EPSON Product Support Bulletin Subject: Proper Method for Running Benchmark and Diagnostics Programs Date: 06/04/93 Page(s): 1 of 1 PSB No: S-0158 Originator: MWT This bulletin describes the proper method for running any benchmark or diagnostics programs. This applies to any computer system. In most cases, the computer should be started using an MS-DOS boot diskette that’s ‘clean’ - in other words, one with no CONFIG.SYS or AUTOEXEC.BAT files.
Product Support Bulletin Subject: Equity LT Battery Life and the AdaptaPAK Battery Pack Date: Page: 9/7/89 1 of 2 S - 0096 PSB No.: Originator: BGB (-7 ;i4 The purpose of this bulletin is to provide the test results of the Product R&D’s AdaptaPAK Battery and usage instructions. Like the Equity LT’s internal battery, (refer to PSB S- 0055) there are several usage variables that can have a significant effect on the working time.
PSB No: S-0096 Page: 2 of 2 5) Weight 7 Ibs, size 3 X 6 X 11 inches. The product is manufactured and available from: Product R&D Corporation 1194 Pacific St., Suite 201 San Luis Obispo, CA 93401 Phone: (805) 546 - 9713 The AdaptaPak product includes the ExtraPAK battery and AdaptaCORD. Both are required for use with the Equity LT. Epson Accessories, Inc. is considering the possibility of offering the AdaptaPAK for resale.
PSB No.: S-0062I Page: 1 of 18 EISA SERIES DESKTOP VER PART # 0.10.20.01 DESKROM DESC Phoenix TYPE LOC 27C512 REASON U26 INITIAL RELEASE EISA SERIES TOWER VER PART # TOWERROM DESC TYPE LOC U26 REASON INITIAL RELEASE EQUITY LT VER 1.00 1.00 1.01 1.01 PART # Y164802001 Y164803001 DESC TYPE HLO-A1 HLO-B1 HLO-A2 HLO-B2 27C64 27C64 27C64 27C64 LOC 3F 5F 3F 5F REASON INITIAL RELEASE (FIRST 800 UNITS) Fixes problems with the serial port and Microsoft Word. EQUITY LT286e VER 1.01 1.
EPSON EPSON AMERICA, INC. PRODUCT SUPPORT BULLETIN SERVICE DATE: PSB NO.: S-0055 SUBJECT: EQUITY LT BATTERY PAGE: 1 of 4 6/14/88 LIFE bulletin is to provide additional The purpose of this battery charge life with the Equity LT. information regarding There are several variables that can have a significant effect on the working time obtainable from a charge.
I NUMBER: S-0055 PAGE: 2 of 4 RGB monitor ports can serial or Heavy use of the parallel, this is of less time. Functionally, reduce working also these ports via interface because devices that concern (with the exception of battery-powered printers and modems) will require AC power, allowing access to the LT's AC adapter. Battery Condition "memory".
NUMBER: S-0055 PAGE: 3 of 4 How to get the most out of the Equity LT battery charge It is possible to extend the working the Equity LT by following a few simple guidelines: time of 1) Turn the hard disk drive power OFF. For most applications, constant access to the hard disk drive is not required. wait for the Once the application is loaded into RAM, HDD power switch drive access LED to go out and turn the turn the HDD off.
I NUMBER: 5) PAGE: S-0055 4 of 4 Traveling Software has recently introduced a battery package called monitoring maintenance software and Battery Watch. This package has been written specifically including the for a number of popular laptop systems, Equity LT.
EPSON EPSON AMERICA, INC. PRODUCT SUPPORT SERVICE PSB NO.: S-0053 SUBJECT: EQUITY BULLETIN PAGE: 1 of 1 DATE: 6/1/88 I+/II+/III+/LT DIAGNOSTIC "EXEC failed" MESSAGE The purpose of this bulletin is to clarify the correct usage of the DIAGNOSTIC DISK. Many customers and dealers have contacted Epson's Technical Support because of getting a "EXEC failed" error message when trying to run the system diagnostics MEMORY test.
Product Support Bulletin Subject: Using Expanded Memory with Equity and Apex Computers Date: Page: 3/2/90 1 of 6 Q1. A. Q2. A. PSB No: Originator: S-0047C KAS ‘/“p& What is Expanded Memory? Conventional memory, managed by MS - DOS, is limited to 640K. In response to the need for greater amounts of accessible memory, the LIM EMS (Lotus/Intel/Microsoft Expanded Memory Specification) was introduced in 1984. EMS, version 3.2, provides usable memory beyond the 640K limit through “bank switching”.
PSB No: S-0047C Page: 2 of 6 Q3. A. Q4. A. Q5. A. What about the 155Mb RAM listed as the maximum for the Equity III +? This larger amount of RAM is the maximum usable memory range for an 80286 microprocessor and generally refers to extended memory. Extended memory starts at the 1Mb boundary and extends out to 16Mb. As it requires a 24 - bit address to access memory in this range, extended memory is handled by the protected mode of the 80286.
PSB No: S-0047C Page: 3 of 6 Q6. What memory expansion boards are compatible with the Equity I and Equity II? A. The following boards have been tested by Epson in the Equity I and II: All Card w/MMU Multifunction Liberty PC Mini Magiccard (EV - 138) AST SixPak Premium AST Rampage All Computers, Inc. Quadram Corporation Everex Systems, Inc. AST Research AST Research Q7. What memory expansion boards are compatible with the Equity Ill? A.
PSB No: S-0047C Page: 4 of 6 Q10. What memory expansion boards are compatible with the Equity II + and Equity Ill + (10MHz models)? A. The following boards have been tested by Epson in the Equity II + and Equity Ill + (10MHz models): Advantage Premium Rampage 286 * Above Board 286 Above Board 286 p/s * Grande Byte * Rio Grande Elite 16 AST Research AST Research Intel Corporation Intel Corporation STB Systems STB Systems Profit Systems * Will run at 8MHz, not at 10MHt. Q11.
PSB No: S-0047C 5 of 6 Page: Q13. A. Are there any guidelines to installing the SlMMs in the Equity 386/20? Yes, when SlMMs are installed to increase memory beyond 1Mb, they must be installed so that banks of SlMMs are installed as matched pairs.
PSB No: S-0047C Page: 6 of 6 Q17. Are there any general guidelines for determining the chip speed to install on the memory expansion boards? A. Yes, if the CPU speed is 8MHz or less, use 150ns RAM chips. If the CPU speed is 10/12MHz, use 120ns RAM chips. Q18. Is there anything that should be kept in mind during the installation procedure for the memory expansion boards? A. Yes, when installing the memory boards in the Equity II + and Equity Ill + (12MHz models), remember that the bus speed is 12MHz.
EPSON EPSON AMERICA INC. SERVICE DEPARTMENT PRODUCT SUPPORT BULLETIN DATE: 02/25/88 PSB #: 0036 SUBJECT: Equity LT - Common Questions and Answers Q1. Can I switch the CPU speed between 4.77 MHz and 10 MHz while the L T is in operation ? A. Yes - the CPU and clock circuitry are fully synchronized. Q2. How can I adjust the speaker volume? A. You can’t. There is no provision, either hardware or software, for volume control. Q3. What type of keyboard is the LT keyboard compatible with? A.
Q5. Can I move my LT around while it is turned on ? A. With a dual-FDD LT, it should be okay to move it around as long as both drive access LEDs are off. Moving it in the middle of a disk access is definitely not recommended. With the hard disk model, the HDD motor is normally on, even if there is no drive access. Simply turn the HDD power switch (on the back of the LT) off. When you’re finished moving, turn the HDD power back on. Q6. How do I use a color CRT with my LT? A.
Q11. What kind of mouse can I use? A. Just about any mouse can be used with the LT, provided it uses the RS-232C serial interface (like the Microsoft Serial-PS/2 Mouse). Q12. Can the amount of RAM memory be increased? A. No. Epson does not provide any memory expansion capabilities. Q13. Can I use a light pen? A. No. Even though the necessary I/O registers are present, there is no connector for the light pen. Q14. What kind of external FDD can use with the LT? A.
Q18. Can I install the HDD option kit myself? A. The installation procedure is very complex, and should only be performed by authorized servicers. Q19. Does the HDD automatically park the heads in the shipping zone when the LT is turned off? A. No, head parking is a little different on the LT. Approximately 5 seconds after the last HDD access, the heads are driven to the shipping zone and the drive access LED goes out. Whenever the LED is out, YOU may safely shut down.
Q24. What other HDDs can I use with the LT? Can I use an external HDD? A. Only the proper internal HDD from Epson can be used with the LT. Q25. How many HDDs can be used with the LT? A. Only one HDD is supported. LCD Displays Q26. Can I replace the EL (electroluminescent) element in the backlit LCD? A. Yes, you can. The replacement procedure is explained in Appendix A of the Equity LT User’s Guide.
Q30. How are colors distinguished on the LCD display? A. Text mode In text mode, the CGA can display 16 colors (8 normal, 8 intensified), In LCD mode 3, 8 gradations are used for the 8 normal colors and the double-width font is used for the intensified colors. Note that in LCD modes 0, 1 and 2 that the colors are not distinguished. Intensity is represented by use of the double-width font or a halftone. Graphics mode CGA can display 4 colors at the same time in the 320 x 200 graphics mode.
Q33. Is the battery being charged if I’m using the computer? A. Yes, the battery is being charged whenever you have the AC adapter connected. It will take longer to charge if the LT is turned on, however. Q34. Can I use any other AC adapter? A. NO! Use only the Epson adapter that comes with the LT. Q35. Can I use the adapter with 220/240 volts, as well 110/120? The adapter label says “100 - 120 VAC” for input. A. Yes, you can. The label was printed that way for the U.L. and C.S.A.
*1 : Maximum backlight brightness *2 : Backlight turned off *3 : HDD switch turned off Q37. What are the differences in the ROM BIOS between the Equity LT and the Equity I+? A. The differences are: 1) The Equity LT ROM BIOS turns off the EL element of the backlit LCD if a specified time has passed without keyboard input. The backlight is restored by pressing any key. The backlight period is stored in system CMOS RAM. 2) The Equity LT supports both LCD and RGB displays.
Q39. What are the differences in GW-BASIC 3.20 between the Equity LT and other desktop computers? A. The version of GW-BASIC provided with the LT is the same version supplied with the Equity + series PCs. However, due to the fundamental differences between a desktop and a laptop PC, certain GW-BASIC commands and functions do not apply to the LT.
