Philips-BDP-2982-Service-Manual(1) 电路图 维修手册.pdf

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1、BDP2980/12/98/05 BDP2982/12 Copyright 2012 Philips Consumer Electronics B.V. Eindhoven, The Netherlands All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted, in any form or by any means, electronic, mechanical, photocopying, or otherwise wit

2、hout the prior permission of Philips. Blu-ray Disc Player Version 1.0Version 0.0 Published BG AVM Printed in The Netherlands Subject to modification 3141 785 37980 TABLE OF CONTENTS Chapter Technical Specification, PCBs Location. 1 Safety Instruction 2 Instruction for Use 3 Mechanical and Dismantlin

3、g Instructions. 4 Service Modes, Troubleshooting. 5 Overall Block Diagram, Wiring Diagram. 6 Electrical Diagram 7 Exploded View Diagram 5) The software will updagrde and screen will display as below: Upgrade is ongoing, Please wait Please do not unplug or switch off the device. 6) Restart the set. B

4、) Update software via USB Flash Drive: 1) Go to to check if the latest software version is available for this player. 2) Download the software onto a USB flash drives root DIR named UPG_ALL. 3) Insert the power plug and HDMI cable, power on and then insert the USB flash drive to the USB jack. 4) In

5、the Home menu, select -. 5) Then press OK 6) youll see now searching for new software, please wait. 7) Waiting, the youll see software for this player has been found . 8) Then select Start and press OK 9) then youll see upgrade is ongoing ., wait until it ends. 10) Player will restart automatically

6、or press Restart now to restart, after restarting the upgrade ends. subinfo:xxxx system SW:xxxx ethernet MAC:xxxxxxxx 1-3 Remark: pls. make sure the software can be match with the loader 2.0 Safety instruction 1. General safety Safety regulations require that during a repair: . Connect the unit to t

7、he mains via an isolation transformer. . Replace safety components indicated by the symbol Only by components identical to the original ones. Any Other component substitution (other than original type) May increase risk of fire or electrical shock hazard. Safety regulations require that after a repa

8、ir, you must Return the unit in its original condition. Pay, in particular, Attention to the following points: . Route the wires/cables correctly, and fix them with the mounted cable clamps . Check the insulation of the mains lead for external Damage . Check the electrical DC resistance between the

9、mains Plug and the secondary side: 1) Unplug the mains cord, and connect a wire between The two pins of the mains plug. 2) Set the mains switch the “on” position (keep the Mains cord unplug). 3) Measure the resistance value between the mains plug and the front panel, controls, and chassis bottom. 4)

10、 Repair or correct unit when the resistance measurement is less than 1M 5) Verify this, before you return the unit to the customer/user (ref. UL-standard no. 1492). 6) Switch the unit “off”, and remove the wire between the two pins of the mains plug. 2. Laser safety This unit employs a laser. Only q

11、ualified service personnel May remove the cover, or attempt to service this device (due to possible eye injury). Laser device unit Type :Semiconductor laser GaAIAs Wavelength :650nm (DVD) :780nm (VCD/CD) Output power :7mW(DVD) :10mW(DVD/CD) Beam divergence:60 degree Note: Use of controls or adjustme

12、nts or performance of procedure other than those specified herein, may result in hazardous radiation exposure. Avoid direct exposure to beam. 2- 1 3.0 Instruction for Use You can download this information from the following websites: 3-1 4.0 MECHANICAL AND DISMANTLING INSTRUCTIONS The following guid

13、elines show how to dismantle the player. Step1: Remove 3 screws around the Top Cover, and then remove the Top Cover 4- 1 Step3: Remove the 9 screws on board to dismantle the DVD BOARD remove the door from the tray; No display , and buttons do not work No No No Yes Yes No display on LED DISPLAY, and

14、buttons do not work Check every supply voltage on main board is normal Refer to Power supply board part Correct connection Replace PU4 or LED DISPLAY Yes Go Yes No Check +5V,+12V, voltage on the power board DATA,CLK,STB,on the power board 1.Check whether bad solder exists on PU4 and pins of LED DISP

15、LAY 2.Check whether the circuit connected to PK1, PK2 is broken. Fix the power board Trouble shooting chart 5-1 Check the signals of the PU4s Check the PU4 power supply (PU4.7= +5V and PU4.21= +5V) Remote control does not work Go Yes Yes Remote control does not work NO Replace the battery for remote

16、 controller Check whether the remote controllers battery is exhausted or not. Check the Power supply board part Replace IR1 NO Trouble shooting chart 5-2 Check the IR1 power supply is OK Check whether bad solder exits on IR1pins Yes Fix the connection NO Yes Cant read disc or cant open the disk door

17、 Yes Check the connection of the 16PIN cable from PJ1 on the Power Board. Cant read disc or cant open the disk door Check 40pin and 8pin cable from main board connection to the loader is normal Check the U409 and the peripheral components near them on the main board NO GO Check whether the DVD loade

18、r running is normal Fix the connection NO Yes Trouble shooting chart 5-3 3 COAXIAL 128M MOTOR DRIVER HDMI NAND FLASH DDR3 SDRAM 384M MT8560 64Mx16DDR3 TPIC2050G4 SANYO TRV415H09 +5v +12v KEY_OPEN VDATA VCLK VSTB IR KEY_POWER USB_VCC USB_DP USB_DM USB_GND GND BL1117-ADJ3.3VSTBY FP90123.3V G5725ADJT11

19、U1.5V 1.2VAT1526P11U +5V(FROM PSU) DLAN IR SENSOR POWER DRIVER TNY178PN LED DISPLAY 100V-230V +12V_OUT POWER PCB put FB6 nearby Motor Driver VCC_1 SWITCH G DS 3.3V OPTION2# CIRCUIT DC_EN DC_EN VCC_32014805 DC_EN OPWRSB DC_EN RESET_ VCC_1 POWER_EN OPWRSB OPWRSB# POWER_EN OPWRSB# 3.3V VCC 3.3V_STBY VC

20、C VCC 1.5V P2_GND P2_GND VCC 1.2V VCC 3.3V_STBY VCC_1 MVCC_T VCC MM 3.3V_STBY 3.3V_STBY 3.3V_STBY 3.3V M VCC OPWRSB6 RESET_6 DC_EN4 R101 10K R101 10K R24 10K R24 10K C215 0.1uF/10V C215 0.1uF/10V Q5 SST3904/NC Q5 SST3904/NC 1 32 C145 10uF/6.3V C0805/SMD C145 10uF/6.3V C0805/SMD R1390 10K/NC R1390 10

21、K/NC C10NCC10NC Q82307/NC SOT23/SMD Q82307/NC SOT23/SMD 1 23 R103 2.74K_1% R103 2.74K_1% C11 10uF/10V/X5R C11 10uF/10V/X5R R99100R99100 R5110K/NCR5110K/NC C843 1uF/25V/NC C843 1uF/25V/NC C2 10uF/10V/X5R C2 10uF/10V/X5R C236 10uF/10V/X5R C236 10uF/10V/X5R R23 1K/NC R23 1K/NC U4 G5725ADJT11U U4 G5725A

22、DJT11U EN 1 GND 2 LX 3 VIN 4 FB 5 C25 22uF/6.3V/X5R/NC C25 22uF/6.3V/X5R/NC Q2 (PMOS)SI2307/NC Q2 (PMOS)SI2307/NC U5 AT1526P11U U5 AT1526P11U VCC 1 REF 2 GND 3 FB 4 EN 5 PGND 6 LX 7 VIN 8 R32 10K/NC R32 10K/NC R181 10K_1% R181 10K_1% Q4 SST3904/NC Q4 SST3904/NC1 32 C845 2.2uF/NC C845 2.2uF/NC R8550R

23、R8550R Q13 2N3904 Q13 2N3904 1 32 U17 LM1117S-3.3V U17 LM1117S-3.3V ADJ 1 IN 3 OUT 2 OUT1 4 R180 30K_1% R180 30K_1% R3 10/0603 R3 10/0603 C30 0.1uF/10V/NC C30 0.1uF/10V/NC FB6 BLM18P ASD/L_0805 FB6 BLM18P ASD/L_0805 R5 15K/1% R5 15K/1% R1401K/NCR1401K/NC C7 0.1uF C7 0.1uF Q12 2N3904 Q12 2N3904 1 32

24、C4 0.1uF C4 0.1uF R853NCR853NC R179 10K R179 10K C5 0.1uF C5 0.1uF +CE11 100uF/6.3v/NC +CE11 100uF/6.3v/NC C214 0.1uF/10V C214 0.1uF/10V C144 0.1uF/6.3V C144 0.1uF/6.3V R13880R/0805R13880R/0805 +CE3 220uF/6.3V +CE3 220uF/6.3V 12 CE9 0.1uF CE9 0.1uF R102 15K_1% R102 15K_1% R98 3.3K R98 3.3K +CE10 220

25、uF/6.3V +CE10 220uF/6.3V 12 R6 0R/NC R6 0R/NC C8 0.1uF C8 0.1uF C168 0.1uF/6.3V C168 0.1uF/6.3V CE4 10uF/10V/X5R CE4 10uF/10V/X5R R1 10K/1% R1 10K/1% C235 10uF/10V/X5R C235 10uF/10V/X5R C1 10uF/10V/X5R C1 10uF/10V/X5R L1 2.2uH/1.5A L1 2.2uH/1.5A C3 10uF/10V/X5RC3 10uF/10V/X5R C288NCC288NC R1387 47K/

26、NC R1387 47K/NC U18 uP7706U8 U18 uP7706U8 POK 1 EN 2 VIN 3 CNTL 4 NC 5 VOUT 6 FB 7 GND 8 GND 9 R26 1K R26 1K NC23 NC PAD 0603 NC23 NC PAD 0603 R491K/NCR491K/NC C26 22uF/6.3V/X5R/NC C26 22uF/6.3V/X5R/NC Q31 SST3904/NC Q31 SST3904/NC1 32 C842 10uF/10V C842 10uF/10V R4 7.5K/1% R4 7.5K/1% L7 2.2uH/2.5A

27、L7 2.2uH/2.5A R52 10K/NC R52 10K/NC R215K/1%R215K/1% R182 1.25K_1% R182 1.25K_1% C93 1uF/NC C93 1uF/NC C34 10uF/610V/X5R ASD/C_0805 C34 10uF/610V/X5R ASD/C_0805 Q6 SST3904 Q6 SST39041 32 C202 4.7uF/10V C202 4.7uF/10V MAIN BOARD FOR POWER 7-1 DDR3#1 NEAR DRAM RCAS_ RBA0 RWE_ RDQM0 RCS_ RA0 RODT E1_ZQ

28、 RDQS0_ RCLK0 RA12 RDQS1 RA13 RCKE RA3 RDQM1 RRESET RA9 RA5 RA1 RBA2 RA10 RBA1 RA7 RDQS1_ RA6 RA11 RA8 RA2 RDQS0 RCLK0_ RRAS_ RA4 RDQ14 RDQ12 AVSS33_MEMPLL AVDD33_MEMPLL RDQ6 RDQ8 RDQ10 RDQ11 RDQ3 RDQ13 RDQ12 RDQ15 RDQ14 RDQ7 RDQ5 RDQ1 RDQ4 RDQ9 RDQ0 RDQ2 RDQM1 RDQS0 RDQM0 RDQS1_ RDQS0_ RDQS1 RCAS_

29、RA7 RA12 RA3 RCKE RBA2 RWE_ RA4 RA9 RA13 RBA1 RA2 RA11 RCS_ RA6 RA8 RA5 RRAS_ RODT RRESET RA0 RA10 RA1 RBA0 RCLK0 RCLK0_ DDR_VREF RDQ0 RDQ1 RDQ2 RDQ3 RDQ4 RDQ5 RDQ7 RDQ6 RDQ13 RDQ15 AVDD33_MEMPLL DDR_VREF RCLK0_ RCLK0 RDQ8 RDQ11 RDQ9 RDQ10 RA2 RA13 RRESET RCS_ RDQS1_ RDQS1 RDQ12 RDQ7 RBA0 RDQS0_ RDQ

30、S0 RRAS_ RDQ2 RODT RDQ10 1.5V DDR_VREF 1.5V 3.3V 1.5V DDR_VREF DDR_VREF DDR_VREF 1.5V 1.5V 1.5V TP3TP3 NC2NC2 TP4TP4 TP10TP10 C52 0.1uF/16V/X7R C52 0.1uF/16V/X7R C50 0.1uF/16V/X7R C50 0.1uF/16V/X7R C45 0.1uF/16V/X7R C45 0.1uF/16V/X7R C49 0.1uF/16V/X7R/NC C49 0.1uF/16V/X7R/NC TP1TP1 C44 0.1uF/16V/X7R

31、 C44 0.1uF/16V/X7R TP15TP15 C56 22uF/6.3V/X5R/NC C56 22uF/6.3V/X5R/NC TP8TP8 C41 0.1uF/16V/X7R C41 0.1uF/16V/X7R C46 0.1uF/16V/X7R C46 0.1uF/16V/X7R NC1NC1 TP5TP5 C43 NC C43 NC C40 4.7uF/10V/X5R C40 4.7uF/10V/X5R C55 22uF/6.3V/X5R C55 22uF/6.3V/X5R R36 100_1% R36 100_1% TP11TP11 C73 4.7uF/10V/X5R C7

32、3 4.7uF/10V/X5R C42 0.1uF/16V/X7R C42 0.1uF/16V/X7R C47 0.1uF/16V/X7R C47 0.1uF/16V/X7R C58 0.1uF/16V/X7R C58 0.1uF/16V/X7R R35 100_1% R35 100_1% C39 0.1uF/16V/X7R C39 0.1uF/16V/X7R TP7TP7 U1A MT8560-PBGA U1A MT8560-PBGA DDRVCCIO T18 DDRVCCIO J20 DDRVCCIO K19 DDRVCCIO L19 DDRVCCIO L20 DDRVCCIO N19 A

33、VDD33_MEMPLL AA21 AVSS33_MEMPLL AB19 DGND12_K L10 DGND12_K N4 DGND12_K R4 DGND12_K AB13 DGND12_K Y17 DGND12_K Y19 DGND12_K J22 DGND12_K L5 DGND12_K L6 DGND12_K L11 DGND12_K L12 DGND12_K L13 DGND12_K L14 DGND12_K L15 DGND12_K L16 DGND12_K L21 DGND12_K M10 DGND12_K M12 DGND12_K N10 DGND12_K M14 DGND12

34、_K P10 DGND12_K M16 DGND12_K U6 DGND12_K N11 DGND12_K R10 DGND12_K N13 DGND12_K N15 DGND12_K N16 DGND12_K N22 DGND12_K N23 DGND12_K P12 DGND12_K P14 DGND12_K P16 DGND12_K K21 DGND12_K R11 RDQ0 V24 RDQ1 V23 RDQ2 U25 RDQ3 U23 RDQ4 K22 RDQ5 J23 RDQ6 K23 RDQ7 J24 RDQ8 T23 RDQ9 T22 RDQ10 R24 RDQ11 T24 RD

35、Q12 M24 RDQ13 L23 RDQ14 L22 RDQ15 M23 RDQM0 R23 RDQM1 R22 RDQS0 P24 RDQS0_ P25 RDQS1 N25 RDQS1_ N24 RODT W24 RCAS_ AC22 RRAS_ W25 RCS_ Y23 RWE_ AE25 RCKE AE23 RRESET AC25 RBA0 Y24 RBA1 AE24 RBA2 AD24 RA0 AA25 RA1 U21 RA2 AB25 RA3 AA23 RA4 W21 RA5 AA24 RA6 W22 RA7 AB24 RA8 W20 RA9 AC24 RA10 AD23 RA11

36、 V22 RA12 AA20 RA13 AD25 RCLK0_ H25 RCLK0 H24 RVREF0 T19 DDRVCCIO N20 DDRVCCIO P19 DDRVCCIO V18 DDRVCCIO R20 TP_MEMPLL AB23 TN_MEMPLL AA22 DGND12_K R12 DGND12_K R13 DGND12_K R14 DGND12_K R15 DGND12_K L7 DGND12_K T21 DGND12_K Y15 DGND12_K Y13 DGND12_K H21 DGND12_K AC18 DGND12_K AA19 DGND12_K H14 DDRV

37、CCIO W15 DDRVCCIO W18 DDRVCCIO V14 DDRVCCIO V16 DDRVCCIO V17 DDRVCCIO Y14 DDRVCCIO W16 DGND12_K U22 DGND12_K V5 TP14TP14 C37 0.1uF/16V/X7R C37 0.1uF/16V/X7R TP13TP13 TP6TP6 TP2TP2 TP9TP9 R37 100_1% R37 100_1% C57 0.1uF/16V/X7R/NC C57 0.1uF/16V/X7R/NC R34 240/1% R34 240/1% TP12TP12 U2 DDR3-64Mx16 U2

38、DDR3-64Mx16 VDD_0 B2 NC_0 J1 VSS_0 A9 VSSQ_0 B1 UDQS# B7 VDDQ_0 A1 DQ14 B8 VSSQ_1 B9 UDM D3 UDQS C7 VSSQ_2 D1 DQ15 A3 VDDQ_1 A8 DQ9 C3 VDDQ_2 C1 VDDQ_3 C9 DQ8 D7 VDDQ_4 D2 DQ12 A7 VSSQ_3 D8 DQ11 C2 DQ10 C8 VSSQ_4 E2 DQ13 A2 VDD_1 D9 NC_1 J9 VSS_1 B3 VSSQ_5 E8 LDQS# G3 VDDQ_5 E9 DQ6 G2 VSSQ_6 F9 LDM

39、E7 LDQS F3 VSSQ_7 G1 DQ7 H7 VDDQ_6 F1 DQ1 F7 VDDQ_7 H2 DQ0 E3 VDDQ_8 H9 DQ4 H3 VSSQ_8 G9 DQ3 F8 DQ2 F2 BA2 M3 DQ5 H8 VDD_5 N1 VREFDQ H1 VSS_2 E1 VSS_5 J8 CK J7 VDD_2 G7 CKE K9 WE# L3 RAS# J3 CK# K7 ODT K1 RESET# T2 BA0 M2 BA1 N8 CAS# K3 CS# L2 A10/AP L7 A1 P7 A2 P3 A0 N3 VDD_3 K2 VSS_3 G8 A3 N2 A5 P

40、2 A6 R8 A4 P8 A7 R2 A9 R3 A11 R7 A8 T8 VSS_4 J2 VDD_4 K8 A12/BC# N7 NC_3 L9 ZQ L8 NC_2 L1 VREFCA M8 NC_4 M7 NC_5 T3 NC_6 T7 VSS_6 M1 VSS_7 M9 VSS_8 P1 VSS_9 P9 VSS_10 T1 VSS_11 T9 VDD_6 N9 VDD_7 R1 VDD_8 R9 C53 0.1uF/16V/X7R C53 0.1uF/16V/X7R 7-2 MAIN BOARD FOR DDR3 D DDR3#2 NEAR DRAM RDQM0_B RDQ9_B

41、 RODT_B RDQS1_B RDQM1_B RDQ0_B RRESET_B RDQ12_B RBA1_B RDQ13_B RA5_B RDQ6_B RDQ15_B RDQ5_B RA0_B RCS_B RDQ8_B RDQ10_B RDQ7_B RDQ14_B RDQ11_B RDQ3_B RDQ4_B RDQ2_B RDQ1_B RDQS1_B RDQS0_B RDQS0_B RCAS_B RRAS_B RWE_B RCKE_B RBA0_B RBA2_B RA1_B RA2_B RA3_B RA4_B RA6_B RA7_B RA8_B RA9_B RA10_B RA11_B RA12

42、_B RA13_B RCLK0_B RDQS0_B RRAS_B RDQM0_B E2_ZQ RA12_B RRESET_B RDQS0_B RBA1_B RCS_B RDQS1_B RBA2_B RCAS_B RA7_B RDQS1_B RA4_B RA5_B RA10_B RA13_B RA11_B RCKE_B RDQM1_B RA3_B RBA0_B RA1_B RA2_B RODT_B RCLK0_B RWE_B RA6_B RCLK0_B RA8_B RA9_B RA0_B RCLK0_B RDQ2_B RDQ15_B RDQ4_B RDQ1_B RDQ3_B RDQ5_B RDQ

43、7_B RDQ6_B RDQ0_B RDQ13_B RDQ14_B RDQ12_B RCLK0_B RCLK0_B RDQ11_B RDQ10_B RDQ8_B RDQ9_B RDQS1_B RDQS1_B RDQS0_B RDQS0_B RA2_B RRESET_B RCS_B RDQ12_B RDQ3_B RBA0_B RRAS_B RODT_B RDQ4_B 1.2V1.2V DDR_VREF 1.5V 1.2V DDR_VREF DDR_VREF 1.5V 1.5V 3.3V C59 0.1uF/16V/X7R C59 0.1uF/16V/X7R TP25TP25 C68 0.1uF/

44、16V/X7R/NC C68 0.1uF/16V/X7R/NC TP26TP26 C74 0.1uF/50V/X7R/NC C74 0.1uF/50V/X7R/NC C64 0.1uF/16V/X7R C64 0.1uF/16V/X7R C61 0.1uF/16V/X7R C61 0.1uF/16V/X7R C67 0.1uF/16V/X7R C67 0.1uF/16V/X7R U1B MT8560-PBGA U1B MT8560-PBGA DVCC12_K K9 DVCC12_K K11 DVCC12_K L9 DVCC12_K U9 DVCC12_K P9 DVCC12_K T9 DVCC

45、12_K L18 DVCC12_K T11 DVCC12_K K12 RDQ0_B AC12 RDQ1_B AC13 RDQ2_B AD13 RDQ3_B AE13 RDQ4_B AD21 RDQ5_B AC21 RDQ6_B AD20 RDQ7_B AC20 RDQ8_B AC15 RDQ9_B AC16 RDQ10_B AB15 RDQ11_B AB14 RDQ15_B AD18 RDQ13_B AE18 RDQ14_B AE19 RDQ12_B AC19 RDQM0_B AB16 RDQM1_B AA15 RDQS0_B AD16 RDQS0_B AE16 RDQS1_B AD17 RD

46、QS1_B AC17 RODT_B AD10 RCAS_B Y12 RRAS_B AE11 RCS_B AE10 RWE_B AA12 RCKE_B AA6 RRESET_B AE7 RBA0_B AB8 RBA1_B W8 RBA2_B AC11 RA0_B AC10 RA1_B Y10 RA2_B AE8 RA3_B AB10 RA4_B AA10 RA5_B AC8 RA6_B AA8 RA7_B AD8 RA8_B W10 RA9_B AD7 RA10_B AB6 RA11_B W12 RA12_B Y8 RCLK0_B AD22 RCLK0_B AE22 DVCC12_K T17 D

47、VCC12_K N17 DVCC12_K K17 DVCC12_K N18 DVCC12_K K18 DVCC12_K P18 RA13_B AB11 DVCC12_K L17 DVCC12_K R17 DVCC12_K K15 DVCC12_K U11 DVCC12_K T16 DVCC12_K T12 DVCC12_K T14 RVREF0_B Y18 DVCC12_K U12 DVCC12_K U14 DVCC12_K U15 DVCC12_K U16 C71 0.1uF/16V/X7R C71 0.1uF/16V/X7R C75 0.1uF/16V/X7R C75 0.1uF/16V/

48、X7R TP23TP23 C72 0.1uF/16V/X7R/NC C72 0.1uF/16V/X7R/NC R39 100_1% R39 100_1% U3 DDR3-128Mx16 U3 DDR3-128Mx16 VDD_0 B2 NC_0 J1 VSS_0 A9 VSSQ_0 B1 UDQS# B7 VDDQ_0 A1 DQ14 B8 VSSQ_1 B9 UDM D3 UDQS C7 VSSQ_2 D1 DQ15 A3 VDDQ_1 A8 DQ9 C3 VDDQ_2 C1 VDDQ_3 C9 DQ8 D7 VDDQ_4 D2 DQ12 A7 VSSQ_3 D8 DQ11 C2 DQ10

49、C8 VSSQ_4 E2 DQ13 A2 VDD_1 D9 NC_1 J9 VSS_1 B3 VSSQ_5 E8 LDQS# G3 VDDQ_5 E9 DQ6 G2 VSSQ_6 F9 LDM E7 LDQS F3 VSSQ_7 G1 DQ7 H7 VDDQ_6 F1 DQ1 F7 VDDQ_7 H2 DQ0 E3 VDDQ_8 H9 DQ4 H3 VSSQ_8 G9 DQ3 F8 DQ2 F2 BA2 M3 DQ5 H8 VDD_5 N1 VREFDQ H1 VSS_2 E1 VSS_5 J8 CK J7 VDD_2 G7 CKE K9 WE# L3 RAS# J3 CK# K7 ODT K1 RESET# T2 BA0 M2 BA1 N8 CAS# K3 CS# L2