Hardware Maintenance Manual
Page 5
About this manual along with the advanced diagnostic tests to troubleshoot problems effectively. ThinkPad T420 and T420i Machine Type 4177, 4178, 4179, 4180, 4236, 4237, and 4238 Use this manual This manual contains service and reference information for ... the information under Chapter 1 "Safety information" on page 1 and Chapter 2 "Important service information" on page 23. © Copyright Lenovo 2012 iii Use this manual along with ThinkPad products. Before servicing a ThinkPad product, be sure to troubleshoot problems. Important: This manual is intended only for the following...
About this manual along with the advanced diagnostic tests to troubleshoot problems effectively. ThinkPad T420 and T420i Machine Type 4177, 4178, 4179, 4180, 4236, 4237, and 4238 Use this manual This manual contains service and reference information for ... the information under Chapter 1 "Safety information" on page 1 and Chapter 2 "Important service information" on page 23. © Copyright Lenovo 2012 iii Use this manual along with ThinkPad products. Before servicing a ThinkPad product, be sure to troubleshoot problems. Important: This manual is intended only for the following...
Hardware Maintenance Manual
Page 141
c See "Miscellaneous parts" on page 155.) 2 ThinkPad b/g/n Wireless (1x1 BGN) 60Y3247 • 4177-CTO, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx,... PQx, QDx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 2 Intel® Centrino® Wireless-N 1000 60Y3241 • 4177-CTO, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 32x, 33x, 34x, QGx, QJx, QKx, QLx, QMx, QPx, QTx...P8x, PCx, PDx, PEx, PJx • 4237-CTO • 4238-CTO 2 Intel Centrino Advanced-N 6205 (2x2 AGN) 60Y3253 • 4177-CTO, 22x, 23x, 24x, 2Nx, 2Px, 35x, Q2x, Q4x, Q5x, QHx, QNx, R8x, RAx, RKx, RLx, RMx, RWx...
c See "Miscellaneous parts" on page 155.) 2 ThinkPad b/g/n Wireless (1x1 BGN) 60Y3247 • 4177-CTO, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx,... PQx, QDx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 2 Intel® Centrino® Wireless-N 1000 60Y3241 • 4177-CTO, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 32x, 33x, 34x, QGx, QJx, QKx, QLx, QMx, QPx, QTx...P8x, PCx, PDx, PEx, PJx • 4237-CTO • 4238-CTO 2 Intel Centrino Advanced-N 6205 (2x2 AGN) 60Y3253 • 4177-CTO, 22x, 23x, 24x, 2Nx, 2Px, 35x, Q2x, Q4x, Q5x, QHx, QNx, R8x, RAx, RKx, RLx, RMx, RWx...
Hardware Maintenance Manual
Page 143
Parts list 137 Parts list-Overall (continued) No. Table 9. FRU (Overall) FRU no. 3 4-GB DDR3-1333 SDRAM SO-DIMM (PC3-10600) card 55Y3717 • 4177-CTO, 27x, 29x, 2Ax, 2Bx, 2Cx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx, 32x, 33x, 34x, 35x, Q3x, Q5x, ..., PNx, PPx, PQx, PRx, PSx, PTx, PUx, PVx, PWx, PXx, PYx • 4237-CTO • 4238-CTO 4 Keyboard bezel assembly with fingerprint reader 04W1371 • 4177-CTO, 27x, 29x, 2Ax, 2Bx, 2Cx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx, 32x, 33x, 34x, 35x, 37x, 38x...
Parts list 137 Parts list-Overall (continued) No. Table 9. FRU (Overall) FRU no. 3 4-GB DDR3-1333 SDRAM SO-DIMM (PC3-10600) card 55Y3717 • 4177-CTO, 27x, 29x, 2Ax, 2Bx, 2Cx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx, 32x, 33x, 34x, 35x, Q3x, Q5x, ..., PNx, PPx, PQx, PRx, PSx, PTx, PUx, PVx, PWx, PXx, PYx • 4237-CTO • 4238-CTO 4 Keyboard bezel assembly with fingerprint reader 04W1371 • 4177-CTO, 27x, 29x, 2Ax, 2Bx, 2Cx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx, 32x, 33x, 34x, 35x, 37x, 38x...
Hardware Maintenance Manual
Page 144
..., QJx, QKx, QLx • 4237-CTO • 4238-CTO FRU no. 4 Keyboard bezel assembly without fingerprint reader 04W1372 • 4177-CTO, 25x, 26x, 28x, Q5x, QGx, QJx, QKx, QLx, QMx, QSx, R2x, R3x, RVx, • 4178-CTO,...4236-CTO, 62x, 64x, 65x, N6x, N7x • 4237-CTO • 4238-CTO 5 Modem daughter card (MDC) 60Y3207 • 4177-CTO, 22x, 23x, 24x, 25x, 29x, 2Ax, 2Bx, 2Cx, 2Ex, 2Jx, 2Xx, 36x, 37x, GFx, GKx, GLx, GMx... assembly 04W1633 04W1634 7 Magnesium structure frame assembly 04W1629 CRU ID N N N N 138 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9.
..., QJx, QKx, QLx • 4237-CTO • 4238-CTO FRU no. 4 Keyboard bezel assembly without fingerprint reader 04W1372 • 4177-CTO, 25x, 26x, 28x, Q5x, QGx, QJx, QKx, QLx, QMx, QSx, R2x, R3x, RVx, • 4178-CTO,...4236-CTO, 62x, 64x, 65x, N6x, N7x • 4237-CTO • 4238-CTO 5 Modem daughter card (MDC) 60Y3207 • 4177-CTO, 22x, 23x, 24x, 25x, 29x, 2Ax, 2Bx, 2Cx, 2Ex, 2Jx, 2Xx, 36x, 37x, GFx, GKx, GLx, GMx... assembly 04W1633 04W1634 7 Magnesium structure frame assembly 04W1629 CRU ID N N N N 138 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9.
Hardware Maintenance Manual
Page 145
Parts list 139 Parts list-Overall (continued) No. FRU (Overall) FRU no. 8 DVD-RAM/RW drive 75Y5115 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 75Y5113 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, ..., Q6x, Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QGx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 8 DVD-ROM drive • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 75Y5117 CRU ID * * Chapter 10. Table 9.
Parts list 139 Parts list-Overall (continued) No. FRU (Overall) FRU no. 8 DVD-RAM/RW drive 75Y5115 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 75Y5113 2Fx, 2Gx, 2Hx, 2Jx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, ..., Q6x, Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QGx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO 8 DVD-ROM drive • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 75Y5117 CRU ID * * Chapter 10. Table 9.
Hardware Maintenance Manual
Page 146
...LPx, LQx • 4236-CTO, NEx, NDx • 4237-CTO • 4238-CTO 60Y5512 9 Audio sub card • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238...-CTO 04W1623 10 Audio sub card cable • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO •... NGx, NHx, NKx, NLx, NMx, NNx, NPx, NQx, NRx, NSx, NTx, CRU ID * N N N N 140 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No. Table 9.
...LPx, LQx • 4236-CTO, NEx, NDx • 4237-CTO • 4238-CTO 60Y5512 9 Audio sub card • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238...-CTO 04W1623 10 Audio sub card cable • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO •... NGx, NHx, NKx, NLx, NMx, NNx, NPx, NQx, NRx, NSx, NTx, CRU ID * N N N N 140 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No. Table 9.
Hardware Maintenance Manual
Page 147
... • 4236-CTO • 4237-CTO • 4238-CTO 04W1632 13 Battery pack, Li-ion (4-cell) 55 • 4177-CTO, 2Dx, GFx, GKx, QMx, RRx, RSx, RTx, RUx • 4178-CTO, 66x, 67x, 68x, 9Fx, ...4236-CTO • 4237-CTO • 4238-CTO 42T4883 42T4885 13 Battery pack, Li-ion (6-cell) 55+ 42T4791 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Ex, 2Fx, 42T4793 2Gx, 2Hx...PJx, PLx, PPx, PQx, QFx • 4237-CTO • 4238-CTO 12 I/O sub card (1394 and USB) 04W1631 • 4177-CTO, 2Fx, 2Gx, 2Hx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx,...
... • 4236-CTO • 4237-CTO • 4238-CTO 04W1632 13 Battery pack, Li-ion (4-cell) 55 • 4177-CTO, 2Dx, GFx, GKx, QMx, RRx, RSx, RTx, RUx • 4178-CTO, 66x, 67x, 68x, 9Fx, ...4236-CTO • 4237-CTO • 4238-CTO 42T4883 42T4885 13 Battery pack, Li-ion (6-cell) 55+ 42T4791 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Ex, 2Fx, 42T4793 2Gx, 2Hx...PJx, PLx, PPx, PQx, QFx • 4237-CTO • 4238-CTO 12 I/O sub card (1394 and USB) 04W1631 • 4177-CTO, 2Fx, 2Gx, 2Hx, 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux, 2Vx, 2Wx, 2Yx,...
Hardware Maintenance Manual
Page 148
... P2x, PFx, PKx, PNx, PRx • 4237-CTO • 4238-CTO 42T4799 42T4801 42T4912 14 Base cover assembly • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-...CTO 04W1626 14 Base cover assembly (Taiwan 90 W) 04W1627 • 4177-CTO, RRx, RSx, RTx, RUx • 4178-CTO, 5Fx, 5Hx, 9Hx, 9Jx, 9Kx, 9Lx, 9Mx, 9Nx, A5x, A6x,...• 4236-CTO, 64x, 65x, NVx, PRx • 4237-CTO • 4238-CTO 142 ThinkPad T420 and T420i Hardware Maintenance Manual CRU ID * * N N
... P2x, PFx, PKx, PNx, PRx • 4237-CTO • 4238-CTO 42T4799 42T4801 42T4912 14 Base cover assembly • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-...CTO 04W1626 14 Base cover assembly (Taiwan 90 W) 04W1627 • 4177-CTO, RRx, RSx, RTx, RUx • 4178-CTO, 5Fx, 5Hx, 9Hx, 9Jx, 9Kx, 9Lx, 9Mx, 9Nx, A5x, A6x,...• 4236-CTO, 64x, 65x, NVx, PRx • 4237-CTO • 4238-CTO 142 ThinkPad T420 and T420i Hardware Maintenance Manual CRU ID * * N N
Hardware Maintenance Manual
Page 149
...-CTO, N6x • 4236-CTO • 4237-CTO • 4238-CTO 60Y3257 17 Integrated Mobile Broadband (Gobi 3000 3G with GPS for Malaysia) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 60Y3283 17 Integrated Mobile Broadband... PMx, PPx, PRx, PTx, PWx, PZx, Q2x, Q3x, Q4x • 4237-CTO • 4238-CTO 17 Integrated Mobile Broadband (Ericsson F5521gw for Malaysia) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 60Y3267 CRU ID N ** Chapter 10....
...-CTO, N6x • 4236-CTO • 4237-CTO • 4238-CTO 60Y3257 17 Integrated Mobile Broadband (Gobi 3000 3G with GPS for Malaysia) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 60Y3283 17 Integrated Mobile Broadband... PMx, PPx, PRx, PTx, PWx, PZx, Q2x, Q3x, Q4x • 4237-CTO • 4238-CTO 17 Integrated Mobile Broadband (Ericsson F5521gw for Malaysia) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 60Y3267 CRU ID N ** Chapter 10....
Hardware Maintenance Manual
Page 150
...-CTO • 4238-CTO 18 HDD rubber rails 18 HDD rubber rails (7.0 mm-high HDD rubber rails for 9.5 mm-high bay) 18 SSD spacers • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 19 SATA hard disk drive,... 4177-CTO, 2Cx, GKx • 4178-CTO, ACx • 4179-CTO • 4180-CTO, LHx, LMx, LVx, Q9x • 4236-CTO, NGx, PJx, QAx, QBx, QFx, QGx • 4237-CTO • 4238-CTO FRU no. 60Y3261 60Y3239 45N8259 41V9756 04W1640 04W1641 45N7217 45N7229 45N7305 45N7285 42T1153 42T1167 CRU ID ** ** ** * * * * 144 ThinkPad T420 and...
...-CTO • 4238-CTO 18 HDD rubber rails 18 HDD rubber rails (7.0 mm-high HDD rubber rails for 9.5 mm-high bay) 18 SSD spacers • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 19 SATA hard disk drive,... 4177-CTO, 2Cx, GKx • 4178-CTO, ACx • 4179-CTO • 4180-CTO, LHx, LMx, LVx, Q9x • 4236-CTO, NGx, PJx, QAx, QBx, QFx, QGx • 4237-CTO • 4238-CTO FRU no. 60Y3261 60Y3239 45N8259 41V9756 04W1640 04W1641 45N7217 45N7229 45N7305 45N7285 42T1153 42T1167 CRU ID ** ** ** * * * * 144 ThinkPad T420 and...
Hardware Maintenance Manual
Page 151
... KLx, KNx, MCx • 4236-CTO • 4237-CTO • 4238-CTO 45N7221 * 45N7309 19 SATA hard disk drive, 160 GB, 7200 rpm • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 45N7251 * 45N7271 45N7317 45N7323 42T1157 ...42T1169 19 SATA hard disk drive, 250 GB, 7200 rpm • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 42T1163 * 42T1173 19 SATA hard...
... KLx, KNx, MCx • 4236-CTO • 4237-CTO • 4238-CTO 45N7221 * 45N7309 19 SATA hard disk drive, 160 GB, 7200 rpm • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 45N7251 * 45N7271 45N7317 45N7323 42T1157 ...42T1169 19 SATA hard disk drive, 250 GB, 7200 rpm • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 42T1163 * 42T1173 19 SATA hard...
Hardware Maintenance Manual
Page 152
... • 4236-CTO, NHx, P3x, P4x, P7x, Q3x • 4237-CTO • 4238-CTO 45N8081 45N8007 45N7981 19 Solid state drive, 160 GB 45N8057 • 4177-CTO, 28x, GLx • 4178-CTO, 5Rx, 5Sx, 5Zx, 97x, 98x, AYx, AZx, B4x, BFx, BSx, C7x, CHx, D2x, DAx, DXx • ...P8x, Q2x • 4237-CTO • 4238-CTO 19 Solid state flash drive, 4 GB • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 45N8085 CRU ID * * * * 146 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9. Parts list-Overall (continued) No.
... • 4236-CTO, NHx, P3x, P4x, P7x, Q3x • 4237-CTO • 4238-CTO 45N8081 45N8007 45N7981 19 Solid state drive, 160 GB 45N8057 • 4177-CTO, 28x, GLx • 4178-CTO, 5Rx, 5Sx, 5Zx, 97x, 98x, AYx, AZx, B4x, BFx, BSx, C7x, CHx, D2x, DAx, DXx • ...P8x, Q2x • 4237-CTO • 4238-CTO 19 Solid state flash drive, 4 GB • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237-CTO • 4238-CTO 45N8085 CRU ID * * * * 146 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9. Parts list-Overall (continued) No.
Hardware Maintenance Manual
Page 153
...QLx • 4237-CTO • 4238-CTO 21 System board assembly, integrated graphics, AMT, non-TPM • 4177-CTO, 37x • 4178-CTO • 4179-CTO • 4180-CTO, QAx • 4236-CTO ...8226; 4237-CTO • 4238-CTO 04W2046 21 System board assembly, integrated graphics, non-AMT, TPM 04W2047 • 4177-CTO, 25x, 26x, 27x, 28x, 29x, 2Dx, 2Ex, 2Qx, 2Rx, 2Sx, 35x, 36x, 38x, GKx,...QLx • 4237-CTO • 4238-CTO 21 System board assembly, integrated graphics, non-AMT, non-TPM • 4177-CTO, 2Fx, 2Gx • 4178-CTO, 9Vx, 9Wx, 9Yx, AKx, AJx, ADx, 6Tx • 4179-...
...QLx • 4237-CTO • 4238-CTO 21 System board assembly, integrated graphics, AMT, non-TPM • 4177-CTO, 37x • 4178-CTO • 4179-CTO • 4180-CTO, QAx • 4236-CTO ...8226; 4237-CTO • 4238-CTO 04W2046 21 System board assembly, integrated graphics, non-AMT, TPM 04W2047 • 4177-CTO, 25x, 26x, 27x, 28x, 29x, 2Dx, 2Ex, 2Qx, 2Rx, 2Sx, 35x, 36x, 38x, GKx,...QLx • 4237-CTO • 4238-CTO 21 System board assembly, integrated graphics, non-AMT, non-TPM • 4177-CTO, 2Fx, 2Gx • 4178-CTO, 9Vx, 9Wx, 9Yx, AKx, AJx, ADx, 6Tx • 4179-...
Hardware Maintenance Manual
Page 154
...PFx, PKx, PNx, PRx, PYx, Q7x, Q8x • 4237-CTO • 4238-CTO 04W2049 21 System board assembly, discrete graphics, AMT, non-TPM • 4177-CTO • 4178-CTO, AXx • 4179-CTO • 4180-CTO, MZx • 4236-CTO • 4237-CTO • 4238-CTO 04W2050 21 System ...-CTO • 4238-CTO 21 System board assembly, discrete graphics, non-AMT, non-TPM • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO, 9Sx, 9Tx, 9Ux, 9Xx, AEx • 4236-CTO • 4237-CTO • 4238-CTO 04W2052 CRU ID N N N N 148 ThinkPad T420 and T420i Hardware Maintenance Manual
...PFx, PKx, PNx, PRx, PYx, Q7x, Q8x • 4237-CTO • 4238-CTO 04W2049 21 System board assembly, discrete graphics, AMT, non-TPM • 4177-CTO • 4178-CTO, AXx • 4179-CTO • 4180-CTO, MZx • 4236-CTO • 4237-CTO • 4238-CTO 04W2050 21 System ...-CTO • 4238-CTO 21 System board assembly, discrete graphics, non-AMT, non-TPM • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO, 9Sx, 9Tx, 9Ux, 9Xx, AEx • 4236-CTO • 4237-CTO • 4238-CTO 04W2052 CRU ID N N N N 148 ThinkPad T420 and T420i Hardware Maintenance Manual
Hardware Maintenance Manual
Page 155
..., PBx, Q6x, Q7x, QFx • 4237-CTO • 4238-CTO 22 CPU assembly, i5-2540M (2.60 GHz) • 4177-CTO, 2Gx, 2Px, Q2x, Q4x, QLx, RLx, RMx • 4178-CTO, 54x, 55x, 57x, 59x, 5Wx, 6Px,...QEx, QGx, QHx • 4237-CTO • 4238-CTO 04W0493 22 CPU assembly, i7-2620M (2.70 GHz) 04W0494 • 4177-CTO, 2Hx, 2Jx, QBx • 4178-CTO, 5Xx, 5Yx, 67x, 6Ax, 6Gx, 6Wx, 99x, 9Mx, 9Sx, A4x... P2x, P9x, PEx, PKx • 4237-CTO • 4238-CTO 22 CPU assembly, i7-2640M (2.80 GHz) • 4177-CTO, RKx • 4178-CTO, C5x, C9x, CAx, DJx • 4179-CTO • 4180-CTO, PRx, PSx, PTx...
..., PBx, Q6x, Q7x, QFx • 4237-CTO • 4238-CTO 22 CPU assembly, i5-2540M (2.60 GHz) • 4177-CTO, 2Gx, 2Px, Q2x, Q4x, QLx, RLx, RMx • 4178-CTO, 54x, 55x, 57x, 59x, 5Wx, 6Px,...QEx, QGx, QHx • 4237-CTO • 4238-CTO 04W0493 22 CPU assembly, i7-2620M (2.70 GHz) 04W0494 • 4177-CTO, 2Hx, 2Jx, QBx • 4178-CTO, 5Xx, 5Yx, 67x, 6Ax, 6Gx, 6Wx, 99x, 9Mx, 9Sx, A4x... P2x, P9x, PEx, PKx • 4237-CTO • 4238-CTO 22 CPU assembly, i7-2640M (2.80 GHz) • 4177-CTO, RKx • 4178-CTO, C5x, C9x, CAx, DJx • 4179-CTO • 4180-CTO, PRx, PSx, PTx...
Hardware Maintenance Manual
Page 156
... NLx, NXx, NYx • 4237-CTO • 4238-CTO 22 CPU assembly, Intel Dual Core i3-2330M (2.20 GHz) • 4177-CTO, QVx, QWx, QXx, R9x, RBx, RCx, RDx • 4178-CTO, AZx, B2x, B3x, B4x, BGx, BKx, BPx...• 4236-CTO • 4237-CTO • 4238-CTO 22 PU assembly, Intel Dual Core i3-2370M (2.40 GHz) • 4177-CTO, 32x, RYx, RZx • 4178-CTO, CKx, CLx, CMx, CNx, CPx, D5x, DRx, DSx, DTx, DUx, ... 4238-CTO FRU no. 04W0495 04W1891 04W1892 04W4094 04W0496 04W1893 CRU ID N N N N N N 150 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No. Table 9.
... NLx, NXx, NYx • 4237-CTO • 4238-CTO 22 CPU assembly, Intel Dual Core i3-2330M (2.20 GHz) • 4177-CTO, QVx, QWx, QXx, R9x, RBx, RCx, RDx • 4178-CTO, AZx, B2x, B3x, B4x, BGx, BKx, BPx...• 4236-CTO • 4237-CTO • 4238-CTO 22 PU assembly, Intel Dual Core i3-2370M (2.40 GHz) • 4177-CTO, 32x, RYx, RZx • 4178-CTO, CKx, CLx, CMx, CNx, CPx, D5x, DRx, DSx, DTx, DUx, ... 4238-CTO FRU no. 04W0495 04W1891 04W1892 04W4094 04W0496 04W1893 CRU ID N N N N N N 150 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No. Table 9.
Hardware Maintenance Manual
Page 158
Parts list-Overall (continued) No. FRU (Overall) FRU no. 25 SmartCard Reader 04W1638 • 4177-CTO, 2Fx, 2Gx, 2Hx, 37x, 38x, Q8x, QBx, QPx, R9x, RBx, RCx, RLx, RMx, 04W2084 RRx, RSx, ...CTO, N3x, NDx, NEx, PDx, PJx, PKx, PMx, PPx, PQx • 4237-CTO • 4238-CTO 26 Fan assembly, integrated 04W0407 • 4177-CTO, 23x, 27x, 28x, 29x, 2Ax, 2Bx, 2Fx, 2Gx, 2Jx, 2Mx, 2Rx, 2Sx, 2Xx, 04W0409 32x, 33x, 35x, GKx, GLx, GMx... Q6x, Q9x, QAx, QCx, QDx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO CRU ID N N 152 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9.
Parts list-Overall (continued) No. FRU (Overall) FRU no. 25 SmartCard Reader 04W1638 • 4177-CTO, 2Fx, 2Gx, 2Hx, 37x, 38x, Q8x, QBx, QPx, R9x, RBx, RCx, RLx, RMx, 04W2084 RRx, RSx, ...CTO, N3x, NDx, NEx, PDx, PJx, PKx, PMx, PPx, PQx • 4237-CTO • 4238-CTO 26 Fan assembly, integrated 04W0407 • 4177-CTO, 23x, 27x, 28x, 29x, 2Ax, 2Bx, 2Fx, 2Gx, 2Jx, 2Mx, 2Rx, 2Sx, 2Xx, 04W0409 32x, 33x, 35x, GKx, GLx, GMx... Q6x, Q9x, QAx, QCx, QDx, QHx, QJx, QKx, QLx • 4237-CTO • 4238-CTO CRU ID N N 152 ThinkPad T420 and T420i Hardware Maintenance Manual Table 9.
Hardware Maintenance Manual
Page 160
..., Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QHx, QKx, QLx • 4237-CTO • 4238-CTO 28 Bluetooth daughter card (BDC-3.0) 60Y3271 • 4177-CTO, 23x, 24x, 25x, 26x, 27x, 29x, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 60Y3275 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux... Keyboard (see "Information about ac power adapters" on page 160.) 30 TrackPoint caps 91P9642 - ac power adapter (see "Keyboard" on page 164.) CRU ID N * N 154 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No.
..., Q7x, Q8x, Q9x, QAx, QBx, QCx, QDx, QEx, QFx, QHx, QKx, QLx • 4237-CTO • 4238-CTO 28 Bluetooth daughter card (BDC-3.0) 60Y3271 • 4177-CTO, 23x, 24x, 25x, 26x, 27x, 29x, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 60Y3275 2Kx, 2Lx, 2Mx, 2Nx, 2Px, 2Qx, 2Rx, 2Sx, 2Tx, 2Ux... Keyboard (see "Information about ac power adapters" on page 160.) 30 TrackPoint caps 91P9642 - ac power adapter (see "Keyboard" on page 164.) CRU ID N * N 154 ThinkPad T420 and T420i Hardware Maintenance Manual Parts list-Overall (continued) No.
Hardware Maintenance Manual
Page 163
... 157 Table 10. FRU FRU no. 2 Camera module (No camera and no integrated microphone) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237... • 4238-CTO 04W1614 3 LCD module, 14.0-inch HD (1366 x 768) LED backlight Anti-Glare Display 93P5691 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx...4237-CTO • 4238-CTO 3 LCD module, 14.0-inch HD+ (1600 x 900) LED backlight Anti-Glare Display 93P5693 • 4177-CTO, 22x, 2Kx, 2Lx, 2Nx, 2Px, 2Qx, 2Yx, 35x, 37x, 38x, Q4x, Q8x, QBx, QHx, 93P5689 QKx...
... 157 Table 10. FRU FRU no. 2 Camera module (No camera and no integrated microphone) • 4177-CTO • 4178-CTO • 4179-CTO • 4180-CTO • 4236-CTO • 4237... • 4238-CTO 04W1614 3 LCD module, 14.0-inch HD (1366 x 768) LED backlight Anti-Glare Display 93P5691 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx...4237-CTO • 4238-CTO 3 LCD module, 14.0-inch HD+ (1600 x 900) LED backlight Anti-Glare Display 93P5693 • 4177-CTO, 22x, 2Kx, 2Lx, 2Nx, 2Px, 2Qx, 2Yx, 35x, 37x, 38x, Q4x, Q8x, QBx, QHx, 93P5689 QKx...
Hardware Maintenance Manual
Page 164
... 6 LCD rear cover assembly 04W1608 7 LED cable with camera bracket 04W1619 8 LCD cable (for 14.0-inch HD LCD module) 04W1617 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx... Q8x, Q9x, QAx, QCx, QFx • 4237-CTO • 4238-CTO 8 LCD cable (for 14.0-inch HD+ LCD module) 04W1618 • 4177-CTO, 22x, 2Kx, 2Lx, 2Nx, 2Px, 2Qx, 2Yx, 35x, 37x, 38x, Q4x, Q8x, QBx, QHx, QKx, QVx, R4x, R8x, ... MJx, MKx, MMx, MPx, MQx, MRx, MSx, MYx, MZx, N2x, N5x, N7x, N8x, CRU ID N N N N N 158 ThinkPad T420 and T420i Hardware Maintenance Manual
... 6 LCD rear cover assembly 04W1608 7 LED cable with camera bracket 04W1619 8 LCD cable (for 14.0-inch HD LCD module) 04W1617 • 4177-CTO, 22x, 23x, 24x, 25x, 26x, 27x, 28x, 29x, 2Ax, 2Bx, 2Cx, 2Dx, 2Ex, 2Fx, 2Gx, 2Hx, 2Jx... Q8x, Q9x, QAx, QCx, QFx • 4237-CTO • 4238-CTO 8 LCD cable (for 14.0-inch HD+ LCD module) 04W1618 • 4177-CTO, 22x, 2Kx, 2Lx, 2Nx, 2Px, 2Qx, 2Yx, 35x, 37x, 38x, Q4x, Q8x, QBx, QHx, QKx, QVx, R4x, R8x, ... MJx, MKx, MMx, MPx, MQx, MRx, MSx, MYx, MZx, N2x, N5x, N7x, N8x, CRU ID N N N N N 158 ThinkPad T420 and T420i Hardware Maintenance Manual