![background image](http://html.mh-extra.com/html/ibm/thinkpad-310/thinkpad-310_hardware-maintenance-manual_607399043.webp)
No Beep Symptoms
Symptom/Error
FRU/Action in Sequence
No beep, power-
on indicator on,
and a blank LCD
during POST
1. Ensure all connectors are securely
seated.
2. Reseat the CPU
3. CPU
4. System board
No beep, power-
on indicator not
on, and a blank
LCD during
POST
1. Reseat the LCD Connectors
2. Power source (battery & adapter).
See “Power System Checkout” on
page 8.
3. Audio connector board
4. Charger board
5. Hard disk drive
6. LCD inverter ID
7. LCD FPC Cable
8. LCD inverter
9. LCD
10. System board
No beep, power-
on indicator on,
and a blank LCD
during POST.
1. Reseat the DIMM.
2. Reseat the LCD Connectors.
3. Hard disk/CD-ROM/diskette drive
connectors
4. Hard disk drive
5. Keyboard
6. LCD inverter ID
7. LCD FPC Cable
8. LCD inverter
9. LCD
10. System board
No beep, power-
on indicator on,
and a blinking
cursor only
during POST.
1. Reseat the LCD Connectors
2. Reseat Hard disk/CD-ROM/
diskette drive connectors
3. Hard disk drive
4. LCD inverter ID
5. LCD FPC Cable
6. LCD inverter
7. LCD
8. System board
No beep during
POST but
system runs
correctly.
System board
Note: The buzzer is on the system
board.
LCD-Related Symptoms
Important: The notebook computer LCD contains over
921,000 thin-film transistors (TFTs). A small number of
missing, discolored, or lighted dots (on all the time) is
characteristic of TFT LCD technology, but excessive pixel
problems can cause viewing concerns. The LCD should
be replaced if the number of missing, discolored, or lighted
dots in any background is 21 or more.
18
IBM Mobile Systems ThinkPad 310 (D/E/ED) HMM
Summary of Contents for ThinkPad 310
Page 3: ......
Page 9: ...vi IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 64: ...Side View Hinge Cover ThinkPad 310 310D 310E 310ED 2600 39 ...
Page 81: ...Speaker and Cover Switch Cables 56 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 84: ...PCMCIA Door and PCMCIA Door Spring ThinkPad 310 310D 310E 310ED 2600 59 ...
Page 88: ...Keyboard Connector Board ThinkPad 310 310D 310E 310ED 2600 63 ...
Page 91: ...Bottom View 1 DIMM door 66 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 95: ...310 System Unit Parts Listing 70 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 96: ...310D System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 71 ...
Page 102: ...310E System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 77 ...
Page 103: ...310ED System Unit Parts Listing 78 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 107: ...310E 310ED LCD Unit Parts Listing 82 IBM Mobile Systems ThinkPad 310 D E ED HMM ...
Page 110: ...310ED 2600 Bxx Dxx System Unit Parts Listing ThinkPad 310 310D 310E 310ED 2600 85 ...
Page 121: ...IBM Part Number 05L1935 Printed in U S A Sð5L 1935 ðð ...