Toshiba T5200, T5200C Maintenance Manual

MAINTENANCE MANUAL

MODEL:T5200 MODEL:T5200C

CHAP:1 HARDWARE OVERVIEW

SECT:1.1

1.1 GENERAL

Toshiba Personal Computer is a compact and advanced portable personal computer. The T5200 is a high-performance system with special features. The CPU is the 80386-20 32-bit microprocessor, operated at 20 MHz with 32 Kbytes high speed cache memory. The hard disk drive (HDD) has a capacity of 100 Mbytes (T5200/100 model) or 40 Mbytes (T5200 model) The floppy disk drive (FDD) can support 2DD (720 Kbytes) and 2HD (1.44 Mbytes) floppy disks. The standard memory has a capacity of 2 Mbytes, expandable up to 8 Mbytes maximum. The plasma display supports high resolution video graphics (VGA compatible) with 640 by 480 pixels (dots) and 16-levels of gray scale. The display mode is three mode, CGA mode, VGA-color mode, and VGA-monochrome mode. The keyboard has 91/92-key with the keys of a subset of the industry standard 101/102-key keyboard. For most applications it can be used exactly like a standard typewriter keyboard. The universal auto-sensing power supply is used for world- wide usage. The T5200 includes two internal IBM compatible expansion slots (one full lenge 16-bit slot and one half lenge 8-bit slot) and one Toshiba T3100 size expansion slot. The interface connector has one PRT/EXT. FDD connector (25-pin), two serial connectors (9-pin), and VGA connector (15-pin).

<fig id=MMS\5200\52001_1.TIF>Figure 1-1</fig> T5200 personal computer

SYSTEM UNIT

The configuration of the system unit is shown in figure 1-2.

<fig id=MMS\5200\52001_2.TIF>Figure 1-2</fig> System unit configuration

The key features of the system unit are:

o A system board, memory board, I/O board, high resolution graphics subsystem (HRGS) board, back panel board, and LED board.

o An internal 3.5-inch floppy disk drive (FDD) supporting two media types: 2HD (double-side, high-density, double-track) 2DD (double-side, double-density, double-track) The 2HD and 2DD floppy disks can be formatted with 1.44 Mbytes and 720 Kbytes of storage capacity respectively.

o An internal 3.5-inch hard disk drive (HDD) supporting two media types: 100-Mbyte HDD (T5200/100 model) 40-Mbyte HDD (T5200 model)

o An internal 91/92-key keyboard.

o An internal 640 X 480 pixel plasma display that has a 16-level gray scale capability. The display quality can be adjusted by contrast controls.

o A universal auto-sensing power supply that can be used world-wide provides +5VDC, +12VDC, -5VDC, and -12VDC power to all the components in the system unit, including the expansion board. For the plasma display, power supply provides the regulated +24VDC power to the DC-DC converter. The DC-DC converter converts from +24VDC power to +205VDC power, and provides to the plasma display. The power supply's ventilation fan is driven by +12VDC.

o A lithium battery that keeps the data and time in addition to the system configuration parameters even if the system power is switched off.

o The expansion slots can use the three slots types: 8-bit half-size industry-standard slot 16-bit full-size industry-standard slot 16-bit Toshiba standard slot One 8-bit half-size industry-standard slot or one 16-bit Toshiba standard slot is used exclusively.

o The various ports are provided at rear of the system unit, such as 25-pin bidirectional parallel/external FDD connector, two 9-pin serial interface (I/F) connectors, and 15-pin VGA I/F connector.

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1.2 MAIN BOARDS

Figure 1-3 shows the block diagram of the main boards.

<fig id=MMS\5200\52001_4.TIF>Figure 1-3</fig> Block diagram

1.2.1 System Board

System board is composed of the following components:

o Central processing unit: CPU (80386-20) The CPU is a 32-bit microprocessor operated at 20 MHz clock speed.

o Numeric data processor socket for the 80387-20 (optional).

o Real time clock: RTC (MC146818A) The RTC continuously keeps the date and time powered by lithium battery.

o Serial input output: SIO (NS16450) The SIO controls the serial port.

o Keyboard controller: KBC (8042)

o Keyboard scan controller: SCC (8749)

o Cache memory controller: (82385-20)

o Memory Read only memory: ROM 128 Kbytes (system BIOS) Static random access memory: SRAM 32 Kbytes (cache memory)

o One super integration: SI (T4758A) SI includes the two DMACs (equivalent to 82C37), two PICs (equivalent to 82C59), and one PIT (equivalent to 82C54)

o Gate arrays: The following gate arrays are used in the system board. Memory controller gate array: GA-MCNT3 Memory bus latch gate array: GA-BLAT Compatible bus latch gate array: GA-CLAT Bus controller gate array: GA-BCNT2

1.2.2 Memory Board

Memory board is composed of the following components:

o Memory Random access memory: RAM 2 Mbytes Memory module socket: three 2-Mbyte memory module sockets

1.2.3 I/O Board and High Resolution Graphics Subsystem (HRGS) Board

I/O board and HRGS board are composed of the following components:

I/O board o One supper integration: SI (T9761) SI includes the floppy disk drive (FDD)/Parallel input and output (PIO) controllers, one FDC (equivalent to TC8565), one SIO (equivalent to NS16450), and I/O decoders. o Variable frequency oscillator: VFO (MB4108A) The VFO chip is used for FDD control logic. o Basic graphics subsystem: BGS includes of the following ICs. o Display controller gate array: PDC-GA

(CGA compatible) o Video RAM: 32 Kbytes o Character Generator ROM: CG-ROM 64 Kbytes The CG-ROM supports four character font sets.

HRGS board o Paradise video graphics array: PVGA1 (VGA compatible) o High resolution graphics subsystem gate array: HRGS-GA o Video RAM: 256 Kbytes o Digital to analogue converter: DAC (IMS G171-35) o HRGS BIOS ROM: 32 Kbytes

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1.3 SYSTEM BOARD JUMPER STRAPS

The system board has two jumper strap (PJ 16, 17) located on the system board as shown in figure 1-4, and a status is listed in table 1-1.

<fig id=MMS\5200\52001_7.TIF>Figure 1-4</fig> System board jumper strap

Table 1-1 System board jumper strap status

ЪДДДДДДДДДДДВДДДДДДДДДДД¿ ³PJ No. ³Status ³ ГДДДДДДДДДДДЕДДДДДДДДДДД´ ³ 16 ³ Open ³ ³ДДДДДДДДДДДЕДДДДДДДДДДД´ ³ 17 ³ Open ³ АДДДДДДДДДДДБДДДДДДДДДДДЩ

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1.4 3.5-INCH FLOPPY DISK DRIVE

The 3.5-inch internal FDD is a high performance, reliable and thin drive that supports 720-Kbyte (formatted) 2DD and 1.44-Mbyte (formatted) 2HD

3.5-inch floppy disks. The FDD is shown in figure 1-5 and its specifications are described in table 1-2.

<fig id=MMS\5200\52001_8.TIF>Figure 1-5</fig> 3.5-inch FDD

Table 1-2 3.5-inch FDD specifications

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ Item ³ Specifications ³ ³ ГДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДД´ ³ ³2-Mbyte Mode ³1-Mbyte mode ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Storage Capacity (Kbytes) ³ ³ ³ ³ Unformatted ³ 2,000 ³ 1,000 ³ ³ Formatted ³ 1,440 ³ 720 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³No. of Heads ³ 2 ³ 2 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³No. of Cylinders ³ 80 ³ 80 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Access Time (ms) ³ ³ ³ ³ 1 Track Access ³ 3 ³ 3 ³ ³ Average ³ 94 ³ 94 ³ ³ Head Settling Time ³ 15 ³ 15 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Recording Density ³ 135 ³ 135 ³ ³(bit per inch) ³ ³ ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Data Transfer Rate ³ 500 ³ 250 ³ ³(Kbytes per second) ³ ³ ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Rotational Speed ³ 300 ³ 300 ³ ³(revolutions per minute) ³ ³ ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДД´ ³Recording Method ³ MFM (Modified Frequency ³ ³ ³ Modulation ³ АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

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1.5 3.5-INCH HARD DISK DRIVE

The 100-Mbyte and 40-Mbyte hard disk drive (HDD) is a random access type storage device. It equipped with non-removal 3.5-inch magnetic disk and mini-winchester type magnetic heads. The HDD is shown in figure 1-6 and specifications are described in table 1-3.

<fig id=MMS\5200\52001_9.TIF>Figure 1-6</fig> 3.5-inch HDD

Table 1-3 3.5-inch HDD specifications

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ Item ³ Specifications ³ ³ ГДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДД´ ³ ³ 100-Mbyte ³40-Mbyte ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Storage Capacity (Mbytes) ³ ³ ³ ³ Formatted ³ 104 ³ 42.6 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Number of Disks ³ 4 ³ 2 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Number of Heads ³ 8 ³ 4 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Number of Cylinders ³ 776 ³ 805 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Track Density ³ ³ ³ ³ (tracks per inch ³ 1,150 ³ 1,000 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Track Capacity (bytes) ³ ³ ³ ³ Formatted ³ 16,896 ³ 13,312 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Number of Sectors per Track ³ ³ ³ ³ (sectors) ³ 33 ³ 26 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Number of bytes per sector ³ ³ ³ ³ (bytes) ³ 512 ³ 512 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Access Time (ms) ³ ³ ³ ³ Track to Track ³ 8 ³ 10 ³ ³ Average ³ 25 ³ 29 ³ ³ Maximum ³ 45 ³ 50 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Average Latency ³ 8.4 ³ 8.33 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Interleave ³ 1:1 ³ 1:1 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Rotational Speed (rpm) ³ 3,575 ³ 3,600 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Data Transfer Rate ³ ³ ³ ³ (Mbytes per second) ³ ³ ³ ³ To/From Media ³ 1.25 ³ 1.0 ³ ³ To From Buffer ³ 3.75/4.75 ³ 4.0/5.0 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Start Time (s) ³ ³ ³ ³ Average ³ 15 ³ 7 ³ ³ Maximum ³ 20 ³ 20 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДД´ ³Stop Time (s) ³ ³ ³ ³ Average ³ 15 ³ 7 ³ ³ Maximum ³ 20 ³ 20 ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДД´ ³Recording Method ³ 2-7 RLL code ³ ³ ³ (Run Length Limited) ³ ГДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДД´ ³Recording Density ³ ³ ³

³ (bit per inch) ³ 23,441 ³ 21,379 ³ АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДЩ

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ Power Requirements (100-Mbyte) ³ ГДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³Item ³ +12VDC+5%, +5VDC+5%, Power ³ ГДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³R/W Mode ³ 350ma 300ma 5.7w ³ ³Seeking Mode ³ 260ma 180ma 4.0w ³ ³Idle Mode ³ 175ma 160ma 2.9w ³ АДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ Power Requirements (40-Mbyte) ³ ГДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³Item ³ +12VDC+5%, +5VDC+5%, Power ³ ГДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³R/W Mode ³ 250ma 250ma 4.25w ³ ³Seeking Mode ³ 240ma 150ma 3.6w ³ ³Idle Mode ³ 150ma 140ma 2.5w ³ АДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

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1.6 HDD JUMPER STRAPS

The HDD has four jumper straps located on the hard disk control board as shown in figure 1-7, and their status is listed in table 1-4.

<fig id=MMS\5200\52001_11.TIF>Figure 1-7</fig> HDD jumper straps

Table 1-4 HDD jumper strap status

ЪДДДДДДДДДДДДВДДДДДДДДДДДД¿ ³Signal ³Status ³ ГДДДДДДДДДДДДЕДДДДДДДДДДДД´ ³HSP ³Open ³ ГДДДДДДДДДДДДЕДДДДДДДДДДДД´ ³C/D ³Short ³ ГДДДДДДДДДДДДЕДДДДДДДДДДДД´ ³DSP ³Open ³ ГДДДДДДДДДДДДЕДДДДДДДДДДДД´ ³ACT ³Short ³ АДДДДДДДДДДДДБДДДДДДДДДДДДЩ

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MODEL:T5200 MODEL:T5200C CHAP:1 HARDWARE OVERVIEW SECT:1.7, KEYBOARD DOC_ID:1.7 T5200 LANG:ALL TEXT:

1.7 KEYBOARD

The 91/92-key keyboard with full size keys and standard spacing provides full compatibility with standard IBM software. The keyboard is connected to the keyboard controller on the system board through a 27-pin flat cable. The keyboard shown in figure 1-8.

<fig id=MMS\5200\52001_12.TIF>Figure 1-8</fig> Keyboard

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1.8 PLASMA DISPLAY

The plasma display is composed of a display panel and driver circuits. It receives vertical and horizontal synchronizing signals, four bit data signals, and shift clock for data transmission. All signals are TTL level compatible. The plasma display has 16-levels of gray scale and the display quality can be adjusted by contrast control. The specifications are described in table 1-5. The plasma display is shown in figure 1-9.

<fig id=MMS\5200\52001_13.TIF>Figure 1-9</fig> Plasma display

Table 1-5 Plasma display specifications

ЪДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³Item ³ Specifications ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДД´ ³PDP UNIT ³ D0640FX-008 ³ MD480T640PG3 ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³Number of Dots (dots) ³ 640 x 480 ³ <----- ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³Dot Dimension (mm) ³ 0.21(W) x 0.21(H) ³ 0.20(W) x 0.24(H) ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³Dot Pitch (mm) ³ 0.36(W) x 0.36(H) ³ <----- ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³Display Area (mm) ³ 230.4(W) x 172.8(H) ³ <----- ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´

³Color ³ Neon-Orange ³ <----- ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³Power Requirement ³ (VC) 5V с 0.25V ³ (E1) 5V с 0.5V ³ ³ ³ 180 mA ³ 400 mA ³ ³ ³ (VD) 5V с 0.25V ³ (E2) 205 V с 0.5V ³ ³ ³ 4.5 mA ³ 200 mA ³ ³ ³ (VA) 70V с 2V ³ (E3) 5V с 0.5V ³ ³ ³ 247 mA ³ 60 mA ³ ³ ³ (VK) 130V + 3V ³ ³ ³ ³ 175 mA ³ ³ АДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДЩ

Table 1-5 Plasma display specifications (continued)

ЪДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³Item ³ Specifications ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДД´ ³Mean Time Between ³ ³ ³ ³Failure ³ 30,000 ³ 20,000 ³ ³(MTBF) (hours) ³ ³ ³ ГДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДД´ ³DC/DC Converter ³ UA0289P10 ³ UA0289P11 ³ АДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДЩ

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1.9 POWER SUPPLY UNIT

The universal auto-sensing power supply can be used worldwide and supplies +5, -5, +12, -12 and +24 VDC to the system. The power supply unit is housed in the system unit and it supplies the regulated power to:

1) System board

2) Memory board

3) I/O board

4) HRGS board

5) 3.5-inch floppy disk drive

6) 3.5-inch hard disk drive

7) External keyboard

8) Plasma display

9) Option boards

10) Cooling fans

The above 2) through 7), 9) and one of cooling fans receive the power via system board. The power supply unit includes an input line filter, line fuse, cooling

fan, power conversion circuitry and connectors. Input ratings are: 115 VAC, 1.8 Amps or 230 VAC, 1.2 Amps The power supply unit is shown in figure 1-10 and the output ratings are specified in table 1-6.

<fig id=MMS\5200\52001_14.TIF>Figure 1-10</fig> Power supply unit

Table 1-6 Power supply unit output rating

ЪДДДДДДДДДДДДДДВДДДДДДДДДДДДДДВДДДДДДДДДДДДДДД¿ ³DC voltage ³Maximum ³Regulation ³ ³ (V) ³Current (A) ³Tolerance (%) ³ ГДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДД´ ³ +5 ³ 6.8 ³ +/- 5 ³ ³ +12 ³ 3 ³ +/- 5 ³ ³ -5 ³ 0.25 ³ +/- 5 ³ ³ -12 ³ 0.3 ³ +/- 10 ³ ³ +24 ³ 2.8 ³ + - 20 ³ АДДДДДДДДДДДДДДБДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДЩ

File No. : 960-011

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.1, GENERAL DOC_ID:2.1 T5200 LANG:ALL TEXT:

2.1 GENERAL

The problem isolation procedures described in part 2 are used to isolate defective FRUs (field replaceable units). The FRUs covered are:

1. Power supply unit

2. System board

3. FDD

4. HDD

5. Keyboard

6. Plasma display

Detailed replacement procedures are described in part 4 and test and diagnostics program operations are described in part 3.

The following items are necessary for implementing the problem isolation procedures.

1. T5200 diagnostics disk

2. Phillips head screwdriver

3. Blade head screwdriver

4. Tweezers

5. 2DD and 2HD formatted work disk (for FDD testing)

6. Cleaning disk kit (for FDD testing)

7. Multimeter

8. Printer port LED

The problem isolation flowchart described in section 2.2 can be used to determine which isolation procedures are necessary to isolate a T5200 problem.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.2, PROBLEM ISOLATION FLOWCHART DOC_ID:2.2 T5200 LANG:ALL TEXT:

2.2 PROBLEM ISOLATION FLOWCHART

The flowchart in figure 2-1 is used as a guide for determining which FRU is defective. Please confirm the followings before performing the flowchart procedures.

1. No disk is in the FDD.

2. All optional equipments are disconnected.

3. MS-DOS has been installed in drive C before a trouble happens.

<fig id=MMS\5200\52002_2.TIF>Figure 2-1</fig> Problem isolation flowchart

<fig id=MMS\5200\52002_3.TIF>Figure 2-1 (cont.)</fig> Problem isolation flowchart

1. If an error is detected on the system test, memory test, display test, or real timer test, perform the system board isolation procedures in section 2.4.

2. If an error is detected on the hard disk test, perform the HDD problem isolation procedures in section 2.6.

3. If an error is detected on the keyboard test, perform the keyboard problem isolation procedures in section 2.7.

4. If an error is detected on the floppy disk test, perform the FDD problem isolation procedures in section 2.5.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.3, POWER SUPPLY UNIT PROBLEM ISOLATION PROCEDURES DOC_ID:2.3 T5200 LANG:ALL TEXT:

2.3 POWER SUPPLY UNIT PROBLEM ISOLATION PROCEDURES

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³WARNING: Dangerous high voltage is supplied to the power supply ³ ³unit. Pay enough attention on handling. It takes few minutes after³ ³power off to discharge the electricity. ³ АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

This section describes how to determine whether or not the power supply unit is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: Power Indicator Check

PROCEDURE 2: Connector Check

PROCEDURE 3: Output Voltage Check

PROCEDURE 4: Power Supply Unit Replacement

PROCEDURE 1

Power Indicator Check

1. Turn on the power.

2. If the power indicator lights, go to PROCEDURE 3. If the indicator does not light, check the AC power cord connection. One end of the AC power cord should be inserted the standard AC wall outlet and the other end should be connected to the AC IN jack on the back of the system unit. If OK, replace the AC power cord. After replacing the AC power cord, if the indicator lights, the original cord was probably defective. If the indicator still doesn't light, go to PROCEDURE 2.

PROCEDURE 2

Connector Check

1. Turn off the power, then unplug the AC power cord.

2. Remove the top cover. (Refer to section 4.3.)

3. Remove the power supply unit. (Refer to section 4.9.)

4. If the power supply connector (PJ6 and PJ10) on the system board is connected properly, go to PROCEDURE 3. If it is not connected properly, reconnect it.

PROCEDURE 3

Output Voltage Check

1. Plug the AC power cord to the power supply unit, then turn on the power.

2. Use a multimeter to confirm that the output voltages of the three power supply connectors match to the values in table 2-1.

3. If the voltages are within the range of values given in table 2-1, the power supply unit is normal, but the system board is probably defective. Go to the system board isolation procedures in section

2.4.

4. If the voltages are still not within the range of values given in table 2-1, go to PROCEDURE 4.

Table 2-1 Power supply unit output voltages

ЪДДДДДДДДДДДВДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ ³Pin number ³ Voltage ( Vdc) ³ ³Connector ГДДДДДВДДДДДЕДДДДДДВДДДДДДДДВДДДДДДДД´ ³ ³+lead³-lead³Normal³ Min ³ Max ³ ГДДДДДДДДДДДЕДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ ³ 1 ³2,4,5³ 24 ³ 19.2 ³ 28.8 ³ ³ For ГДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ system ³ 3 ³2,4,5³ 12 ³ 11.4 ³ 12.6 ³ ³ board ГДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ ³6,7 ³2,4,5³ 5 ³ 4.75 ³ 5.25 ³ ГДДДДДДДДДДДЕДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ For ³ 1 ³ 3 ³ -12 ³ -13.2 ³ -10.8 ³ ³ system ГДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ board ³ 2 ³ 3 ³ -5 ³ -5.25 ³ -4.75 ³ ГДДДДДДДДДДДЕДДДДДЕДДДДДЕДДДДДДЕДДДДДДДДЕДДДДДДДД´ ³ For ³ ³ ³ ³ ³ ³ ³ cooling ³ 1 ³ 2 ³ 12 ³ 11.4 ³ 12.6 ³ ³ fan ³ ³ ³ ³ ³ ³ АДДДДДДДДДДДБДДДДДБДДДДДБДДДДДДБДДДДДДДДБДДДДДДДДЩ

PROCEDURE 4

Power Supply Unit Replacement

1. Turn off the power, then unplug the AC power cord.

2. Replace the power supply unit. (Refer to section 4.9.)

3. If normal operation is restored after replacing the power supply unit, the original power supply unit was probably defective.

4. If normal operation is not restored, another FRU is probably defective. The defective unit must be isolated and replaced.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.4, SYSTEM, MEMORY, AND I/O BOARDS PROBLEM ISOLATION PROCEDURES DOC_ID:2.4 T5200 LANG:ALL TEXT:

2.4 SYSTEM, MEMORY, AND I/O BOARDS PROBLEM ISOLATION PROCEDURES

ЙНННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН» ºCAUTION: Before carrying out any of these procedures, make sure º ºthat the FDD is empty. Performing these procedures with a floppy º ºdisk in the FDD may result in loss of data. º º ИНННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН¼

This section describes how to determine whether or not the system, memory or I/O board is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: Message Check

PROCEDURE 2: Printer Port LED Check

PROCEDURE 3: Test Program Execution

PROCEDURE 4: System Board Replacement

PROCEDURE 5: Memory Board Replacement

PROCEDURE 6: I/O Board Replacement

PROCEDURE 1

Message Check

1. Turn on the power.

2. If the system is loaded normally, go to PROCEDURE 3.

3. If the following message is displayed on the screen, press the F1 key. Execute the setup operation. (See the part 3 for details.)

**** Error in CMOS. Bad battery ****

Check system. Then, press [F1] key .....

**** Error in CMOS. Bad check sum ***

Check system. Then, press [F1] key .....

** Error in CMOS. Bad configuration **

Check system. Then, press [F1] key .....

*** Error in CMOS. Bad memory size ***

Check system. Then, press [F1] key .....

*** Error in CMOS. Bad time function **

Check system. Then, press [F1] key .....

4. If the following message is displayed on the screen, turn off the power. Wait 5 seconds or more, then turn on the power. If the following message is displayed again, go to HDD isolation procedures in section 2.6.

** BDD Load error or Bad system disk ** Insert system disk in drive

Press any key when ready .....

Check system disk in drive

Press any key when ready .....

5. If the following message is displayed on the screen, the system may not be set up correctly. Go to the system setup menu and select the appropriate system configuration. (see the part 3 for details.) If the following message is displayed again, go to PROCEDURE 5.

Video RAM error

CRTC error

6. If the following message is displayed on the screen, go to PROCEDURE 4.

CPU flag register error KBC IBF/OBF error KBC IBF error KBC self test error KBC OBF error CPU register error ROM checksum error PIT channel 2 error Cache memory verify error CMOS shutdown byte error DMA channel 0 error DMA channel 1 error DMA page register error Memory refresh error 1st 64KB memory error Error interrupt controller 1 Error interrupt controller 2 VRAM error Memory verify error at X:X found X expanded X Memory parity error at X:X found X expected X Error interrupt and stuck NMI Error interrupts and stuck NMI Error interrupts and stuck NMI

Error protect mode... Error sizing expansion memory Memory verify error at X:X:X found X expected X Memory verify error at X:X:X found X expected X Error processor exceptional interrupts... Refresh timing error Error encountered initializing hard drive First 64KB memory error LIM page register error

7. If none of the above messages are displayed and you have a printer port LED, go to PROCEDURE 2.

PROCEDURE 2

Printer Port LED Check

1. Turn off the power.

2. Plug the printer port LED into the PRT/FDD connector on the back of the unit and set the A-B-PRT switch to PRT position.

3. While watching the printer port LED, turn on the power. The printer port LED will light when the power switch is turned on.

4. Read the final LED status from left to right as a hexadecimal value.

5. If the final LED status matches any of the error status values in the table 2-3, go to PROCEDURE 4.

6. If the final LED status is 32H, go to PROCEDURE 3.

Table 2-2 Printer port LED normal status

ЪДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³Status ³ Message ³ ГДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³ 00H ³ Shutdown process and video initialization ³ ³ 01H ³ CPU test 1 ³ ³ 02H ³ KBC test 1 ³ ³ 03H ³ KBC test 2 ³ ³ 04H ³ KBC test 3 ³ ³ 05H ³ KBC test 4 ³ ³ 06H ³ LSI initialization ³ ³ 07H ³ CPU test 2 ³ ³ 08H ³ RTC initialization ³ ³ 09H ³ ROM checksum test ³ ³ 0AH ³ Video initialization ³ ³ 0BH ³ Reserved ³ ³ 0CH ³ Reserved ³ ³ 0DH ³ PIT Channel 2 test and initialization ³ ³ 0EH ³ Cache memory test ³ ³ 0FH ³ CMOS RAM test ³ ³ 10H ³ DMA Channel 0 test ³ АДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

Table 2-2 Printer port LED normal status (continued)

ЪДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³Status³Message ³ ГДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД´ ³ 11H ³DMA channel 1 test ³ ³ 12H ³DMA page register test ³ ³ 13H ³Memory refresh test ³ ³ 14H ³First 64KB memory test ³ ³ 15H ³Interrupt vector set ³ ³ 16H ³PIC 1 mask register test ³ ³ 17H ³PIC 2 mask register test ³ ³ 18H ³CMOS battery test ³ ³ 19H ³CMOS checksum test ³ ³ 1AH ³Keyboard initialization 1 ³ ³ 1BH ³VRAM test ³ ³ 1CH ³Video I/O initialization ³ ³ 1DH ³System memory size set ³ ³ 1EH ³System memory size check ³ ³ 1FH ³System memory and extra memory test ³ ³ 20H ³PIC test ³ ³ 21H ³NMI and parity test ³ ³ 22H ³Interrupt process test ³ ³ 23H ³Protect mode test ³ ³ 24H ³Extended memory size check ³ ³ 25H ³Extended memory test ³ ³ 26H ³Protect mode exception processing test³ ³ 27H ³ROM copy to RAM ³ ³ 28H ³CRT type check ³ ³ 29H ³PIT interrupt check ³ ³ 2AH ³Hardware interrupt vector set ³ ³ 2BH ³Keyboard initialization 2 ³ ³ 2CH ³FDD initialization ³ ³ 2DH ³510/Printer initialization ³ ³ 2EH ³HDD initialization ³ ³ 2FH ³Option ROM check ³ ³ 30H ³Timer check ³ ³ 31H ³NDP initialization ³ ³ 32H ³Prepare for boot ³ АДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

Table 2-3 Printer port LED error status

ЪДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДВДДДДДДДД¿ ³Status³Error message ³Process ³ ГДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЕДДДДДДДД´ ³ 81H ³CPU flag register error ³halt ³ ³ 82H ³KBC IBF/OBF error ³halt ³ ³ 83H ³KBC IBF error ³halt ³ ³ 84H ³KBC self test error ³halt ³ ³ 85H ³KBC OBF error ³halt ³ ³ 87H ³CPU register error ³halt ³ ³ 89H ³ROM checksum error ³halt ³ ³ BDH ³PIT channel 2 error ³halt ³ ³ 8EH ³Cache memory verify error ³halt ³ ³ 8FH ³CMOS shutdown byte error ³halt ³ ³ 90H ³DMA channel 0 error ³halt ³

³ 91H ³DMA channel 1 error ³halt ³ ³ 92H ³DMA page register error ³halt ³ ³ 93H ³Memory refresh error ³halt ³ ³ 94H ³1st 64KB memory error ³halt ³ ³ 96H ³Error interrupt controller 1 ³halt ³ ³ 97H ³Error interrupt controller 2 ³Continue³ ³ 9BH ³VRAM error ³halt ³ ³ 9FH ³Memory verify error at X:X ³ ³ ³ ³found X expanded X ³Continue³ ³ ³Memory parity error at X:X:X ³ ³ ³ ³found X expected X ³Continue³ ³ A0H ³Error interrupt and stuck NMI ³Continue³ ³ A1H ³Error interrupts and stuck NMI ³Continue³ ³ A2H ³Error interrupts and stuck NMI ³Continue³ ³ A3H ³Error protect mode... ³Continue³ ³ A4H ³Error sizing expansion memory ³Continue³ ³ ASH ³Memory verify error at X:X:X ³ ³ ³ ³found X expected X ³Continue³ ³ ³Memory parity error at X:X:X ³ ³ ³ ³found X expected ³Continue³ ³ A6H ³Error processor exceptional interrupts... ³Continue³ ³ A9H ³Refresh timing error ³Continue³ ³ AEH ³Error encountered initializing ³ ³ ³ ³hard drive ³Continue³ ³ CEH ³Cache memory address error ³halt ³ ³ D4H ³First 64KB memory error ³halt ³ ³ EFH ³LIM page register error ³Continue³ АДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДБДДДДДДДДЩ

PROCEDURE 3

Test Program Execution

1. Execute the following tests on the Diagnostic Test Menu. (Refer to part 3 Test and Diagnostics.)

1. System test

2. Memory test

3. Keyboard test

4. Display test

5. Floppy disk test

6. Printer test

7. ASYNC test

8. Hard disk test

9. Real timer test

2. If an error is detected during the system test, ASYNC (SERIAL B) test, or real timer test, go to PROCEDURE 4.

3. If an error is detected during the memory test, go to PROCEDURE 5.

4. If an error is detected during the ASYNC test (SERIAL A) or printer test, go to PROCEDURE 6.

5. If an error is detected during the floppy disk test, go to FDD problem isolation procedures in section 2.5.

6. If an error is detected during the hard disk test, go to HDD

problem isolation procedures in section 2.6.

7. If an error is detected during the keyboard test, go to keyboard problem isolation procedures in section 2.7.

8. If an error is detected during the display test, go to display problem isolation procedures in section 2.8.

PROCEDURE 4

System Board Replacement

1. Replace the system board. (Refer to section 4.13.)

2. If normal operation is restored after replacing the system board, the original system board is probably defective.

3. If normal operation is not restored, another FRU is probably defective. The defective unit must be isolated by test and diagnostics program and replaced.

PROCEDURE 5

Memory Board Replacement

1. Replace the memory board. (Refer to section 4.11.)

2. If normal operation is restored after replacing the memory board, the original memory board is probably defective.

3. If normal operation is not restored, the system board is probably defective. Go to PROCEDURE 4.

PROCEDURE 6

I/O Board Replacement

1. Replace the I/O board. (Refer to section 4.10.)

2. If normal operation is restored after replacing the I/O board, the original I/O board is probably defective.

3. If normal operation is not restored, the system board is probably defective. Go to PROCEDURE 4.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.5, FLOPPY DISK DRIVE PROBLEM ISOLATION PROCEDURES DOC_ID:2.5 T5200 LANG:ALL

TEXT:

2.5 FLOPPY DISK DRIVE PROBLEM ISOLATION PROCEDURES

This section describes how to determine whether or not the floppy disk drive is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: Test and Diagnostics Program Loading Check

PROCEDURE 2: Message Check

PROCEDURE 3: Head Cleaning

PROCEDURE 4: FDD Test Execution

PROCEDURE 5: FDD Connector Check

PROCEDURE 6: New FDD Connection

PROCEDURE 1

Test and Diagnostics Program Loading Check

1. Turn off the power.

2. Insert the diagnostics disk into the FDD.

3. Turn on the power.

4. If loading starts normally, go to PROCEDURE 3. (See section 3.2 to determine if loading has started normally.)

5. If loading has not started normally, go to PROCEDURE 2.

PROCEDURE 2

Message Check

1. When the power switch is turned on after the MS-DOS system disk is inserted into the FDD, message (a), (b), or (c) shown below may appear.

(a) *** FDD A is not installed ***

(b) Non-System disk or disk error Replace and press any key when ready

(c) ** FDD load error or Bad system disk ** Insert system disk in drive

Press any key when ready .....

2. If message (a) is displayed, check that the A-B-PRT switch is set to PRT. If it is not set to PRT, set it to PRT. If it is set to PRT, go

to PROCEDURE 5.

3. If message (b) or (c) is displayed, the contents of the floppy disk is damaged, or a disk other than the MS-DOS system disk has been inserted into the FDD. Insert a new MS-DOS system disk into the FDD. If loading completes, go to PROCEDURE 4. If loading does not complete, go to PROCEDURE 3.

4. If none of the above messages appears, go to PROCEDURE 5.

PROCEDURE 3

Head Cleaning

1. Turn off the power.

2. Insert the cleaning disk into the FDD.

3. Turn on the power.

4. If normal operation is restored after cleaning the head, go to PROCEDURE 4.

5. If normal operation is not restored, go to PROCEDURE 5.

PROCEDURE 4

FDD Test Execution

1. Insert the diagnostics disk into the FDD. Then type a:testce52 and press Enter key.

2. Remove the diagnostics disk from the FDD, then insert the formatted work disk in.

3. Run the floppy disk test as indicated on the diagnostic test menu.

4. If an error is generated during the floppy disk test, an error code and status will be displayed. The error codes are described in table 2-4. Go to PROCEDURE 6.

5. If no error is generated, the FDD is normal.

Table 2-4 FDD error code

ЪДДДДВДДДДДДДДДДДДДДДДДДДДДДД¿ ³Code³ Status ³ ГДДДДЕДДДДДДДДДДДДДДДДДДДДДДД´ ³ 01 ³ Bad Command ³ ³ 02 ³ Address Mark Not Found³ ³ 03 ³ Write Protected ³ ³ 04 ³ Record Not Found ³ ³ 06 ³ Media Removed ³ ³ 08 ³ DMA Overrun Error ³ ³ 09 ³ DMA Boundary Error ³ ³ 10 ³ CRC Error ³

³ 20 ³ FDC Error ³ ³ 40 ³ Seek Error ³ ³ 60 ³ FDD Not Drive ³ ³ 80 ³ Time Out Error ³ ³ EE ³ Write Buffer Error ³ АДДДДБДДДДДДДДДДДДДДДДДДДДДДДЩ

PROCEDURE 5

FDD Connector Check

1. Turn off the power, then unplug the AC power cord.

2. Remove the top cover. (Refer to section 4.3.)

3. Check that the FDD connection (PJ14) is secure.

4. If the FDD cable is securely connected to the system board, go to PROCEDURE 6.

5. If the FDD cable is not securely connected to the system board, secure the connection.

PROCEDURE 6

New FDD Connection

1. Turn off the power.

2. Remove the FDD. (Refer to section 4.7.)

3. Connect a new FDD to the FDD connector without installing the new FDD. Then connect all of the FRUs removed during FDD removal to their corresponding connectors without installing the FRUs.

4. Turn on the power.

5. If normal operation is restored, the original FDD is probably defective. Reassemble the system.

6. If normal operation is not restored, the system board is probably defective. Refer to section 2.4.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.6, HARD DISK DRIVE PROBLEM ISOLATION PROCEDURES DOC_ID:2.6 T5200 LANG:ALL TEXT:

2.6 HARD DISK DRIVE PROBLEM ISOLATION PROCEDURES

This section describes how to determine whether or not the hard disk drive is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: HDD Indicator Check

PROCEDURE 2: Message Check

PROCEDURE 3: Format Execution

PROCEDURE 4: Hard Disk Test Execution

PROCEDURE 5: Connector Check

PROCEDURE 6: HDD Jumper Straps Check

PROCEDURE 7: New HDD Connection

PROCEDURE 1

HDD Indicator Check

1. Turn off the power.

2. If there is a floppy disk in the FDD, take it out.

3. Wait 5 seconds or more after turning off the power, then turn on the power.

4. If the HDD indicator blinks briefly, then goes out, go to PROCEDURE

2. If the HDD indicator continues blinking, go to PROCEDURE 4.

5. If the HDD indicator does not light at all, go to PROCEDURE 5.

PROCEDURE 2

Message Check

1. If the operating system is loaded normally, go to PROCEDURE 4.

2. If one of the following message is displayed on the screen, go to PROCEDURE 3.

** HDD Load error or Bad system disk ** Insert system disk in drive.

Press any key when ready .....

Check system disk in drive

Press any key when ready .....

PROCEDURE 3

Format Execution

ЙННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН» º CAUTION: The contents of the hard disk will be erased when the º º FORMAT command is run. Before running this test, transfer the º º contents of the hard disk to floppy disks. This can be done withº º the MS-DOS BACKUP command. (See the MS-DOS Manual for details.) º ИННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН¼

1. Insert the MS-DOS system disk into the FDD.

2. Make partition of the hard disk by entering the FDISK command. (See the MS-DOS Manual for details.)

3. Format the hard disk by entering the FORMAT command. (See the MS-DOS Manual for details.) At this time use /S switch to transfer the system program.

4. If normal operation is restored, the HDD is normal.

5. If normal operation is not restored, go to PROCEDURE 6.

PROCEDURE 4

Hard Disk Test Execution

ЙНННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН» º CAUTION: The contents of the hard disk will be erased when the º º test program is run. Before running this test, transfer the º º contents of the hard disk to floppy disks. This can be done with º º the MS-DOS BACKUP command. (See the MS-DOS Manual for details.) º º ИНННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННННН¼

1. Insert the diagnostics disk into the FDD. Then type a:testce52 and press Enter key and run the hard disk test as indicated on the diagnostic test menu.

2. If an error is detected during the hard disk test, an error code and status will be displayed; go to PROCEDURE 6. The error codes are described in table 25.

3. If no error is generated, the HDD is normal. Enter the MS-DOS FDISK command to make partition of the hard disk. Then enter the MS-DOS FORMAT command. (See the MS-DOS Manual for details.)

Table 2-5 HDD error code

ЪДДДДДДДВДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ Code ³ Status ³ ГДДДДДДДЕДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД³ ³ 01 ³ Bad command error ³ ³ 02 ³ Bad address mark ³ ³ 04 ³ Record not found ³ ³ 05 ³ HDC not reset ³ ³ 07 ³ Drive not initialize ³ ³ 09 ³ DMA boundary error ³ ³ 0A ³ Bad sector error ³

³ 0B ³ Bad track error ³ ³ 10 ³ ECC error ³ ³ 11 ³ ECC recover enable ³ ³ 20 ³ HDC error ³ ³ 40 ³ Seek error ³ ³ 80 ³ Time out error ³ ³ AA ³ Drive not ready ³ ³ BB ³ Undefined ³ ³ CC ³ Write fault ³ ³ E0 ³ Status error ³ ³ F0 ³ Not sense error ( HW.code=FF) ³ АДДДДДДДБДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

PROCEDURE 5

Connector Check

1. Turn off the power, then unplug the AC power cord.

2. Remove the top cover. (Refer to section 4.8)

3. Check that the HDC signal cable (PJ9) and HDD power cable (PJ5) are secure.

4. If both cables are securely connected to the system board, go to PROCEDURE 6.

5. If the cables are not securely connected, secure them.

PROCEDURE 6

HDD Jumper Straps Check

1. Remove the disk support (Refer to section 4.5.).

2. Check that the jumper straps are set correctly as shown in figure 2-2 and described in table 2-6.

3. If the jumper straps are set correctly, go to PROCEDURE 7.

4. If the jumper straps are not set correctly, set them correctly.

Table 2-6 HDD bumper straps functions

ЪДДДДДДДДДДДДДДДДВДДДДДДДДДДДДДДДДДДДД¿ ³ Signal ³ Status ³ ГДДДДДДДДДДДДДДДДЕДДДДДДДДДДДДДДДДДДДД³ ³ HSP ³ Open ³ ³ CD ³ Short ³ ³ DSP ³ Open ³ ³ ACT ³ Short ³ АДДДДДДДДДДДДДДДДБДДДДДДДДДДДДДДДДДДДДЩ

<fig id=MMS\5200\52002_32.TIF>Figure 2-2</fig> HDD jumper straps

PROCEDURE 7

New HDD Connection

1. Turn off the power.

2. Remove the HDD. (Refer to section 4.6.)

3. Connect a new HDD to the system board without installing the HDD. Then connect all the FRUs removed during HDD removal without installing the FRUs.

4. If normal operation is restored, the original HDD is probably defective. Reassemble the system.

5. If normal operation is not restored, the system board is probably defective. Refer to section 2.4.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.7, KEYBOARD PROBLEM ISOLATION PROCEDURES DOC_ID:2.7 T5200 LANG:ALL TEXT:

2.7 KEYBOARD PROBLEM ISOLATION PROCEDURES

This section describes how to determine whether or not the keyboard is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: Input Check

PROCEDURE 2: Keyboard Test Execution

PROCEDURE 3: Connector Check

PROCEDURE 4: New Keyboard Connection

PROCEDURE 1

Input Check

1. Insert an MS-DOS system disk into the FDD.

2. Turn on the power.

3. When the prompt appears on the screen, press any of the white keys on the keyboard (any character or the space bar).

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿

³ CAUTION: Do not type an MS-DOS acceptable command such as ³ ³ del and format. Such operation may erase your important ³ ³ program or data. ³ АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

If the character you press appears on the screen, press Enter key. Go to PROCEDURE 2.

4. If the character does not appear on the screen, go to PROCEDURE 3.

Toshiba Personal Computer MS-DOS Version X.XX /(RXXXXX)

(C) Copyright Toshiba Corporation 1983,1986 (C) Copyright Microsoft Corporation 1981,1986

Current date is XXX X_XX_19XX Enter new date ( mm-dd-yy): _ Current time is X:XX:XX,XX Enter new time: _

COMMMAND Version X.XX

A> abcdefghijilmnopqrst ...........

PROCEDURE 2

Keyboard Test Execution

1. Insert the diagnostics disk into the FDD. Then type a:testce52 and press Enter key and run the keyboard test as indicated on the diagnostic test menu.

2. If an error is detected during the test, go to PROCEDURE 3.

3. If no error is detected during the test, the keyboard is normal.

PROCEDURE 3

Connector Check

1. Turn off the power, then disconnect the AC power cord.

2. Lift up the top cover. (Refer to section 4.3.)

3. Lift up the keyboard and check that the keyboard cable (PJ1) is securely connected to the system board. If it is securely connected, go to PROCEDURE 4.

4. If it is not securely connected, secure it.

PROCEDURE 4

New Keyboard Connection

1. Turn off the power, then unplug the AC power cord.

2. Remove the keyboard. (Refer to section 4.2.)

3. Connect a new keyboard to the system board without installing it.

4. If normal operation is restored after connecting the new keyboard, the original keyboard is probably defective. Install the new keyboard.

5. If normal operation is not restored, the system board is probably defective. Refer to section 2.4.

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:2 PROBLEM ISOLATION PROCEDURES SECT:2.8, PLASMA DISPLAY PROBLEM ISOLATION PROCEDURES DOC_ID:2.8 T5200 LANG:ALL TEXT:

2.8 PLASMA DISPLAY PROBLEM ISOLATION PROCEDURES

This section describes how to determine whether or not the plasma display is defective. Start with PROCEDURE 1 and continue with other procedures as instructed. The procedures described in this section are:

PROCEDURE 1: Display Check

PROCEDURE 2: Display Test Execution

PROCEDURE 3: PDP Connector Check

PROCEDURE 4: New PDP Connection

PROCEDURE 1

Display Check

1. Turn off the power.

2. Wait 5 seconds or more and turn on the power. After turning on the power, the following message should be displayed on the upper left-hand corner of the screen:

MEMORY TEST XXXXKB

3. If the above message appears, go to PROCEDURE 2.

4. If the above message does not appear:

(a) Check that the contrast is correctly adjusted.

(b) Check that CRT indicator is light. If CRT indicator is light,

hold the Ctrl key, then press the Home key.

After performing (a) and (b), reperform steps 1 and 2. If the message in step 2 still fails to appear, go to PROCEDURE 3.

PROCEDURE 2

Display Test Execution

1. Insert the diagnostics disk into the FDD. Then type a:testce52 and press Enter key and run the display test as indicated on the diagnostic test menu.

2. If an error is detected during the display test, the system board is probably defective. Refer to section 2.4.

3. If no error is generated, the plasma display is normal.

PROCEDURE 3

PDP Connector Check

ЪДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДД¿ ³ WARNING: Dangerous high voltage is supplied to the plasma³ ³ display panel. Pay enough attention on handling. ³ АДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДДЩ

1. Turn off the power, then unplug the AC power cord.

2. Remove the PDP without disconnecting the cables (Refer to section

4.5.) and check that the cables are securely connected to the plasma display board (Refer to figure 2-3.)

3. If the cable is securely connected, go to PROCEDURE 4.

4. If the cable is not securely connected, secure it.

<fig id=MMS\5200\52002_42.TIF>Figure 2-3</fig> PDP connector check

PROCEDURE 4

New PDP Connection

1. Connect a new PDP without installing it.

2. If normal operation is restored after connecting the new PDP, the original PDP is probably defective. Reassemble the system.

3. If normal operation is not restored, the system board is probably defective. Refer to section 2.4.

File No.: 960-011

~~ DOC:MAINTENANCE MANUAL MODEL:T5200 MODEL:T5200C CHAP:3 TESTS AND DIAGNOSTICS SECT:3.1, GENERAL DOC_ID:3.1 T5200 LANG:ALL TEXT:

3.1 GENERAL

This section explains test and diagnostics programs. That checks the functions of all hardware modules of the T5200. There are 19 programs grouped into two modules: the service program module (DIAGNOSTICS MENU) and test program module (DIAGNOSTIC TEST MENU). The service program module is composed of 8 tasks:

1. HARD DISK FORMAT

2. SEEK TO LANDING ZONE (HDD)

3. HEAD CLEANING

4. LOG UTILITIES

5. RUNNING TEST

6. FDD UTILITIES

7. SYSTEM CONFIGURATION

8. SET UP

The test program module is composed of 11 tests:

1. SYSTEM TEST

2. MEMORY TEST

3. KEYBOARD TEST

4. DISPLAY TEST

5. FLOPPY DISK TEST

6. PRINTER TEST

7. ASYNC TEST

8. HARD DISK TEST

9. REAL TIMER TEST

10. NDP TEST

11. EXPANSION TEST

The following items are necessary for carrying out the test and diagnostic programs.

1. T5200 diagnostics disk

2. MS-DOS system disk

3. Formatted work disk (For FDD test)

4. Cleaning disk kit (For read cleaning)

5. Printer wraparound connector (For printer wraparound test)

6. RS-232-C wraparound connector (For ASYNC wraparound test)

Service personnel can use these programs to isolate problems by selecting the appropriate program and operation procedures described in section 3.2.

Toshiba T5200, T5200C Maintenance Manual

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