UPGRADING REPAIRING PCs

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86 Audio Code Sound Graph Description 1 short beep • Normal POST—system okay 2 short beeps •• POST error—error code on display No beep Power supply, system board Continuous beep ————— Power supply, system board Repeating short beeps •••••• Power supply, system board 1 long, 1 short beep -• System board 1 long, 2 short beeps -•• Video adapter (MDA/CGA) 1 long, 3 short beeps -••• Video adapter (EGA/VGA) 3 long beeps - - - 3270 keyboard card Microid Research Beep Codes The MR BIOS generates patterns of high and low beeps to signal an error condition. The following beep codes are for the current and recent versions (3.x) of the MR BIOS. Note Chapter 3—BIOS Configurations and Upgrades MR BIOS beep codes used by permission of Phoenix Technologies, Ltd. Port 80h Beep Code Codes Error Messages 03h LH-LLL ROM-BIOS Checksum Failure 04h LH-HLL DMA Page Register Failure 05h LH-LHL Keyboard Controller Selftest Failure 08h LH-HHL Memory Refresh Circuitry Failure 09h LH-LLH Master (16-bit) DMA Controller Failure 09h LH-HLH Slave (8-bit) DMA Controller Failure 0Ah LH-LLLL Base 64KB Pattern Test Failure 0Ah LH-HLLL Base 64KB Parity Circuitry Failure 0Ah LH-LHLL Base 64KB Parity Error 0Ah LH-HHLL Base 64KB Data Bus Failure 0Ah LH-LLHL Base 64KB Address Bus Failure 0Ah LH-HLHL Base 64KB Block Access Read Failure 0Ah LH-LHHL Base 64KB Block Access Read/Write Failure 0Bh LH-HHHL Master 8259 (Port 21) Failure 0Bh LH-LLLH Slave 8259 (Port A1) Failure 0Ch LH-HLLH Master 8259 (Port 20) Interrupt Address Error
Port 80h Beep Code Codes Error Messages 0Ch LH-LHLH Slave 8259 (Port A0) Interrupt Address Error 0Ch LH-HHLH 8259 (Port 20/A0) Interrupt Address Error 0Ch LH-LLHH Master 8259 (Port 20) Stuck Interrupt Error 0Ch LH-HLHH Slave 8259 (Port A0) Stuck Interrupt Error 0Ch LH-LHHH System Timer 8254 CH0/IRQ 0 Interrupt Failure 0Dh LH-HHHH 8254 Channel 0 (System Timer) Failure 0Eh LH-LLLLH 8254 Channel 2 (Speaker) Failure 0Eh LH-HLLLH 8254 OUT2 (Speaker Detect) Failure 0Fh LH-LHLLH CMOS RAM Read/Write Test Failure 0Fh LH-HHLLH RTC Periodic Interrupt/IRQ 8 Failure 10h LH-LLHLH Video ROM Checksum Failure at Address XXXX, Mono Card Memory Error at Address XXXX, Mono Card Memory Address Line Error at Address XXXX, Color Graphics Card Memory Error at Address XXXX, Color Graphics Card Address Line Error at Address XXXX 11h none Real Time Clock (RTC) Battery is Discharged 11h none Battery Backed Memory (CMOS) is Corrupt 12h LH-HLHLH Keyboard Controller Failure 14h LH-LHHLH Memory Parity Error_18h_19h Microid Research Beep Codes 87 14h LH-HHHLH I/O Channel Error_18h_19h 14h none RAM Pattern Test Failed at XXXX, Parity Circuit Failure 18h in Bank XXXX, Data Bus Test Failed: Address XXXX, 19h Address Line Test Failed at XXXX, Block Access Read Failure at Address XXXX, Block Access Read/Write Failure: Address XXXX, Banks Decode to Same Location: XXXX and YYYY 12h none Keyboard Error—Stuck Key Keyboard Failure or no 15h Keyboard Present 17h LH-LLLHH A20 Test Failure Due to 8042 Timeout 17h LH-HLLHH A20 Gate Stuck in Disabled State (A20=0) 17h none A20 Gate Stuck in Asserted State (A20 Follows CPU) 1Ah LH-LHLHH Real Time Clock (RTC) is Not Updating 1Ah none Real Time Clock (RTC) Settings are Invalid 1Eh none Disk CMOS Configuration is Invalid, Disk Controller Failure, Disk Drive A: Failure, Disk Drive B: Failure 1Fh none Fixed Disk CMOS Configuration is Invalid, Fixed Disk C:(80) Failure, Fixed Disk D:(81) Failure, Please Wait for Fixed Disk to Spin Up 20h none Fixed Disk, Disk, Serial Port, Parallel Port, Video, Memory, or Numeric Coprocessor Configuration Change 21h none System Key is in Locked Position—Turn Key to Unlocked Position 29h none Adapter ROM Checksum Failure at Address XXXX Note for beep codes: L=low tone and H=high tone
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UPGRADING AND REPAIRING PCs TECHNIC
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Associate Publisher Greg Wiegand Se
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Contents 1 General Technical Refere
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Contents vii IDE Hard Drive Identif
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Serial Port Configuration 172 Avoid
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Contents xi Sound Quality Standards
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About the Authors Scott Mueller is
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watch, photograph, and (occasionall
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Tell Us What You Think! As the read
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Chapter 1 General Technical Referen
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Understanding Bits, Nibbles, and By
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Note Glossary of Essential Terms 5
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Glossary of Essential Terms 7 Table
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Glossary of Essential Terms 9 Table
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Table 1.5 Hexadecimal/ASCII Convers
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Hexadecimal/ASCII Conversions 13 Ta
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Table 1.5 Hexadecimal/ASCII Convers
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Hexadecimal/ASCII Conversions 17 Ta
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20 Chapter 2—System Components an
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Page 54 and 55: 36 Caution Chapter 2—System Compo
Page 56 and 57: 38 Table 2.15 Troubleshooting Power
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Page 62 and 63: 44 modules can be divided by 9, but
Page 68 and 69: 50 Other Add-On Card Configuration
Page 87 and 88: Chapter 3 3 BIOS Configurations and
Page 89 and 90: Where BIOS Updates Come From 71 Tab
Page 91 and 92: How to Recover from a Failed BIOS U
Page 93 and 94: Note A complete list of PnP device
Page 95 and 96: Other BIOS Troubleshooting Tips 77
Page 97 and 98: Determining the Motherboard Manufac
Page 99 and 100: Determining the Motherboard Manufac
Page 101 and 102: Table 3.8 Common Keystrokes Used to
Page 103: Phoenix BIOS Beep Codes The followi
Page 107 and 108: BIOS Configuration Worksheet 89 BIO
Page 109 and 110: BIOS Configuration Worksheet 91 Sha
Page 111 and 112: 4 SCSI and IDE Hard Drives and Opti
Page 113 and 114: Cable key prevents improperly plugg
Page 115 and 116: Breaking the 504MB (528-Million-Byt
Page 117 and 118: Table 4.3 Using LBA Mode Operating
Page 119 and 120: 5. Use the #4 option—View Current
Page 121 and 122: Using LBA Mode 103 Table 4.6 Why ID
Page 123 and 124: Sources for BIOS Upgrades 105 Table
Page 125 and 126: Improving Hard Disk Speed 107 Figur
Page 127 and 128: Bus-Mastering Chipsets for IDE 109
Page 129 and 130: Table 4.13 Bus-Mastering Chipsets b
Page 131 and 132: Table 4.14 Other IDE Drive Installa
Page 133 and 134: standard single-ended SCSI devices
Page 135 and 136: SCSI Drive and Device Configuration
Page 137 and 138: SCSI Drive and Device Configuration
Page 139 and 140: Following these tips will help mini
Page 141 and 142: SCSI Configuration Troubleshooting
Page 143 and 144: Using FDISK 125 Using FDISK FDISK i
Page 145 and 146: Benefits of Hard Disk Partitioning
Page 147 and 148: How FDISK and the Operating System
Page 149 and 150: How FDISK and the Operating System
Page 151 and 152: Now, the operating system can use t
Page 153 and 154: The command switches are explained
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MS-DOS Command-Line Access to CD-RO
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• Make sure the drive shows up as
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Troubleshooting Optical Drives 141
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144 Chapter 5—Floppy, Removable,
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156 • OnStream’s ADR (Advanced
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160 Table 5.13 High-Performance Tap
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166 Chapter 6—Serial Ports and Mo
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168 Table 6.2 25-Pin (PC, XT, and P
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170 Table 6.4 Overview of UART Chip
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188 (These settings require changes
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190 Chapter 7—Parallel Ports, Pri
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192 Building a Parallel Loopback Pl
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