Lenovo ThinkPad 770X Hardware Maintenance Manual for 770 series notebooks(Janu - Page 61

ROM to RAM, DC-DC Card

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SYMPTOM-TO-FRU INDEX Symptom / Error 2XX 201: Memory data error. 202: Memory line error 00-15. 203: Memory line error 16-23. 205: Memory test failure on on-board memory. 221: ROM to RAM remap error. 301, 303, 304, 305, 3XX (301: Keyboard error.) 601, 6XX (601: Diskette drive or controller error.) 602 (Diskette read error.) 604 (Unacceptable ID was read from the diskette drive.) 808X 8081: PCMCIA presence test failure. (PCMCIA revision number also checked.) 8082: PCMCIA register test failure. FRU / Action in Sequence 1. Go to "Memory Checkout" on page 33. 2. DIMM card 3. System board 1. Go to "Keyboard or Auxiliary Input Device Checkout" on page 32. 2. Keyboard 3. External numeric keypad 4. External keyboard 5. Keyboard/mouse cable 6. System board 7. DC-DC Card 1. Go to "Diskette Drive Checkout" on page 31. 2. Diskette drive assembly 3. Diskette 4. System board 1. Go to "Diskette Drive Checkout" on page 31. 2. Diskette 3. Diskette drive assembly 1. Go to "Diskette Drive Checkout" on page 31. 2. Diskette drive assembly 3. System board 1. Reseat the PC Card slot assembly. 2. PCMCIA device 3. System board ThinkPad 770, 770E, 770X and 770Z 55

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SYMPTOM-TO-FRU INDEX
Symptom / Error
FRU / Action in Sequence
2XX
201: Memory data
error.
202:
Memory line error
00–15.
203:
Memory line error
16–23.
205: Memory test
failure on on-board
memory.
221:
ROM to RAM
remap error.
1.
Go to “Memory
Checkout” on
page 33.
2.
DIMM card
3.
System board
301, 303, 304, 305, 3XX
(301: Keyboard error.)
1.
Go to “Keyboard or
Auxiliary Input
Device Checkout” on
page 32.
2.
Keyboard
3.
External numeric
keypad
4.
External keyboard
5.
Keyboard/mouse cable
6.
System board
7.
DC-DC Card
601, 6XX
(601:
Diskette drive or
controller error.)
1.
Go to “Diskette Drive
Checkout” on
page 31.
2.
Diskette drive
assembly
3.
Diskette
4.
System board
602
(Diskette read error.)
1.
Go to “Diskette Drive
Checkout” on
page 31.
2.
Diskette
3.
Diskette drive
assembly
604
(Unacceptable ID was read
from the diskette drive.)
1.
Go to “Diskette Drive
Checkout” on
page 31.
2.
Diskette drive
assembly
3.
System board
808X
8081: PCMCIA
presence test failure.
(PCMCIA revision
number also checked.)
8082: PCMCIA register
test failure.
1.
Reseat the PC Card
slot assembly
.
2.
PCMCIA device
3.
System board
ThinkPad 770, 770E, 770X and 770Z
55