一、不开机类流程图

1、打印信息内容：

UART_115200
BIST0-FAIL
BIST1-OK
[012345678][]-44
[012345678][01234567]-43_nPD
可能原因：DDR 0

2、打印信息内容：

s8SN0(6) s8SN1(7)!!!!!!!
should go to standby!!!!!
Wait for PM51 standby...........
PM51 run ok...........
MailBox: MDrv_PM_SetDbgLevel...!
Get PM command: 0x30.MDrv_PM_Init OK
MailBox: MDrv_PM_Init...(0x01)
power down

可能原因：待机状态

3、打印信息内容：

UART_115200
BIST0-FAIL
BIST1-FAIL
[][]-44
[][]-44
可能原因：主芯片

4、打印信息内容：

鳸ART_115200
BIST0-OK
BIST1-OK
[][]-44[12345678][012345678]-44
可能原因：主芯片

5、打印信息内容：

U-Boot (Aug 27 2010 - 18:22:39)
Board: MSTAR TITANIA (CPU Speed 504 MHz)
DRAM:  134217728
Skipping flash_init
Flash:  0 kB
NAND:   unknown FLASH
可能原因：NANA flash故障、检查flash与主芯片通信，确认正常后代换NANA flash，如果不能排除，更换主芯片。

6、打印信息内容：

Board: MSTAR TITANIA (CPU Speed 504 MHz)
DRAM:  134217728
Skipping flash_init
Flash:  0 kB
NAND:  nand_bbt: searching bbt....Bad block table found at page 65472, version 0x01nand_bbt: searching bbt.....Bad block table found at page 65408, version 0x01nand_read_bbt: Bad block at 0x06880000
128 MiB
In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
MSVC00B000100100208811DA0000000 
Set MIU0 group priority:c9.....
Set MIU1 group priority:c9..... （打印到此处后，无任何信息）
可能原因：重新升级软件

7、打印信息内容：

UBIFS error (pid 1): ubifs_read_node: cannot read node 9 from LEB 40:103072, error -22
UBIFS error (pid 1): ubifs_iget: failed to read inode 1, error -22
List of all partitions:fe00            4096 msram0 (driver?)
00             128 mtdblock0 (driver?)
01            1024 mtdblock1 (driver?)
02            1024 mtdblock2 (driver?)
03          114816 mtdblock3 (driver?)
04           14080 mtdblock4 (driver?)
No filesystem could mount root, tried:  ubifs
Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)
（打印到此处后，无任何信息）

可能原因：重新升级软件

8、打印信息内容：

第一部分

fuse init (API version 7.10)
msgmni has been set to 36
CPU 0 Unable to handle kernel paging request at virtual address 00000000, epc == 80626210, ra == 8062644cOops[#1]:
Cpu 0
$ 0   : 00000000 0000002d 00000000 00000000
$ 4   : 00000001 00000001 00000003 00000001
$ 8   : 00000000 e00676bc 00000003 00000006
$12   : 8213bba8 00000000 00000000 00000014
$16   : e0066000 00000046 e0066000 00000002
$20   : 00000001 00000005 00000003 00000002
$24   : 80852c90 0000001a                  
$28   : 8213a000 8213bbd0 00000002 8062644c
Hi    : 0000000b
Lo    : 5555555b
epc   : 80626210 zlib_tr_stored_block+0xcc/0x1e4    Not tainted
ra    : 8062644c zlib_tr_flush_block+0x124/0x6f4
第二部分

Status: 11008c03    KERNEL EXL IE
Cause : 0080000c
BadVA : 00000000PrId  : 00019554 (MIPS 34Kc)Modules linked in:
Process cryptomgr_test (pid: 174, threadinfo=8213a000, task=82019f48, tls=00000000)
Stack : e00676bc e0066000 00000002 00000001 00000005 00000046 e00676bc 8062644c        5a5aa5a5 e0066000 00000036 00000043 e0066000 00000000 00000043 00000002        00000001 80623900 5a5aa5a5 5a5aa5a5 80950000 82019f48 820f6a80 e0066000        00000005 80905e94 00000046 8213bcc4 8213bcc0 8062344c 8096fec0 80970000        820f6b00 80446434 8213bc58 00000000 820f6a80 820f6a00 80905e94 80600970        ...
Call Trace:
[<80626210>] zlib_tr_stored_block+0xcc/0x1e4
[<8062644c>] zlib_tr_flush_block+0x124/0x6f4
[<80623900>] deflate_slow+0x1dc/0x498
第三部分

<8062344c>] zlib_deflate+0x128/0x400
[<80600970>] deflate_compress+0x94/0xac
[<805facf8>] test_comp+0x90/0x300
[<805fafc4>] alg_test_comp+0x5c/0xa4
[<805fb3b0>] alg_test+0x178/0x364
[<805fabdc>] cryptomgr_test+0x3c/0x5c
[<804417b0>] kthread+0x58/0xa4
[<8040aa94>] kernel_thread_helper+0x10/0x18Code: 960416b4  24650001  00431021 <a0440000> ae050014  8e070014  8e030008  322600ff  24020008 （打印到此处后，无任何信息） 
可能原因：主芯片故障，更换

9、打印信息内容：

heck_keypad is[0]--keypad_pressed is [0] ---check_version is[0]
Set MIU0 group priority:c9.....
Set MIU1 group priority:c9.....
Set MIU0 group priority:c9.....
Set MIU1 group priority:c9.....
Change MIU0 select.....
Group0:d80   Group1:88    Group2:200   Group3:f1    Change MIU1 select.....
Group0:4200  Group1:e00   Group2:30    Group3:4000  
Hit any key to stop autoboot:  0 0x00020000-0x0f420000 : "mtd=1"
UBI error: ubi_read_volume_table: the layout volume was not found
UBI error: ubi_init: cannot attach mtd0UBI error: ubi_init: UBI error: cannot initialize 
UBI, error -22UBI init error -22Error, no UBI device/partition selected!
## Booting image at 81000000 ...
Bad Magic Number<< MStar >># （打印到此后，无任何信息）
可能原因：系统程序不完整，重新升级软件

10、打印信息内容：

insmod: can't read '/vendor/t3/modules/wireless/8712u.ko': No such file or directory
insmod: can't read '/vendor/t3/modules/wireless/8192cu.ko': No such file or directory
/etc/init.d/rcS: line 93: t3_load_wireless_dongle_modules_b43.sh: not found
/etc/init.d/rcS: line 96: t3_load_sound_modules.sh: not found
/upgrade/upgrade_daemon: error while loading shared libraries: libmadp.so: cannot open shared object file: 
No such file or directory
/upgrade/test_scan_ip: error while loading shared libraries: libmadp.so: cannot open shared object file: No such file or directorystarting pid 397, tty '': '/bin/echo /bin/Xjys > 
/proc/sys/kernel/hotplug'Please press Enter to activate this console. & （打印到此后，无任何信息）
可能原因：系统程序不完整，重新升级软件

11、MST6M48方案机芯打印信息内容：

s8SN0(FFFF) s8SN1(FFFF)
should go to standby!!!!!
msAPI_Power_PowerDown_EXEC()
Wait for PM51 standby...........
PM51 run ok...........
MailBox: MDrv_PM_SetDbgLevel...!
power down
可能原因：待机状态

12、无图故障打印信息内容：

[SYS][000166]     MDrv_SYS_SetPanelInfo 
MDrv_Ursa_CpuWait Error!!!（明显是20通信出问题了） 
MDrv_Ursa_IICUseBus!!!
!!NYI[porting/OBA2/p_drvpower.c]MDrv_Power_SetModeIRQThread_34set env language---------22--MDrv_PWM_DutyCycle(2, 0x000007D0)
MDrv_Ursa_CpuWait Error!!! 
MDrv_Ursa_CpuWait Error!!!
MDrv_Ursa_CpuWait Error!!!!!!
UrsaBus WriteBytesError 
MDrv_Ursa_IICUseBus!!!read write fail---a0
可能原因：MST6M20芯片I2C总线问题，查看其周围容阻，代换芯片。