Acer Travelmate 550 Service Guide

Chapter 583
JP7 FDD.PRT
JP6 KBD
JP4 HEADERX 50
PIN NOSignalPIN NOSignal
1. +5VS 2. INDEX#
3. +5VS 4. DRV0#
5. +5VS 6. DSKCHG#
7. NC 8. NC
9. NC 10. MTR0#
11. NC 12. FDDIR#
13. 3MODE# 14. STEP#
15. NC 16. NC
17. GND 18. WGARE#
19. GND 20. TRACK0#
21. GND 22. WP#
23. GND 24. RDATA#
25. GND 26. HDSEL#
PIN NOSignalPIN NOSignal
1. KSO15 2. KSO10
3. KSO11 4. KSO14
5. KSO13 6. KSO12
7. KSO3 8. KSO6
9. KS08 10. KSO7
11. KS04 12. KSO2
13. KSI0 14. KSO1
15. KSO5 16. KSI3
17. KSI2 18. KSO0
19. KS15 20. KSI4
21....

84Chapter 5
SW1 Settings (Lid switch)
SW2 Settings 
25. IAC_SDATAI 26. IAC_RST#
27. GND 28. BATT_LOW_LED#
29. GND 30. DM_ON
31. DM_ON# 32. GND
33. BATT_CHGI_LED# 34. NC
35. MD_SPK 36. NC
37. MONO IN R 38. CD_AGND
39. CD_AGND 40. CDROM_L
41. CD_AGND 42. +3VS
43. NC 44. +5VCD
45. +5VCD 46. +5VCD
47. NC 48. +5VAW
49. +5VS 50. +5VS
Setting
Switch 1 NONE 
Switch 2 STAND BY
Switch 3 HIBERNATE
Switch 4 ON/OFF BUTTON
SW2Setting
POWER BUTTON ON:SYSTEM ON
OFF: SYSTEM OFF
PIN NOSignalPIN NOSignal 

Chapter 585
Bottom View
JP12 1394.PRT
U38 PGA370
JP12 1394 Connector JP21 CPU fan connector
U38 CPU socket for FC-PGA370 JP19 PCMCIA socket connector
JP14 CD-ROM connector PJP1 Battery connector
JP10 Print port connector PJP2 AC adapter input connector
JP9 CRT connector JP18 PS/2 keyboard and PS/2 mouse 
connector
JP8 TV out connector for S-video only JP15 USB connector
JP22 HDD connector JP13 USB connector
JP20 So-DIMM connector for SDRAM only JP17 Mini PCI connector
PIN NOSignalPIN NOSignal
1. 10TPBO...

86Chapter 5
A7 D43# AE1 A17#
A9 D37# AE3 A22#
A11 D44# AE5 VccCORE
A13 D51# AE33 A20M#
A15 D47# AE55 IERR#
A17 D48# AE37 FLUSH#
A19 D57# AF2 VccCORE
A21 D46# AF4 A35#
A23 D53# AF6 A25
A25 D60# AF32 GND
A27 D61# AF34 VccCORE
A29 DEP7# AF36 GND
A31 DEP3# AG1 EDGCTRL5
A33 DEP2# AG3 A19#
A35 PRDY# AG5 GND
A37 GND AG33 INIT#
AA1 A27# AG35 STPCLK#
AA3 A30# AG37 IGNNE#
AA5 VccCORE AH2 GND
AA33 VTT4 AH4 RESET#2
AA35 VTT4 AH6 A10#
AA37 VccCORE AH8 A5#
AB2 VccCORE AH10 A8#
AB4 A24# AH12 A4#
AB6 A23# AH14 BNR#
AB32...

Chapter 587
AJ21 VccCORE AL27 BDSY#
AJ23 GND AL29 THERMDN
AJ25 VccCORE AL31 THERMDP
AJ27 GND AL33 TCK
AJ29 VccCORE AL35 VID0
AJ31 BSEL1 AL37 VID2
AJ33 BSEL0 AM26 Reserved
AJ35 SMI# AM4 Vcccore
AJ37 VID3 AM6 GDN
AK2 VccCORE AM8 Vcccore
AK4 GND AM10 GDN
AK6 A28# AM12 Vcccore
AK8 A3# AM14 GDN
AK10 A11# AM16 Vcccore
AK12 VREF6 AM18 GDN
AK14 A14# AM20 VccCORE
AK16 VTT AM22 GDN
AK18 REQ0# AM24 VccCORE
AK20 LOCK# AM26 GDN
AK22 VREF7# AM28 VccCORE
AK24 AERR# AM30 GDN
AK26 PWRGOOD AM32 VccCORE
AK28 RS2# AM34 GDN...

88Chapter 5
B10 VccCORE D16 D52#
B12 GND D18 GND
B14 VccCORE D20 VccCORE
B16 GND D22 GND
B18 VccCORE D24 VccCORE
B20 GND D26 GND
B22 VccCORE D28 VccCORE
B24 GND D30 GND
B26 VccCORE D32 VccCORE
B28 GND D34 GND
B30 VccCORE D36 VccCORE
B32 GND E1 D26#
B34 VccCORE E3 D25#
B36 BINIT# E5 VccCORE
C1 D33# E7 GND
C3 VccCORE E9 VccCORE
C5 D31# E11 GND
C7 D34# E13 VccCORE
C9 D36# E15 GND
C11D45#E17VccCORE
C13 D49# E19 GND
C15 D40# E21 RESERVED
C17 D59# E23 VTT4
C19 D55# E25 D62#
C21 D54# E27 SLEWCTRL
C23 D58# E29...

Chapter 589
F34 VccCORE N5 VccCORE
F36 GND N33 Reserved
G1 D21# N35 Reserved
G3 D23# N37 Reserved
G5 GND P2 VccCORE
G33 BP2# P4 D18#
G35 VTT P6 D9#
G37 Reserved P32 GND
H2 GND P34 VccCORE
H4 D16# P36 GND
H6 D19# Q1 D12#
H32 VccCORE Q3 D10#
H34 GND Q5 GND
H36 VccCORE Q33 Reserved
J1 D7# Q35 Reserved
J3 D30# Q37 Reserved
J5 VccCORE R2 Reserved
J33 PICCLK R4 D17#
J35 PICD0 R6 VREF3
J37 PREQ# R32 VccCORE
R34 GND V36 VccCORE
R36 VccCORE W1 D0#
S1 D8# W3 A34#
S3 D5# W5 VccCORE
S5 VccCORE W33 PLL1
S33 VTT4 W35...

90Chapter 5
JP14 CD.PRT
JP10 LPTCN-25.PRT
JP9 CRT CONN..PRT
PIN NOSignalPIN NOSignal
1. INT_CD_L 2. INT_CD_R
3. CD_AGND 4. GND
5. SIDERST# 6. CDD8
7. CDD7 8. CDD9
9. CDD6 10. CDD10
11. CDD5 12. CDD11
13. CDD4 14. CDD12
15. CDD3 16. CDD13
17. CDD2 18. CDD14
19. CDD1 20. CDD15
21. CDD0 22. CD_DREQ
23. GND 24. CD_SIOR#
25. CD_SIOW 26. GND
27. CD_SIORY 28. CD_DACK#
29. CD_IRQ 30. NC
31. CD_SBA1 32. PDIAG#
33. CD_SBA0 34. CD_SBA2
35. CD_SCS1# 36. CD_SCS3#
37. SHDD_LED# 38. +5VCD
39. +50CD 40. +50CD
41. +50CD...

Chapter 591
JP8 S CONN..PRT
JP22 HDD
JP20 144 SODIMMI.PRT
15. DDCC
PIN NOSignalPIN NOSignal
1. GND 2. N.C.
3. GND 4. LUMA
5. NC 6. CRMA
7. COMPS
PIN NOSignalPIN NOSignal
1. PIDERST# 2. GND
3. PBD7 4. PBD8
5. PBD6 6. PBD9
7. PBD5 8. PBD10
9. PBD4 10. PBD11
11. PBD3 12. PBD12
13. PBD2 14. PBD13
15. PBD1 16. PBD14
17. PBD0 18. PBD15
19. GND 20. NC
21. PBDREQ 22. NC
23. PBIOW# 24. GND
25. PBDIOR# 26. GND
27. PBIORDY 28. PCSEL
29. PBDACK# 30. GND
31. IRQ14 32. NC
33. PBA1 34. NC
35. PBA0 36. PBA2
37. PBCS1#...

92Chapter 5
17. MD6 18. MD14
19. MD7 20. MD15
21. GND 22. GND
23. RCAS#0 24. RCAS#1
25. RCAS#4 26. RCAS#5
27. +3V 28. +3V
29. MMA0 30. MMA3
31. MMA1 32. MMA4
33. MMA2 34. MMA5
35. GND 36. GND
37. MD32 38. MD40
39. MD33 40. MD41
41. MD34 42. MD42
43. MD35 44. MD43
45. +3V 46. +3V
47. MD36 48. MD44
49. MD37 50. MD45
51. MD38 52. MD46
53. MD39 54. MD47
55. GND 56. GND
57. NC 58. NC
59. NC 60. NC
61. CLK_SDRAM2 62. CKE2
63. +3V 64. +3V
65. SRASA# 66. SCASA#
67. RMWEA# 68. CKE3
69. RRAS#2 70. MMA14
71. RRAS#3...