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Miscellaneous Symptoms
Symptom / Error
FRU / Action
No beep, Power-on LED not
lit, and a blank LCD during
POST.
(See “Power Systems
Checkout” on page 290
before replacing any FRUs.)
1. System Board
2. DC/DC Card
3. Power source when
failing
No beep, Power-on LED lit,
and a blank LCD during
POST.
(See “Power Systems
Checkout” on page 290
before replacing any FRUs.)
1. System Board
2. Modem Card
No beep during POST but
computer runs OK.
1. System Board
(Speaker)
LCD screen unreadable or
characters missing pels.
1. LCD Assembly
2. System Board
One or more keys do not
work.
1. Keyboard
2. System Board
Computer does not respond
to Pen input.
1. Pen
2. LCD Assembly
3. System Board
LCD backlight not
functioning.
1. Inverter Card
2. LCD Assembly
3. Switch and LED Card
4. System Board
LCD backlight intensity not
adjustable.
1. LCD Assembly
2. Switch and LED Card
3. System Board
LCD contrast not adjustable.
1. LCD Assembly
2. System Board
3. Switch and LED Card
System hang or intermittent
hang.
(See “Undetermined
Problems” on page 301
before replacing any FRUs.)
1. Press Reset Button
2. System Board
3. Operating System
The computer does not
suspend or resume.
1. System Board
The computer does not
power off.
1. Press Reset Button
2. System Board
Real-time clock inaccurate.
1. Backup Battery
2. System Board
Printer problems.
(See “Printer Checkout” on
page 468.)
1. System Board
2. Parallel Port Device
Cable
Serial or parallel port device
problems.
1. Device
2. Device Cable
3. System Board
LED incorrectly remains off,
but computer runs OK.
1. Switch and LED Card
2. System Board
300
IBM Mobile Systems HMM - Volume 1
Summary of Contents for N51 Series
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Page 8: ...vi IBM Mobile Systems HMM Volume 1 ...
Page 12: ...x IBM Mobile Systems HMM Volume 1 ...
Page 34: ...22 IBM Mobile Systems HMM Volume 1 ...
Page 55: ...Parts Listing 1 2 3 4 5 6 7 8 9 10 11 12 14 15 16 13 17 18 Model L40 SX 8543 43 ...
Page 83: ...Parts Listing 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Model N45SL 2614 71 ...
Page 114: ...Model N51 Exploded View continued 2 3 4 5 6 7 102 IBM Mobile Systems HMM Volume 1 ...
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Page 156: ...144 IBM Mobile Systems HMM Volume 1 ...
Page 174: ...B D A C E F H G 162 IBM Mobile Systems HMM Volume 1 ...
Page 175: ...Model P70 P75 Exploded View continued A Model P70 and P75 8573 163 ...
Page 176: ...Model P70 P75 Exploded View continued B C 164 IBM Mobile Systems HMM Volume 1 ...
Page 177: ...Model P70 P75 Exploded View continued D E Model P70 and P75 8573 165 ...
Page 178: ...Model P70 P75 Exploded View continued F 166 IBM Mobile Systems HMM Volume 1 ...
Page 179: ...Model P70 P75 Exploded View continued G Model P70 and P75 8573 167 ...
Page 180: ...Model P70 P75 Exploded View continued H1 Model P75 168 IBM Mobile Systems HMM Volume 1 ...
Page 181: ...Model P70 P75 Exploded View continued H2 Model P70 Model P70 and P75 8573 169 ...
Page 184: ...Parts Listing P70 1 2 3 4 5 6 7 8 9 10 11 15 12 13 14 16 172 IBM Mobile Systems HMM Volume 1 ...
Page 194: ...182 IBM Mobile Systems HMM Volume 1 ...
Page 211: ...Exploded View 21 11 20 10 1 2 3 4 5 6 7 8 9 13 14 15 16 17 18 19 12 ThinkPad 300 2615 199 ...
Page 213: ...Parts Listing 1 2 3 4 5 6 7 9 8 10 11 12 ThinkPad 300 2615 201 ...
Page 216: ...204 IBM Mobile Systems HMM Volume 1 ...
Page 235: ...ThinkPad 350 Exploded View ThinkPad 350 PS Note 425 2618 223 ...
Page 236: ...ThinkPad 350 Exploded View continued 31 32 33 34 35 36 37 224 IBM Mobile Systems HMM Volume 1 ...
Page 262: ...ThinkPad 500 Exploded View 250 IBM Mobile Systems HMM Volume 1 ...
Page 265: ...Parts Listing 1 2 3 4 5 6 7 8 9 10 11 ThinkPad 500 2603 253 ...
Page 268: ...256 IBM Mobile Systems HMM Volume 1 ...
Page 290: ...ThinkPad 510 Exploded View 2A 13 14 15 2B 278 IBM Mobile Systems HMM Volume 1 ...
Page 294: ...Parts Listing 1 2 3 4 5 6 7 8 9 10 11 282 IBM Mobile Systems HMM Volume 1 ...
Page 295: ...Parts Listing continued 12 13 14 ThinkPad 510 2604 283 ...
Page 318: ...ThinkPad 710T Exploded View 306 IBM Mobile Systems HMM Volume 1 ...
Page 349: ...Parts Listing 1 2 4 5 6 7 2 3 3 8 Expansion Unit 3550 337 ...
Page 390: ...378 IBM Mobile Systems HMM Volume 1 ...
Page 398: ...Parts Listing 1 2 3 4 5 7 8 9 6 2 8 13 10 11 12 6 386 IBM Mobile Systems HMM Volume 1 ...
Page 445: ...Dock II 3546 433 ...
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Page 502: ...IBM Part Number 30H2356 Printed in U S A S82G 15ð1 ð1 ...
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