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Reseat the device connectors. If the symptom remains, replace the device or the system board. If needed, adjust the contrast control to clearly distinguish the shades of the icon. If a device that is not installed appears in a dark shade (for example, FDD-2 appears in a dark shade when nosecond FDD is installed), do the following: 1. Replace the first device in the configuration, such as an FDD-1, an HDD-1, or a PCMCIA-1. 2. If the problem remains, replace the system board. The PCMCIA-1, Parallel, and Serial icons are always displayed in a dark shade because the icons represent subsystems of the system board and not the attachment of the devices. The FDD-1, HDD-1, or PCMCIA-1 icons represent the first drive in the system configuration for each type of device. Similarly, the FDD-2 or PCMCIA-2 icons represent the 374 IBM Mobile Systems - ThinkPad HMM Volume 3 second drive, usually attached through a port replicator or an expansion unit. The HDD-2 icon represents the hard disk drive in the UltraBay. The HDD-3 and HDD-4 icons represent the hard disk drive, attached through an expansion unit. Password Combinations (POP, HDP, PAP) When the power-on password (POP), hard disk password (HDP), and supervisor password (PAP) are used, the following situations may occur: . When POP is the same as HDP-1 or HDP-2 The POP prompt appears, but one of the HDP prompts does not appear. . When POP is not the same as HDP-1 and HDP-2 The POP, HDP-1, and HDP-2 prompts all appear. . When PAP is used with HDP-1 or HDP-2 When PAP is used, HDP-1 or HDP-2 are enabled automatically, but no HDP prompt appears. HDP-1 and HDP-2 are set the same as PAP. How to Run a Low-Level Format Do the following to format the hard disk. Attention: Make sure the address of the drive to be formatted is correct. This procedure erases all information on the disk. 1. Power-off the computer. 2. Insert the ThinkPad Hardware Maintenance Diskette Version 1.20 into diskette drive A and power-on the computer. 3. Select Format the hard disk from the main menu. 4. Select the drive from the menu. 5. Follow the instructions on the screen. PC Test Card LED The green LED on the PC test card turns on when the PCMCIA test is running. If the LED does not turn on, check that the card is installed correctly by reseating the card. If it still does not turn on after it is reseated, try using another slot for the test. If the LED still does not turn on and the test fails, replace the FRU shown by the diagnostic error code. ThinkPad 760 (9546, 9547) 375 Fn Key Combinations The following table shows the Fn key and function key combinations and their corresponding functions. The Fn key works independently from the operating system. The operating system obtains the status through the system management interface to control the system. Fn + Description F1 Reserved F2 Fuel-Gauge display on or off F3 Standby mode invocation F4 Suspend mode invocation F5 Reserved F6 Reserved F7 LCD or CRT display F8 Reserved F9 Reserved F10 Reserved F11 Power management mode (toggling between high power, intelligent, and economy) F12 Hibernation invocation 376 IBM Mobile Systems - ThinkPad HMM Volume 3 Product Overview (760) The following table shows an overview of the system features: Model 760C or 760CD Feature Description Processor . Intel Pentium 90 MHz with 256KB L2 Cache . Intel Pentium 120 MHz with 256KB L2 Cache Bus architecture . AT bus . VESA local bus for video subsystem Memory (standard) 8MB (on the system board) Memory (option) . 4MB, 8MB, 16MB, DIMM (max. 40MB) . DIMM adapter CMOS RAM 114 bytes VGA video . 12.1-inch, 64K colors, 800.600 pixel TFT color LCD . 10.4-inch, 64K colors, 800.600 pixel TFT color LCD Diskette drive (removable) . 720KB, 1.2MB, 1.44MB, 2.88MB (4-mode), 3.5-inch . 720KB, 1.2MB, 1.44MB (3-mode), 3.5-inch Hard disk drive (removable) . 760C – 360MB, 2.5-inch – 720MB, 2.5-inch . 760CD – 810MB, 2.5-inch – 1200MB, 2.5-inch Enhanced video card . 760CD – Video accelerator – Video capture and overlay – Video composite in/out – MPEG hardware decoding – MPEG2 CD-ROM (removable) . 760CD – 5-inch, quadruple speed, IDE interface DSP card . Audio function . Fax/modem function . Telephony function . MWave function Infrared transfer . Two IR ports . IrDA 1.0 . ASK . 1.15 million bps PCMCIA . One Type-III or two Type-II ThinkPad 760 (9546, 9547) 377 Model 760E or 760ED Feature Description Processor . Intel Pentium 120 MHz with 256KB L2 Cache . Intel Pentium 133 MHz with 256KB L2 Cache . Intel Pentium 150 MHz with 256KB L2 Cache . Intel Pentium 166 MHz with 256KB L2 Cache Bus architecture . PCI bus . VESA local bus for video subsystem Memory (standard) 8MB or 16MB (on the system board) Memory (option) . 8MB, 16MB, 32MB, DIMM (max. 72MB or 80MB) . DIMM adapter CMOS RAM 114 bytes + 4 kilobytes VGA video . 12.1-inch, 64K colors, 800.600 pixel TFT color LCD . 12.1-inch, 64K colors, 1024.768 pixel TFT color LCD Diskette drive (removable) . 720KB, 1.2MB, 1.44MB, 2.88MB (4-mode), 3.5-inch . 720...

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