Panasonic CF-74ECBGDBM Service Manual

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ORDER NO.

CPD0611205C1

Personal Computer

CF-74ECBGDBM

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Table of Contents

Summary of Contents for Panasonic CF-74ECBGDBM

Page 3 LASER SAFETY INFORMA TION For U.S.A. Class 1 LASER-Product This product is certified to comply with DHHS Rules 21 CFR Subchapter J. This product complies with European Standard EN60825 (or IEC Publication 825) For all areas This equipment is classified as a class 1 level LASER product and there is no hazardous LASER radiation. Caution: (1) Use of controls or adjustments or performance of procedures other than those specified herein may result in hazardous radiation exposure.
Page 6: Table Of Contents
CONTENTS 1. Specifications ··················································································································1-1 2. Names and Functions of Parts ······················································································2-1 3. Block Diagram ···············································································································3-1 4. Diagnosis Procedure ·····································································································4-1 5. Power-On Self Test (Boot Check) ·················································································5-1 6. List of Error Codes <Only when the port replicator is connected> ································6-1 7. Self Diagnosis Test ········································································································7-1 8.
Page 7: Specifications
1 Specifications This page provides the specifications for the basic model CF-74ECBAXBM / CF-74FCBAZBM / CF-74FCBCZBM / CF- 74ECBCXBM / CF-74ECBADBM. The model number is different according to the unit configuration. To check the model number: Check the bottom of the computer or the box the computer came in at the time of purchase. To check CPU speed, memory size and the hard disk drive (HDD) size: Run the Setup Utility ( Reference Manual “Setup Utility”) and select [Information] menu.
Page 8 “c:\util\drivers\tpm\README.pdf”, and refer to the Installation Manual of “Trusted Platform Module (TPM)”. You need to install to use the feature. Operation has been tested and confirmed using Panasonic The Product Recovery DVD-ROM is required. SD Memory Cards with a capacity of up to 2 GB.
Page 9: Names And Functions Of Parts
2 Names and Functions of Parts A :Speaker : Power status Reference Manual “Key Combinations” (Off: Power off/Hibernation, Green: Power on, Blink- ing green: Standby, Blinking green rapidly: Cannot B :USB port power on or resume due to low temperature.) Reference Manual “USB Devices”...
Page 10 Right side EX PC Rear side Bottom A :ExpressCard slot K :LAN port Reference Manual “PC Card / ExpressCard” Reference Manual “LAN” B :PC Card slot L : Modem port Reference Manual “PC Card / ExpressCard” Reference Manual “Modem” C :Smart Card slot M :Serial port <Only for model with Smart Card slot>...
Page 11: Block Diagram
3 Block Diagram...
Page 12 4.1.
Page 13 4.2. Troubleshooting Please take note of the following two points with regard to troubleshooting: 1. Know-how of diagnosis upon occurrence of heavy troubles, e.g. ‘Set cannot be turned ON’, ‘Set fails to start’, ‘No display on screen’, etc. 2. Explanation of each trouble, mainly symptom of trouble in operation. ●...
Page 14: Power-On Self Test (Boot Check)
5 Power-On Self Test (Boot Check) Outline of POST The set has a boot check function called POST (Power-On Self Test) in it. The condition of the main body is diagnosed by checking beep sound or error code. z Start .....Test begins automatically when power switch is set to ON. z Normal finish ..After memory checking, a beep sound is issued once and the set is placed into automatic stop.
Page 15: List Of Error Codes
If your system displays one of except the messages marked below with an asterisk (*), write down the message and contact Panasonic Technical Support. If your system fails after you make changes in the Setup menus, reset the computer, enter Setup and install Setup defaults or correct the error.

Page 16 02D0 System cache error - Cache disabled Contact Panasonic Technical Support. 02F0: CPU ID: CPU socket number for Multi-Processor error. 02F4: EISA CMOS not writable ServerBIOS2 test error: Cannot write to EISA CMOS. 02F5: DMA Test Failed ServerBIOS2 test error: Cannot write to extended DMA (Direct Memory Access) registers.
Page 17: Self Diagnosis Test
The power supply of the computer is turned on. " F2 " is pushed on the screen of "Panasonic" while " press <F2 to enter Setup> " is displayed. The setup utility starts and then takes notes of the content of the BIOS setup of present set.
Page 18 2. Operation of PC-Diagnostic Utility -Only the device which can be inspected on the entire screen is displayed. -The item does not appear when the device of wireless LAN etc. is not physically connected. -The movement of the item must use an arrow key or a flat pad. -As for the device under the diagnosis, blue and yellow are alternately displayed at the left of the icon.
Page 19 2-3. The content of the setup is returned to the setting of the user Turned on the computer. "F2" is pushed on the screen while "Press<F2>to enter Setup" is displayed of "Panasonic". Push "F10", and on the screen of "Is the change in the setting preserved and do end?"and then "Yes"...
Page 20 7.1. Test Item and Division of trouble Place with possibili- Test item Stanard Enhancing Content of standard test Content of enhancing test ty of breakdown CPU / CPU is shifted to protected mode, and CPU / SYSTEM "Violation of the paging", "Operation of Main board the violation of a privileged instruc- tion", and DMA, INT, TIMER, and the...
Page 21 The place with possibility of Test Item Standard Enhanced Content of Standard Test Content of Extend Test breakdown It is confirmed not to find Perform Touch Screen abnormality in the USB functionality practically. Main board/ Touch Screen connection of Touch Screen. Operator has to judge Touch Screen This test cannot find...
Page 22: Wiring Connection Diagram
8 Wiring Connection Diagram SPEAKER (R) SPEAKER (L) TS PCB I O PCB LED PCB CN1001 SERIAL SW1001 CN1002 POWER SW CN1602 CN1003 USB PCB CN1203 CN1701 CN1201 INVERTER CN1603 BATTERY CN1202 PACK CN1702 DC-IN CN801 CN17 CN18 CN15 CN1401 JK1501 CN802 CN1501...
Page 23: Disassembly/Reassembly
9 Disassembly/Reassembly Note: Power off the computer. Do not shut down to the Suspend or hibernation mode. Do not add peripherals while the computer is in the Suspend or hibernation mode; abnormal operation may result. 9.1. Disassembly Instructions 9.1.1. Preparation 9.1.3.
Page 24 9.1.4. Removing the DIMM Memory Card 2. Lift the upper part of the Center Cover and draw it back- ward, release the six Hooks fixing the front side of the <N1> Center Cover, and then remove the Center Cover. DIMM Cover <N1>...
Page 25 9.1.7. Removing the Handle Ass'y 9.1.9. Removing the Wireless Module and MDC Module <N2> <N4> <N9> Antenna Cable (Black) <N4> Antenna Cable (Gray) Sleeves B Handle Cover R Handle Cover L Wireless Module Sleeves A <N9> MDC Module Sleeves A Handle Ass’y Modem Cable 1.
Page 26 Note: 1. Remove the two Screws <N9>. After replacing the Main Board, rewrite the BIOS ID. 2. Remove the DC-IN PCB. 1. Disconnect the ten Cables from the ten Connectors (CN6, 3. Remove the two Screws <N9>. CN7, CN24, CN19, CN28, CN21, CN802, CN18, CN15, 4.
Page 27 9.1.14. Removing the USB PCB 9.1.16. Removing the LCD Front Cabinet <N9> LCD Leg Rubber <N16> LCD Leg CN1701 Rubber <N15> USB PCB LCD Front Cabinet LCD Unit <N15> 1. Remove the two LCD Leg Rubbers, and then the two Screws <N16>.
Page 28 1. Disconnect the LCD/INV. Cable from the Connector on 1. Remove the Palm Rest Sheet. the Inverter. 2. Remove the four Screws <N20>, and then PAD Base 2. Remove the LCD Unit. Ass'y. 3. Remove the Inverter with the Inverter Case. 3.
Page 29 9.2. Reassembly Instructions 9.2.1. Attention when CF-74 series is repaired • Please execute writing BIOS ID when you exchange the Main Board. • You cannot reuse the Conductive Clothes and the heat dissipating parts such as Sheet and Rubber. Use new parts. 9.2.2.
Page 30 Arranging the W-LAN L and R Cable W-LAN Antenna L PCB W-LAN Antenna R PCB Attach the Tape to hold the Cable. Pass the Cable through the notch and lead it downward. Lead the Cable along the surface. Pass the Cable through the notch Attach the Tape to each of the Cables.
Page 31 Arranging the LCD/TS Cable 1. Connect the LCD/TS Cable (LCD) to the Connector on the LCD Unit. 2. Connect the LCD/TS Cable (TS) to the Connector (CN603) on the TS PCB. B: Attaching the Cloth Cloth Cloth Cushion Cloth Match the end of the Tape to the end of the EMI Sheet. 3~5mm Tape Cover the...
Page 32 Arranging the TP Power Cable and Attaching the TP/LCD Sheet Ensure the Tape does not cover the Connecter port. Safety Working Match the end of the Sheet to the end of the Connecter. Sheet Connect the Connector. TP Power Cable Pass the Cables over the Conductive Cloth.
Page 33 Cautions for Setting the LCD Unit LCD Unit Ensure the Cushion does not run over the rib of the LCD Rear Cabinet. (Same on the upper side.) LCD Rear Cabinet Safety Working Ensure the Cushion does not run over the rib Pull and hold the Cables, and set the LCD.
Page 34 9.2.4. Setting the LCD Front Cabinet 1. Set the LCD Front Cabinet to the LCD Rear Cabinet. LCD Leg Rubber 2. Fix the LCD Front Cabinet using the two Screws<N15>. 3. Fix the LCD Front Cabinet using the two Screws<N16>, and attach the two LCD Leg Rubbers.
Page 35 9.2.6. Setting the USB PCB 1. Fix the USB PCB to the computer using the two <N9> Screws<N9>. CN1701 2. Connect the USB Cable to the Connector (CN1701). Screws <N9>: DFHE5025XA USB PCB Arranging the USB Cable MP Slide Sheet Safety Working Attach the MP Slid Sheet to prevent the Cable from coming off.
Page 36 9.2.7. Setting the SD PCB, Heat Sink and FAN Motor 1. Connect the SD FFC to the Connector (CN1401). 2. Fix the SD PCB to the computer using the three Cable Holder Screws<N9>. Fan Tape2 Fan Tape1 3. Set the Heat Sink, Fan Duct and the four Heat Sink <N5>...
Page 37 9.2.8. Setting the DC-IN PCB and I/O PCB 1. Fit the Modem Cable and LAN Cable between the MOD- LAN Cable MODELAN ELAN Holders, and set them on to the computer. Modem Cable Holder 2. Fix the I/O PCB to the I/O Plate using the four <N19>...
Page 38 9.2.9. Setting the PC Card Ejector and Lithium Battery 1. Attach the Lithium Battery to the Main PCB. Lithium Battery 2. Pass the Lead Wire of the Lithium Battery through the PC Card Ejector (to CN14) groove of the Main PCB, and connect it to the Connector (CN14) on the back side.
Page 39 Arranging the Cables to the Cable Holder and their Wiring Order • Pull the surplus length of the Cable coming from the LCD side to inside of the unit. (If the surplus length comes outside, it will be caught by the center cover during setting.) •...
Page 40 9.2.11. Setting the Wireless Module and MDC Module 1. Connect the Modem Cable to the Connector, and fix the <N9> MDC Module to the Main PCB using the two Screws<N9>. Antenna Cable (Black) 2. Connect the Wireless Module to the Connector of the Antenna Cable (Gray) Main PCB, and fix it using the two Screws<N9>.
Page 41 9.2.12. Setting the Bottom Case <N7>:No5 <N7>:No8 <N7>:No10 <N7> 1. Attach the Gasket and Sheet. <N8> <N7>:No4 :No9 :No18 <N5>:No12 2. Set the Bottom Case. 3. Fix the Bottom Case using the ten Screws<N7>. No1 to <N5>:No11 No10 <N7>:No3 4. Fix the Bottom Case using the six Screws<N5>. No11 to <N8>...
Page 42 9.2.14. Setting the Speaker and the LED PCB 1. Fix the LED PCB using the two Screws<N9>. <N9> 2. Set the Speaker L and R to the computer. CN1002 3. Connect the Speaker Cable L and R to the two Connec- CN1003 Tape tors (CN1002, CN1003) on the LED PCB.
Page 43 9.2.15. Setting the Keyboard 1. Connect the KBD FPC Cable to the Connector (CN25) of KBD WP Sheet the Main PCB. 2. Connect the two Cables of the Keyboard to the two Con- nectors on the KBD FPC. 3. Remove the Release Paper of the KBD WP Sheet, and Connectors attach the KBD WP Sheet to the computer as it covers the Cable of the Keyboard.
Page 44 9.2.16. Setting the DIMM Memory Card and DIMM Cover 1. Set the DIMM Memory Card to the Main PCB. <N1> 2. Fix the DIMM Cover using the two Screws<N1>. <N1> DIMM Cover Screws <N1>: XSB2+3FNL Hook Hook DIMM Memory Card 9.2.17.
Page 45 9.2.18. Setting the Battery Pack, the HDD Unit and the DVD-ROM Drive Unit 1. Set the DVD-ROM Driver Unit. 2. Set the HDD Pack. Latch 1 3. Set the Battery Pack. 4. Slide the Latch 1 to the locked position. HDD Unit Battery Pack DVD-ROM Drive Unit...
Page 46: Exploded View
0.1 ± 0.01 N.m 1.2 ± 0.1 N.m E1005 (1.0 ± 0.1 kgf.cm) (12.0 ± 1.0 kgf.cm) 0.2 ± 0.02 N.m 0.8 ± 0.1 N.m (2.0 ± 0.2 kgf.cm) (8.0 ± 1.0 kgf.cm) 0.4 ± 0.02 N.m (4.0 ± 0.2 kgf.cm) CF-74ECBGDBM 10-1...
Page 47 K1010 E20-1 K1009 K101 K1007 K1008 E17-2 E17-3 E17-5 E17-6 E17-1 E17-4 E17-7 Screw tightening torque 0.2 ± 0.02 N.m (2.0 ± 0.2 kgf.cm) 0.13 ± 0.01 N.m (1.3 ± 0.1 kgf.cm) CF-74ECBGDBM 10-2...
Page 48 Screw tightening torque K207 K207 0.1 ± 0.01 N.m (1.0 ± 0.1 kgf.cm) K202 0.2 ± 0.02 N.m (2.0 ± 0.2 kgf.cm) 0.8 ± 0.1 N.m (8.0 ± 1.0 kgf.cm) 0.375 ± 0.025 N.m (3.75 ± 0.25 kgf.cm) CF-74ECBGDBM 10-3...
Page 49 E22-4 E22-2 E22-1 E22-5 E22-4 E22-6-4 E22-6-3 E22-4 E22-3 E22-4 E22-6-4 E22-6 E22-6-6 E22-6-5 E22-6-2 E22-6-1-1 E22-6-1 E22-6-5 CF-74ECBGDBM 10-4...
Page 50: Replacement Parts List
11 Replacement Parts List Comparison Table Note : Important Safety Notice Components identified by mark have special characteristics important for safety. When replacing any of these components, use only manufacturer's specified parts. CF-74ECBGDBM PART NO. REF. NO and　AREA DESCRIPTION Q'TY...