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. . . . . . . . . . 0.264 mm Power consumption . . . . . . . 3.9 W Controls . . . . . . . . . . . . . . . . brightness can be controlled through key combinations .H\ERDU. Number of keys . . . . . . . . . . 87 (U.S. and Canada); 88 (Europe); 88 (Japan) Key travel . . . . . . . . . . . . . . . 3.0 ± 0.5 mm (0.12 ± 0.02 inch) Key spacing . . . . . . . . . . . . . 19.1 mm (0.75 inch) Layout . . . . . . . . . . . . . . . . . QWERTY/AZERTY/Kanji System Overview 1-11 7DEO. . 7HFKQLFD. 6SHFLILFDWLRQ. FRQWLQXHG. 7RXF. 3D. Interface. . . . . . . . . . . . . . . . . PS/2-compatible X/Y position resolutions (graphics table mode) . . . . . . 20 points/mm (500 points/inch) Size: Thickness . . . . . . . . . . . . . 4.65 mm (0.18 inch) at highest component Width . . . . . . . . . . . . . . . 64-mm (2.52-inch) sensor-active area Height . . . . . . . . . . . . . . . 47.0-mm (1.85-inch) rectangle with 0.5-mm (0.02-inch) tabs Weight . . . . . . . . . . . . . . . 15 g (0.52 oz.) ± 0.5 g (0.001 oz.) Power: Supply voltage . . . . . . . . . 5 V ± 10% Supply current . . . . . . . . . 4 mA (maximum operating) 0DL. DQ. 6HFRQ. %DWWHU. Type . . . . . . . . . . . . . . . . . . . . lithium ion Maximum dimensions: Height . . . . . . . . . . . . . . . 23.0 mm (0.91 inch) Depth . . . . . . . . . . . . . . . . 146.5 mm (5.77 inches) Width . . . . . . . . . . . . . . . . 98.3 mm (3.87 inches) Weight . . . . . . . . . . . . . . . . . . 0.44 kg (.97 lb) Voltage. . . . . . . . . . . . . . . . . . 10.8 VDC Capacity . . . . . . . . . . . . . . . . . 48.5 WH Charge time (approximate):1 Computer on . . . . . . . . . . 3.0 hours Computer off . . . . . . . . . . 2.0 hours Operating time (approximate)1 . . . . . . . . . . . . 2 to 3 hours with one battery; 4 to 6 hours with two batteries Life span (approximate)1 . . . . 400 discharge/charge cycles Temperature range: Charge . . . . . . . . . . . . . . . 5° to 35°C (41° to 95°F) Discharge. . . . . . . . . . . . . 5° to 35°C (41° to 95°F) Storage . . . . . . . . . . . . . . –20° to 50°C (–4° to 122°F) 1 Bat ttery performance featuressuchaschargetime,operatingtime, andlifespancanvary according totheconditionsunderwhichthe computerand bat tteryare usedand accordingto the configuration ofthecomputersystem. 1-12 Dell Inspiron 3500 Portable Computer Service Manual 7DEO. . 7HFKQLFD. 6SHFLILFDWLRQ. FRQ. LQXHG. $. $GDSWH. Input voltage . . . . . . . . . . . . 90 to 264 VAC Input current (maximum) . . . 1.5 A at 90 VAC, full load Input frequency . . . . . . . . . . 47 to 63 Hz Output current . . . . . . . . . . . 3.5 A continuous Output power . . . . . . . . . . . 70 W Rated output voltage . . . . . . 20 VDC Dimensions: Height . . . . . . . . . . . . . . 29.6 mm (1.17 inches) Width . . . . . . . . . . . . . . . 60.0 mm (2.36 inches) Depth . . . . . . . . . . . . . . . 105 mm (4.13 inches) Weight (with cables) . . . . . . 0.3 kg (0.66 lb) Temperature range: Operating . . . . . . . . . . . . 5° to 35°C (41° to 95°F) Storage . . . . . . . . . . . . . –20° to 50°C (–4° to 122°F) 3K\VLFD. ,QF. 'LVSOD\. Height . . . . . . . . . . . . . . . . . 37.1 mm (1.46 inches) Width . . . . . . . . . . . . . . . . . . 325.7 mm (12.82 inches) Depth . . . . . . . . . . . . . . . . . . 258.7 mm (10.19 inches) Weight (includes hard-disk drive, diskette drive, and battery . . . . . . . . . . . . . . . . . 2.72 kg (6.1 lb + 0.10 lb) 3K\VLFD. ,QF. 'LVSOD\. Height . . . . . . . . . . . . . . . . . 38.1 mm (1.50 inches) Width . . . . . . . . . . . . . . . . . . 325.7 mm (12.82 inches) Depth . . . . . . . . . . . . . . . . . . 258.7 mm (10.19 inches) Weight (includes hard-disk drive, diskette drive, and battery . . . . . . . . . . . . . . . . . 2.90 kg (6.4 lb + 0.10 lb) System Overview 1-13 7DEO. . 7HFKQLFD. 6SHFLILFDWLRQ. FRQ. LQXHG. (QYLURQPHQWD. &RPSXWHU. Temperature: Operating . . . . . . . . . . . . . 5° to 35°C (41° to 95°F) Storage . . . . . . . . . . . . . . –20° to 50°C (–4° to 122°F) Relative humidity . . . . . . . . . . 10% to 90% (noncondensing) Maximum vibration: Operating . . . . . . . . . . . . . 0.9 GRMS using a random-vibration spectrum that simulates shipment by air Storage . . . . . . . . . . . . . . 1.3 GRMS using a random-vibration spectrum that simulates shipment by truck Maximum shock: Operating . . . . . . . . . . . . . 1.52 m/sec (60 inches/sec) (less than or equal to a pulse width of 2 ms) Storage2 . . . . . . . . . . . . . . 2.03 m/sec (80 inches/sec) (less than or equal to a pulse width of 2 ms) Altitude: Operating . . . . . . . . . . . . . 0 to 3048 m (0 to 10,000 ft) Storage . . . . . . . . . . . . . . 0 to 12,192 m (0 to 40,000 ft) 2 Measured with the hard-disk driveinhead-parked position. 1-14 Dell Inspiron 3500 Portable Computer Service Manual &+$37(5. ,QLWLDO3URFHGXUH. This chapter describes initial procedures that can help you diagnose a computer problem. These procedures can often reveal the source of a problem or indicate the correct starting point for troubleshooting the computer. Dell recommends that y...