the enclosure, as shown in Figure 6–2.
Component serial number (five digits) 6.1.2 Reversing the RA70 Shoe Plate When the RA70 disk drive is to be installed in an SA7x enclosure, the shoe plate may need to be reversed on the drive so that it will mate with the shoe plate guide and shoe plate retaining clip in the SA7x enclosure.
1. Make sure the drive power switch for the drive position you are using is turned off. 2. Depending on where the disk drive is located in the SA7x enclosure, remove either the front or rear enclosure cover. Loosen or remove the two mounting screws in the upper corners of the cover, then lift the cover up and outward to clear the enclosure.
It is installed in the drive position next to the single installed drive (which should be installed in the rear of the enclosure). To install the drive position filler in the SA7x enclosure, use the following procedure: 1.
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Replacing RA7x Disk Drives 6.2 Installing and Removing a Drive Position Filler 3. The drive position filler is held in place with a shoe plate retaining clip on the outside wall of the chassis disk position. The retaining clip locks with a tab on the drive shoe plate.
Note If the SA7x enclosure is installed in a storage array cabinet when you are attempting to perform the removal and installation procedures explained in this chapter, you must first remove or open either the cabinet’s front or rear panel.
You need the following tools to perform removal and installation procedures explained in this chapter: #1 Phillips screwdriver 1/8-inch hex wrench #2 Phillips screwdriver 5/32-inch hex wrench 1/4-inch flat-bladed screwdriver Figure 7–1 SA7x Enclosure RIGHT REAR DISK DRIVE LEFT REAR POSITION DISK DRIVE POSITION REAR...
The power supply is accessible through the rear of the SA7x enclosure. 7.2.1 Removing the Power Supply Use the following procedure to remove the power supply from the SA7x enclosure. (See Figure 7–3.) 1. Take all of the drives in the enclosure off line to spin down the drives. (See Section 4.4.)
Replacing SA7x FRUs 7.3 OCP Removal and Installation Figure 7–3 SA7x Enclosure Rear Panel and Power Supply SDI INTERFACE CONNECTOR REAR PORT B BULKHEAD PORT B SDI INTERFACE SILK SCREEN CONNECTOR PORT A REAR COVER OVER- PORT A TEMPERATURE SILK SCREEN...
If you release this stop, nothing prevents the frame from being pulled completely free of the chassis. 6. Disconnect the eight cables connected to TB2. (See Figures 7–4 and 7–5.) 7–6 Replacing SA7x FRUs...
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LF connects to the connector labeled J2 • LR connects to J8 • RF connects to J3 • RR connects to J5 7. Remove TB2 from the frame by releasing the four plastic mounting tabs and pulling the board straight up. Replacing SA7x FRUs 7–7...
3. Slide the enclosure frame back into the cabinet and secure it in place with the four mounting screws. 4. If applicable, retract the cabinet stabilizer foot. 5. Reinstall the OCP. (See Section 7.3.) 6. Perform the checkout and power-up procedures explained in Section 7.10. 7–8 Replacing SA7x FRUs...
Replacing SA7x FRUs 7.5 Transition Board 1 Removal and Installation 7.5 Transition Board 1 Removal and Installation TB1 is located behind the OCP inside the SA7x enclosure. 7.5.1 Removing Transition Board 1 Use the following procedure to remove TB1: 1. Take all of the drives in the enclosure off line and release the Run switches to spin down the drives.
1. Orient the fan assembly with the fan motor facing the front of the enclosure and the fan cable exiting on the left top of the assembly. 2. Carefully move the SDI cables aside and fit the fan assembly between the tabs in the frame. Slide the assembly into place. 7–10 Replacing SA7x FRUs...
7.7 Remote OCP Cable Removal and Installation This section explains how to remove and install one of the four remote OCP cables in the SA7x enclosure. Two remote OCP cables are routed from their associated drives down each side of the frame and connected to TB2. These cables interface the disk drives to the OCP (through TB2 and TB1).
11. Pull the frame free of the chassis by reaching into the frame and grasping the sheet metal in front of the fan. Set the frame on an antistatic work surface. 12. Turn the frame so that the side with the defective remote OCP cable is facing 7–12 Replacing SA7x FRUs...
7.7.2 Installing a Remote OCP Cable Use the following procedure to install a remote OCP cable: 1. Route the replacement remote OCP cable through the enclosure frame and connect it to TB2 as shown in Figure 7–8. Replacing SA7x FRUs 7–13...
6. Reinstall the power supply. (See Section 7.2.) 7. Reinstall the disk drives. (See Chapter 6.) 8. Reconnect the storage array SDI interface cables to the rear bulkhead of the enclosure. 9. Reinstall the front and rear enclosure covers. 7–14 Replacing SA7x FRUs...
7.8.1 Removing a Power Harness Use the following procedure to remove the power harness from the SA7x enclosure. 1. Take all of the drives in the enclosure off line and release the Run switches to spin down the drives.
flush against the bracket. Secure the power supply connector with the two Phillips screws. 3. Connect all single and pigtail black and orange wires to all drive power switches (observing proper disk drive position). 7–16 Replacing SA7x FRUs...
Replacing SA7x FRUs 7.8 Power Harness Removal and Installation Figure 7–9 SA7x Enclosure Power Harness SINGLE BLACK SWITCH REAR PIGTAIL SINGLE/ BLACK PIGTAIL BLACK PHILLIPS POWER SUPPLY SINGLE SCREWS CONNECTOR ORANGE DC DRIVE POWER SWITCHES FRAME BOTTOM PHILLIPS SCREWS BOTTOM COVER REMOVED...
Releasing the chassis latch allows the frame to be removed from the chassis for this operation. Be prepared to take the weight of the frame when it comes free of the chassis. Have a work space ready to put the frame on after it is removed. 7–18 Replacing SA7x FRUs...
15. Cut the tie-wraps to remove the SDI cable from the SDI harness. 16. Note how the SDI cable is routed, and then remove it from all disk drive positions. Figure 7–10 SA7x Enclosure Internal SDI Cables STANDOFF SCREW (4 PLACES)
1. Verify that all power and interface connections to the rear of the enclosure are correct and secure. 2. Verify that the Line Voltage Selector switch on the power supply of the SA7x enclosure has been set to the proper source voltage. If not, set the switch as described in Section 3.2.
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12. Complete checkout of the disk drive by running the applicable diagnostics from the host system controller as described in the RA7x Disk Drive Service Manual. 13. Repeat steps 7 through 12 for each RA7x disk drive installed in the enclosure. Replacing SA7x FRUs 7–21...
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SA7x Internal Cabling This appendix contains SA7x internal cabling information. Figure A–1 shows a block diagram of the enclosure cables. The connectors referred to in this section are as follows: • Power harness P6 (41-pin) to all RA7x disk power connectors, to transition board #2 J7 (14-pin), and to front panel Drive Power switches •...
SA7x Internal Cabling Figure A–1 SA7x Enclosure Cabling Block Diagram PI (PORT A) PORT A (P4)J1 PI (PORT B) REAR RIGHT PORT B (P4)J2 BULKHEAD FRONT SDI INTERFACE DISK REMOTE OCP DRIVE POSITION (P4)J4 J1(P5) RIGHT (P3)J1 J2(P5) REAR LEFT...
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SA7x Internal Cabling Figure A–2 shows the cabling for the power harness. Figure A–2 Power Harness Cabling POWER SUPPLY CONNECTOR POWER HARNESS 70-26255-01 74-24440-01 54-19015-01 FRONT PANEL DC POWER SWITCHES CXO-2597A SA7x Internal Cabling A–3...
Figure A–3 OCP to Transition Board Assembly to Disk Drive Cabling 70-26254-02 54-19015-01 70-26254-01 70-26254-01 17-02717-01 54-19171-01 PLUG-IN CONNECTOR 70-25696-01 CXO-2598A Note The latest version of transition board 2 is Revision F03. A–4 SA7x Internal Cabling...
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SA7x Internal Cabling Figure A–4 shows the TB2 connection to the fan. Figure A–4 TB2 to Fan +12.6V +12.6V RTN FAN CONTROL H FAN ROT H CXO-2607A SA7x Internal Cabling A–5...
Figure A–6 shows the dc power connections for the four RA7x disk drive connectors (P2, P3, P4, and P5) shown in Figure A–2. Figure A–6 4-Pin DC Power Connector (RED WIRE) +5.0V DC GROUND (BLACK WIRE) (2 BLACK WIRES) SPINDLE MOTOR RETURN +12.0V DC (2 GRAY WIRES) CXO-3524A-MC SA7x Internal Cabling A–7...
If condensation is not visible on the drive, see Table B–1 for the correct thermal stabilization time. CAUTION The disk drive can be stabilized in or outside the SA7x enclosure. However, do not spin up the drive until it is stabilized. Table B–1 Thermal Stabilization Specifications...
Part Numbers This appendix lists the field replaceable parts for both the SA7x enclosure (Tables C–1 and C–3) and the RA7x disk drives (Table C–4). Table C–2 lists the parts for the H9A00 cables. Table C–1 SAxxx Cable Part Numbers...
OCP Error Codes This appendix lists the OCP (operator control panel) error codes provided in the host error log and the code displayed by the OCP. Use Table D–1 to convert the pattern of lights to OCP codes and to obtain a list of recommended FRUs to replace.
RA7x Error Rates This appendix defines the acceptable error rates for the RA7x disk drive. If error rates are no more than those indicated in Table E–1, the RA7x drive is performing within specifications. Table E–1 RA7x Error Rate Table Temperature Range Between Error Type 16°—...
RA7x Error Rates E.3 Loss-of-Positioner Errors E.3 Loss-of-Positioner Errors A loss-of-positioner error is a recoverable error attributed to a disruption or failure of the servo position control mechanism within the drive. Loss-of- positioner errors include: • Write and off-track errors (drive error code 39) •...
Revision Support This appendix lists the minimum versions of operating systems, diagnostics, and SDI controllers that support RA71 through RA73 disk drives in Release 43. The diagnostics and VAX Supervisor programs in Table F–1 all recognize RA71 through RA73 disk drives. The retired VAX Supervisor programs in Table F–2 do not recognize RA71 through RA73 disk drives.
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6–8 installing and removing an RA7x disk drive, 6–2 Installing add-on storage devices placing off line, 4–8 SA7x enclosure installed in the SA900, 3–6 placing on line, 4–7 Internal cabling, A–1 serial numbers, 6–3 Documentation, related, x Drive position filler installing and removing, 6–8...
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Overview, 1–1 OCP, 5–6 reading OCP error codes, 5–5 Type I data errors, E–1 Type II data errors, E–1 Part numbers SA7x, C–1 Power harness removing and installing, 7–15 Unrecoverable errors, E–2 Power supply removing and installing, 7–4 technical description, 2–10 Precautions, 1–10...
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