Manuel d'utilisation / d'entretien du produit C640 du fabricant Dell
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Dell™ Latitude™ C540/C640 Service Manual Before You Begin System Components Hard Drive Memory Modules, Mini PCI Card, and Modem Keyboard Display Assembly, Display Latch, and Hinge Covers Palm Rest.
Back to Contents Page Before You Begin Dell™ Latitude™ C540/C640 Service Manual Preparing to Work Inside the Computer Recommended Tools Screw Identification Preparing to Work Inside the Computer CAUTION: Before working inside your computer, read the safety instructions in your System Information Guide .
Recommended Tools The procedures in this manual require the following tools: #1 magnetized Phillips screwdriver ¼- inch flat - blade screwdriver Small plastic scribe Microprocessor extractor Flash BIOS update program floppy disk or CD.
NOTICE: When reinstalling a screw, you must use a screw of the correct diameter and length. Ensure that the screw is properly aligned with its corresponding hole, and avoid overtightening. Hard Drive Door: (1 each) Memory Module Cover: (2 captive screws) (1 each) NOTE: The single screw is one of the five keyboard screws.
Display Latch: (2 each) (2 each) Palm Rest to Bottom Case: (3 each) (5 each) Hybrid Cooling Fan: (2 each) (1 each) System Board to Bottom Case: (10 each) Back to Contents Page.
Back to Contents Page System Components Dell™ Latitude™ C540/C640 Service Manual NOTICE: Only a certified service technician should perform repairs on your computer. Damage due to servicing that is not authorized by Dell is not covered by your warranty.
9 fan guard Back to Contents Page.
Back to Contents Page Hard Drive Dell™ Latitude™ C540/C640 Service Manual Removing the Hard Drive 1 . Save and close any open files, exit any open programs, and then shut down the computer. NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
Replacing the Hard Drive NOTICE: Use firm and even pressure to slide the hard drive into place. If you force the hard drive into place using excessive force, you may damage the connector. 1 . Lift the hard drive door until you hear a click. Push the hard drive until it is fully seated in the hard drive bay.
Back to Contents Page Memory Modules, Mini PCI Card, and Modem Dell™ Latitude™ C540/C640 Service Manual Memory Modules Mini PCI Card Modem Memory Modules Removing the Memory Module Cover NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.
NOTE: Memory modules are keyed, or designed to fit into their sockets, in only one direction. NOTICE: The memory module must be inserted at a 45 - degree angle to avoid damaging the connector. 2 . Align the notch in the memory- module edge connector with the tab in the socket.
1 antenna connectors on card (2) 2 antenna cables (2) Replacing the Mini PCI Card 1 . Align the Mini PCI card with the socket at a 45 - degree angle, and press the Mini PCI card into the socket. NOTICE: The connectors are keyed for correct insertion; do not force the connections.
NOTICE: Do not pull on the modem cable. Pull from the modem connector to disconnect the cable. 3 . Pull straight up on the attached pull- tab to lift the modem out of its connector on the system board and disconnect the modem cable. 1 M2 x 3 - mm screws (2) 2 modem connector 3 modem cable 4 pull -tab Replacing the Modem 1 .
Back to Contents Page Keyboard Dell™ Latitude™ C540/C640 Service Manual Removing the Keyboard NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.
5 . To release the keyboard from the palm rest, use a small, flat - blade screwdriver or plastic scribe to pry up the right edge of the keyboard near the blank key.
1 boss supports (5) 2 track stick cable 3 keyboard flex cable 4 keyboard interface connector 5 orientation label 8 . Remove the keyboard from the bottom case. Replacing the Keyboard 1 . Place the keyboard on the palm rest at the front of the computer with the keys face down and the connector toward the back of the computer.
Back to Contents Page.
Back to Contents Page Display Assembly, Display Latch, and Hinge Covers Dell™ Latitude™ C540/C640 Service Manual Display Assembly Display Latch Hinge Covers Display Assembly NOTICE: You must remove the display assembly before you remove the palm rest.
1 M2 x 3 - mm screws (2) 2 top cover 3 center control cover 4 M2.5 x 5 - mm screws (5) 5 bottom case 6 display - feed flex cable 7 EMI shield bracket 8 .
1 M2 x 3 - mm screws (2) 2 pull -tab 3 display - feed cable connector 4 interface connector 9 . Pull up on the pull - tab that is attached to the display - feed flex cable connector to remove it from the interface connector on the system board. 10 . Pivot the display assembly up to a 90 - degree angle and lift it out of the bottom case.
1 rubber screw covers (6) 5 M2 x 4 - mm screws (5) 2 M2.5 x 5 - mm screws (6) 6 display - feed flex cable 3 display bezel 7 flex- cable retention bracket 4 top cover 8 display panel Removing the Display Bezel NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
2 . Remove the display assembly . 3 . Use a plastic scribe to pry the six rubber screw covers out of the screw holes located on the front of the bezel. 4 . Remove the six M2.5 x 5 - mm screws located on the front of the bezel. NOTICE: Carefully separate the bezel from the top cover to avoid damage to the bezel.
1 display panel connector 2 top flex cable connector 3 pull -tab 4 bottom flex cable connector 5 inverter connector 9 . Remove the tape that secures the display panel connector and the tape that secures the middle of the display - feed flex cable to the display panel.
NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer. Removing the Display Latch 1 .
Hinge Covers Removing the Hinge Covers 1 . Remove the display assembly . 2 . Rotate the hinges forward at an angle of approximately 90 degrees to the front of the display assembly. 3 . To remove the hinge covers, slide them off the hinges. Replacing the Hinge Covers 1 .
1 right hinge cover 2 left hinge cover Back to Contents Page.
Back to Contents Page Palm Rest Dell™ Latitude™ C540/C640 Service Manual Removing the Palm Rest NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries. NOTICE: To avoid ESD, ground yourself by using a wrist grounding strap or by touching an unpainted metal surface on the computer.
6 . Turn the computer over, and remove the three M2 x 3 - mm screws that secure the palm rest to the bottom case: a . Remove the two M2 x 3 - mm screws that are located on the back edge of the bottom case, underneath the display assembly.
Back to Contents Page Microprocessor Thermal Cooling Assembly Dell™ Latitude™ C540/C640 Service Manual Removing the Microprocessor Thermal Cooling Assembly NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
pry the assembly up and out of the system board. Replacing the Microprocessor Thermal Cooling Assembly NOTICE: To ensure proper thermal operation, always install a new, compatible thermal cooling assembly along with a new microprocessor.
Back to Contents Page Microprocessor Module Dell™ Latitude™ C540/C640 Service Manual Removing the Microprocessor Module NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
NOTICE: To ensure maximum cooling for the microprocessor, do not touch the heat transfer areas on the microprocessor thermal cooling assembly. The oils in your skin reduce the heat transfer capability of the thermal pads. 3 . Remove the microprocessor thermal cooling assembly .
Back to Contents Page Hybrid Cooling Fan Dell™ Latitude™ C540/C640 Service Manual Removing the Hybrid Cooling Fan NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
7 . Disconnect the fan power cable from the system - board interface connector and remove the hybrid cooling fan. NOTE: The fan power cable is long, and can be pulled out from under the EMI shield to provide access to the connector. NOTICE: Do not block the keyboard screw hole when reinstalling the fan.
Back to Contents Page Reserve Battery Dell™ Latitude™ C540/C640 Service Manual Removing the Reserve Battery NOTICE: The reserve battery provides power to the computer's RTC and NVRAM when the computer is turned off.
2 reserve battery tray 3 reserve battery cable 4 reserve battery connector on system board 5 speaker cables 6 opening for reserve battery cable Replacing the Reserve Battery 1 .
Back to Contents Page Flashing the BIOS Dell™ Latitude™ C540/C640 Service Manual To update the basic input/output system (BIOS): 1 . Ensure that the AC adapter is plugged in and that the main battery is installed properly. 2 . Turn on the computer and press to enter the system setup program.
Back to Contents Page Speaker Assemblies Dell™ Latitude™ C540/C640 Service Manual Removing the Speaker Assemblies NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
1 right speaker 2 palm -rest screw posts (2) 3 bottom case holders (2) 4 left speaker.
1 antenna cable 7 antenna cable 2 speaker interface cable 8 right speaker holder 3 in- line connector 9 mounting ring 4 left speaker 10 right speaker 5 mounting ring 11 speaker interface cable 6 left speaker holder 1 . Remove the hard drive . 2 . Remove the keyboard .
5 . Disconnect the speaker interface cables. (Do not attempt to disconnect the antenna cables.) NOTICE: Do not pull the antenna wire when removing the speaker. NOTICE: Handle the speaker assemblies and speakers carefully to avoid damaging the speaker cones.
Back to Contents Page System Board Dell™ Latitude™ C540/C640 Service Manual Removing the System Board The system board's BIOS chip contains the service tag sequence, which is also visible on a bar code label on the bottom of the computer.
1 fan guard 2 M2.5 x 5 - mm screws (9) 10 . Turn the computer over and remove the M2.5 x 5 - mm screw, which is labeled "circle B" with an arrow on the front center of the system board by the battery connector.
11 . Remove the speaker assemblies from the bottom case. 12 . Pull the right side of the bottom case, next to the audio connectors, away from the system board as you simultaneously lift the front of the system board out and away from the bottom case. Replacing the System Board 1 .
Back to Contents Page Battery and Module Bay Latches Dell™ Latitude™ C540/C640 Service Manual Removing the Battery and Module Bay Latches NOTICE: Disconnect the computer and any attached devices from electrical outlets, and remove any installed batteries.
1 bumps (2 per latch) 5 latch release buttons (2) 2 slider 6 snap tabs (2 per latch assembly) 3 spring 7 upper latch assemblies (2) 4 bottom case 8 wear rib Replacing the Battery and Module Bay Latches 1 . If you are replacing the upper latch assembly: a .
Back to Contents Page Pin Assignments for I/O Connectors Dell™ Latitude™ C540/640 Service Manual USB Connector Pin Signal 1 VCC 2 –Data 3 +Data 4 Ground Serial Connector Pin Signal Pin Signal 1 .
Pin Signal Pin Signal 1 STRB#/5V 11 BUSY/MTR# 2 PD0/INDEX# 12 PE/WDATA# 3 PD1/TRK0# 13 SLCT/WGATE# 4 PD2/WP# 14 AFDF# 5 PD3/RDATA# 15 ERROR#HDSEL# 6 PD4/DSKCHG# 16 INIT#/DIR# 7 PD5F 17 SLCT_IN#STEP# 8.
PS/2 Connector Pin Signal 1 DAT_KBD 2 DAT_SM1 3 GND 4 PS2VCC 5 CLK_KBD 6 CLK_SM1 S - Video TV - Out Connector S -Video Pin Signal 1 GND 2 GND 3 DLUMA - L 4 DCRMA - L Composite Video Pin Signal.
5 NC 6 DCMPS - L 7 GND Docking Connector Pin Signal Pin Signal 1 STRB#/5V 101 VGA_GRN 2 PD0 102 GND 3 PD1 103 VGA_RED 4 PD2 104 GND 5 PD3 105 VGA_BLU 6 PD4 106 DOCK_SD/MODE 7 PD5 107 D_IRTX 8 PD6 108 .
26 DOCK_PWR_SRC 126 SCLKRUN# 27 DOCK_PWR_SRC 127 GND 28 DOCK_PWR_SRC 128 SGNTA# 29 GND 129 SREQA# 30 +5VDOCK 130 SGNT0# 31 +5VDOCK 131 SREQ0# 32 +5VDOCK 132 SPCIRST# 33 +5VDOCK 133 SH1SEL# 34 +5VDOCK .
66 DOCK_MCLK 166 SAD10 67 GND 167 SAD11 68 +12V 168 SAD12 69 AFD# 169 GND 70 ERROR# 170 SAD13 71 ACK# 171 SAD14 72 GND 172 SAD15 73 INIT# 173 SAD16 74 SLCT_IN# 174 SC/BE1# 75 BUSY 175 CD/BE2# 76 PE 17.
Un point important après l'achat de l'appareil (ou même avant l'achat) est de lire le manuel d'utilisation. Nous devons le faire pour quelques raisons simples:
Si vous n'avez pas encore acheté Dell C640 c'est un bon moment pour vous familiariser avec les données de base sur le produit. Consulter d'abord les pages initiales du manuel d'utilisation, que vous trouverez ci-dessus. Vous devriez y trouver les données techniques les plus importants du Dell C640 - de cette manière, vous pouvez vérifier si l'équipement répond à vos besoins. Explorant les pages suivantes du manuel d'utilisation Dell C640, vous apprendrez toutes les caractéristiques du produit et des informations sur son fonctionnement. Les informations sur le Dell C640 va certainement vous aider à prendre une décision concernant l'achat.
Dans une situation où vous avez déjà le Dell C640, mais vous avez pas encore lu le manuel d'utilisation, vous devez le faire pour les raisons décrites ci-dessus,. Vous saurez alors si vous avez correctement utilisé les fonctions disponibles, et si vous avez commis des erreurs qui peuvent réduire la durée de vie du Dell C640.
Cependant, l'un des rôles les plus importants pour l'utilisateur joués par les manuels d'utilisateur est d'aider à résoudre les problèmes concernant le Dell C640. Presque toujours, vous y trouverez Troubleshooting, soit les pannes et les défaillances les plus fréquentes de l'apparei Dell C640 ainsi que les instructions sur la façon de les résoudre. Même si vous ne parvenez pas à résoudre le problème, le manuel d‘utilisation va vous montrer le chemin d'une nouvelle procédure – le contact avec le centre de service à la clientèle ou le service le plus proche.
