User Guide
Page 2
...how to explode. Each of the wrong battery can cause the battery to perform hardware service maintenance for the Toshiba Personal Computer Libretto 50CT/70CT. Improper repair of a hazard that relates to fasten screws securely with the correct screwdriver. Installation of...Toshiba requires service technicians and authorized dealers or service providers to . If a screw is not fully fastened, it could loosen and create a short circuit, which could result in the field isolate and replace faulty Field Replaceable Units (FRUs). SAFETY PRECAUTIONS Four types of a hazard that is specific...
...how to explode. Each of the wrong battery can cause the battery to perform hardware service maintenance for the Toshiba Personal Computer Libretto 50CT/70CT. Improper repair of a hazard that relates to fasten screws securely with the correct screwdriver. Installation of...Toshiba requires service technicians and authorized dealers or service providers to . If a screw is not fully fastened, it could loosen and create a short circuit, which could result in the field isolate and replace faulty Field Replaceable Units (FRUs). SAFETY PRECAUTIONS Four types of a hazard that is specific...
User Guide
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... computer 1-3 Figure 1-2 System unit configuration 1-3 Figure 1-3 System unit block diagram 1-4 Figure 1-4 3.5-inch FDD 1-7 Figure 1-5 2.5-inch HDD 1-8 Figure 1-6 Keyboard...1-9 Figure 1-7 LCD module 1-10 Tables Table 1-1 FDD specifications 1-7 Table 1-2 HDD specifications 1-8 Table 1-3 Keyboard specifications 1-9 Table 1-4 LCD specifications 1-10 Libretto 50CT/70CT Maintenance Manual 1-iii
... computer 1-3 Figure 1-2 System unit configuration 1-3 Figure 1-3 System unit block diagram 1-4 Figure 1-4 3.5-inch FDD 1-7 Figure 1-5 2.5-inch HDD 1-8 Figure 1-6 Keyboard...1-9 Figure 1-7 LCD module 1-10 Tables Table 1-1 FDD specifications 1-7 Table 1-2 HDD specifications 1-8 Table 1-3 Keyboard specifications 1-9 Table 1-4 LCD specifications 1-10 Libretto 50CT/70CT Maintenance Manual 1-iii
User Guide
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Table 1-5 FL inverter board specifications 1-11 Table 1-6 Power supply board output rating 1-12 Table 1-7 Battery specifications 1-13 Table 1-8 Time required for quick charge 1-14 Table 1-9 RTC battery charging/data preservation time 1-14 1-iv Libretto 50CT/70CT Maintenance Manual
Table 1-5 FL inverter board specifications 1-11 Table 1-6 Power supply board output rating 1-12 Table 1-7 Battery specifications 1-13 Table 1-8 Time required for quick charge 1-14 Table 1-9 RTC battery charging/data preservation time 1-14 1-iv Libretto 50CT/70CT Maintenance Manual
User Guide
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...1 Hardware Overview 1.3 3.5-inch External FDD (Option) The 3.5-inch external FDD is shown in Table 1-1. Figure 1-4 3.5-inch FDD The specifications for the FDD are listed in Figure 1-4. The FDD can be connected to track Average Head settling time Recording track density (tpi) ... 1,000 720 2 80 3 3 181 181 15 15 135 135 500 250 300 300 Modified Frequency Modulation (MFM) 1-8 Libretto 50CT/70CT Maintenance Manual Table 1-1 FDD specifications Item Storage capacity (KB) Unformatted Formatted Number of heads Number of cylinders Access time (ms) Track to the PC card slot...
...1 Hardware Overview 1.3 3.5-inch External FDD (Option) The 3.5-inch external FDD is shown in Table 1-1. Figure 1-4 3.5-inch FDD The specifications for the FDD are listed in Figure 1-4. The FDD can be connected to track Average Head settling time Recording track density (tpi) ... 1,000 720 2 80 3 3 181 181 15 15 135 135 500 250 300 300 Modified Frequency Modulation (MFM) 1-8 Libretto 50CT/70CT Maintenance Manual Table 1-1 FDD specifications Item Storage capacity (KB) Unformatted Formatted Number of heads Number of cylinders Access time (ms) Track to the PC card slot...
User Guide
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Table 1-2 HDD specifications Libretto 50CT: 815MB HDD Item Specifications Formatted capacity (MB) 815 Number of disks 1 Logical heads 2 Bytes per sector 512 Rotation speed (rpm) 4,000 Recording method 8-9 RLL *Libretto 70CT: 815MB HDD Item Formatted capacity (GB) Number of disks Logical heads Bytes per sector Rotation speed (rpm) Recording method Specifications 1.58 1 2 512 4,000 8-9 RLL 1-10 Libretto 50CT/70CT Maintenance Manual 1.4 2.5-inch HDD 1 Hardware Overview The specifications for the HDDs are listed in Table 1-2.
Table 1-2 HDD specifications Libretto 50CT: 815MB HDD Item Specifications Formatted capacity (MB) 815 Number of disks 1 Logical heads 2 Bytes per sector 512 Rotation speed (rpm) 4,000 Recording method 8-9 RLL *Libretto 70CT: 815MB HDD Item Formatted capacity (GB) Number of disks Logical heads Bytes per sector Rotation speed (rpm) Recording method Specifications 1.58 1 2 512 4,000 8-9 RLL 1-10 Libretto 50CT/70CT Maintenance Manual 1.4 2.5-inch HDD 1 Hardware Overview The specifications for the HDDs are listed in Table 1-2.
User Guide
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... the keyboard are listed in Figure 1-6. key (European) keyboard is shown in Table 1-3. See Appendix D for a mouse. Table 1-3 Keyboard specifications Item Input method Pitch Thickness Specifications Pantograph (Function keys use cylinders) 15mm 6mm Libretto 50CT/70CT Maintenance Manual 1-11 The AccuPoint, located on the right of the display panel, provides convenient control of the...
... the keyboard are listed in Figure 1-6. key (European) keyboard is shown in Table 1-3. See Appendix D for a mouse. Table 1-3 Keyboard specifications Item Input method Pitch Thickness Specifications Pantograph (Function keys use cylinders) 15mm 6mm Libretto 50CT/70CT Maintenance Manual 1-11 The AccuPoint, located on the right of the display panel, provides convenient control of the...
User Guide
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... to 16M colors at power on are listed in Figure 1-7. Figure 1-7 LCD module The specifications for the LCD are : Bright Semi-bright Universal AC Adapter connected 4.6 mA 2.8 mA Universal AC Adapter not connected 4.0 mA 2.4 mA 1-12 Libretto 50CT/70CT Maintenance Manual The LCD module is shown in Table 1-4. 1.6 LCD Panel 1 Hardware...
... to 16M colors at power on are listed in Figure 1-7. Figure 1-7 LCD module The specifications for the LCD are : Bright Semi-bright Universal AC Adapter connected 4.6 mA 2.8 mA Universal AC Adapter not connected 4.0 mA 2.4 mA 1-12 Libretto 50CT/70CT Maintenance Manual The LCD module is shown in Table 1-4. 1.6 LCD Panel 1 Hardware...
User Guide
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... : Bright Semi-bright Universal AC Adapter connected 4.6 mA 2.8 mA Universal AC Adapter not connected 4.0 mA 2.4 mA Libretto 50CT/70CT Maintenance Manual 1-13 Table 1-5 FL inverter board specifications Input Output Item Voltage Power Voltage Current (V) (W) (Vrms) (mA) Specifications 5 2.2 800 (4.6/4.0/2.8/2.4)* (Bright/Semi-bright) *NOTE: The FL currents at power on are listed in Table 1-5.
... : Bright Semi-bright Universal AC Adapter connected 4.6 mA 2.8 mA Universal AC Adapter not connected 4.0 mA 2.4 mA Libretto 50CT/70CT Maintenance Manual 1-13 Table 1-5 FL inverter board specifications Input Output Item Voltage Power Voltage Current (V) (W) (Vrms) (mA) Specifications 5 2.2 800 (4.6/4.0/2.8/2.4)* (Bright/Semi-bright) *NOTE: The FL currents at power on are listed in Table 1-5.
User Guide
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...color shows the status of batteries: q Main battery pack q RTC battery Battery specifications are connected to the computer. The system charges the battery using quick charge or trickle charge. Libretto 50CT/70CT Maintenance Manual 1-15 q Quick Battery Charge The battery quick charges when the... Universal AC Adapter is connected and the system is not connected. Table 1-7 Battery specifications Battery name Main battery pack RTC battery...
...color shows the status of batteries: q Main battery pack q RTC battery Battery specifications are connected to the computer. The system charges the battery using quick charge or trickle charge. Libretto 50CT/70CT Maintenance Manual 1-15 q Quick Battery Charge The battery quick charges when the... Universal AC Adapter is connected and the system is not connected. Table 1-7 Battery specifications Battery name Main battery pack RTC battery...
User Guide
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...install a battery pack and connect an AC adapter. q DC power supplied through AC adapter Error code Meaning 01h AC adapter voltage is manufactured specifically for half second Error codes begin with the least significant digit. Check 1 If the DC IN icon flashes orange, go to Procedure 4....2. The blink pattern indicates an error as shown below . CAUTION: Use only an AC adapter that is over the limit (16.5 V) 2-6 Libretto 50CT/70CT Maintenance Manual If you use a different AC adapter, the computer's power supply may malfunction or a fuse on the system board may be blown...
...install a battery pack and connect an AC adapter. q DC power supplied through AC adapter Error code Meaning 01h AC adapter voltage is manufactured specifically for half second Error codes begin with the least significant digit. Check 1 If the DC IN icon flashes orange, go to Procedure 4....2. The blink pattern indicates an error as shown below . CAUTION: Use only an AC adapter that is over the limit (16.5 V) 2-6 Libretto 50CT/70CT Maintenance Manual If you use a different AC adapter, the computer's power supply may malfunction or a fuse on the system board may be blown...
User Guide
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...N. NOTES: 1. For example, B, to go directly to accept the changes you access SETUP, the current configuration displays. 1. Press End to a specific group by pressing the first letter (highlighted) of the group's name. SETUP asks you to confirm that you don't want to save your changes....the two columns. To show the factory preset configuration, press Home. 2. To accept the default settings, press End and then press Y. 3-52 Libretto 50CT/70CT Maintenance Manual Press ← and → to reboot. 2. 3.24 SETUP 3 Tests and Diagnostics 3.24.3 Moving Within the SETUP Menu ...
...N. NOTES: 1. For example, B, to go directly to accept the changes you access SETUP, the current configuration displays. 1. Press End to a specific group by pressing the first letter (highlighted) of the group's name. SETUP asks you to confirm that you don't want to save your changes....the two columns. To show the factory preset configuration, press Home. 2. To accept the default settings, press End and then press Y. 3-52 Libretto 50CT/70CT Maintenance Manual Press ← and → to reboot. 2. 3.24 SETUP 3 Tests and Diagnostics 3.24.3 Moving Within the SETUP Menu ...
User Guide
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... smoke, or fire. 4. Before removing an FRU or other injury: 1. If you change a component, be careful not to the component have different specifications, they may be incompatible with wet or damp hands. 4. Also, do not disassemble individual components during first-level maintenance. When assembling the computer make sure... can cause short-circuit, fire, or other internal damage. 3. To avoid the risk of electrical shock even when the computer is authorized by Toshiba or compatible with the computer or one recommended by Toshiba. 4-2 Libretto 50CT/70CT Maintenance Manual
... smoke, or fire. 4. Before removing an FRU or other injury: 1. If you change a component, be careful not to the component have different specifications, they may be incompatible with wet or damp hands. 4. Also, do not disassemble individual components during first-level maintenance. When assembling the computer make sure... can cause short-circuit, fire, or other internal damage. 3. To avoid the risk of electrical shock even when the computer is authorized by Toshiba or compatible with the computer or one recommended by Toshiba. 4-2 Libretto 50CT/70CT Maintenance Manual
User Guide
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Libretto 50CT/70CT Maintenance Manual A-3 Be sure to freeze, lose their elasticity or otherwise suffer damage. Cold can cause the liquid crystals to wear a wrist or ankle ground when handling the module. 7. Do not store the module at temperatures below specifications. Appendix Appendix A Handling the LCD Module 6. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. 8. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge.
Libretto 50CT/70CT Maintenance Manual A-3 Be sure to freeze, lose their elasticity or otherwise suffer damage. Cold can cause the liquid crystals to wear a wrist or ankle ground when handling the module. 7. Do not store the module at temperatures below specifications. Appendix Appendix A Handling the LCD Module 6. Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. 8. CMOS-LSI circuits are used in the module, so guard against damage from electrostatic discharge.
Memory Installation Guide
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...well seated in the system's expansion slot. Firmly press down , ensure that any other cables from the system. B SPEED POWER PERFORMANCE The Toshiba Libretto 50CT and 70CT come standard with a small Phillips head screwdriver. Turn the computer off and disconnect the AC power supply and any malfunction should ... fitness for which fail solely because their one of our products in writing by the edge closest to make the final determination as specifically stated in its recommended environment, Viking, at the top left corner of the use this screw with the OEM machines for a ...
...well seated in the system's expansion slot. Firmly press down , ensure that any other cables from the system. B SPEED POWER PERFORMANCE The Toshiba Libretto 50CT and 70CT come standard with a small Phillips head screwdriver. Turn the computer off and disconnect the AC power supply and any malfunction should ... fitness for which fail solely because their one of our products in writing by the edge closest to make the final determination as specifically stated in its recommended environment, Viking, at the top left corner of the use this screw with the OEM machines for a ...