K19 SMT Issue List презентация

Содержание

Слайд 1K19 SMT Issue List need Apple schematic, please contact to QQ:119827581


Слайд 2Agenda
Introduction
Power Rail Measure
Thermal Sensor Location
SMT common Issue FA
Conclusion

Слайд 3Introduction
CPU : 2.66/3M/1066MHz．2.80/3M/1066MHz．3.06/3M/1066MHz
MEMORY : 2GB / 4GB / 8Gb 1067 MHz

DDR3
H.D.D : SATA 160 / 250 / 320 / 500 GB
GPU : NVIDIA G9600
V-RAM : HYNIX / SAMSUNG 256 / 512 MB
LCD : LG / SAMSUNG 15 Inch

Слайд 4Power Rail Measure(1/2)
TOP side

Слайд 5Power Rail Measure(2/2)
Bottom side

Слайд 6Thermal Sensor Location(1/4)

Слайд 7Thermal Sensor Location(2/4)

Слайд 8Thermal Sensor Location(3/4)

Слайд 9Thermal Sensor Location(4/4)

Слайд 10EG Video Controller 203 Fail FA
1.Verify GPU on socket
2.Run iTEST Video

Controller 203 to verify VRam

Слайд 11SMT common Issue FA
K19 Proto/DVT/ENG/TQB Build Common Issue List
．No

boot without du, du, du sound
．No boot with du, du, du sound
．Trackpad function NG
．LCD Display too dark
．Can not boot to finder

Слайд 12SMT common Issue FA
K19 Proto/DVT/ENG/TQB Build Common Issue List
．Can

not mount the SD card
．No display but can boot to finder
．Can not found Ethernet
．White Screen(Sometimes)
．IG DAVDP Low Resolution Link Status Test fail


Слайд 13SMT common Issue FA
No boot without du, du, du sound(1/4)

1. Check PBUS and PP3V42_G3H, if no PBUS signal,
you can check U7000, if no
PP3V42_G3H signal , you
can check U6990

Слайд 14SMT common Issue FA
No boot without du, du, du sound(2/4)

2. If step 1 is okay then check S5 power rails(PP3V3_S5,
PP1V2R1V05_S5), if no PP3V3_S5, you can check U7201,
if no PP1V2R1V05_S5 signal, you can check U7750


Слайд 15SMT common Issue FA
No boot without du, du, du sound(3/4)

3. If step 2 is okay then check PM_SLP_S3_L and
PM_SLP_S4_L signals, they should be high level after
power on

Слайд 16SMT common Issue FA
No boot without du, du, du sound(4/4)

4. If step 3 is okay, suspect MCP ‘s problem and suggest
remove MCP to verify on the socket board

Слайд 17SMT common Issue FA
Can not boot with du, du, du sound(1/1)

1. Check there is a gap between J3100 and J3200 or no
2. Check which SO-DIMM
is NG or both
3. Measure impedance for
NG SO-DIMM

Слайд 18SMT common Issue FA
Trackpad function NG(1/3)
1. Check Trackpad

power control circuit as below

Слайд 19SMT common Issue FA
Trackpad function NG(2/3)
1. Check Trackpad

controller circuit as below

Слайд 20SMT common Issue FA
Trackpad function NG(3/3)
We found a

L5801 solder issue in DVT build

Слайд 21SMT common Issue FA
LCD Display too dark(1/3)
1.

Check F9800 and Check J9000 connector is okay or
no
2. If okay, then measure J9000.31~J9000.36 and make
sure they are high, meantime also measure J9000.38
~J9000.40 have exceeded 34 voltage

Слайд 22SMT common Issue FA
LCD Display too dark (2/3)

3. If step 2 is okay, then change L9701 due to high ESR of
L9701 will cause backlight to dark
4. If step 3 is okay, then check LCD_BKLT_EN and
LCD_BKLT_PWM signals from U9600 or no
5. If step 4 is okay, check F9800 is fine or no

Слайд 23SMT common Issue FA
LCD backlight driver(3/3)

Слайд 24SMT common Issue FA
Can not boot to finder(1/1)
1.

Press command + V to see the booting status and
focus on where fail
point is

Слайд 25SMT common Issue FA
No display but can boot to finder(1/3)

1. Check LCD backlight button is ON or OFF
2. If step 1 is okay, then measure PP3V3_SW_LCD and
PPVOUT_S0_LCDBKLT signals (both of them are high
level in normal state)

Слайд 26SMT common Issue FA
No display but can boot to finder(2/3)

3. If step 2 is okay, measure LVDS_DDC_SEL_IG or LVDS_DDC_SEL_EG
LVDS_DDC_SEL_EG(either LVDS_DDC_SEL_IG or
LVDS_DDC_SEL_EG is high level)

Слайд 27SMT common Issue FA
No display but can boot to finder(3/3)

4. If above signal is abnormal, It could be GMUX or DDC
MUX problem, we can do swapped testing or verified
test on socket board

Слайд 28SMT common Issue FA
Can not found Ethernet(1/1)
- Check

U3700 has solder issue
or not
- We found U3700 Pin7,8,9,10,11,
12 have tilt phenomenon in K19
TQB build.

Слайд 29SMT common Issue FA
Can not mount the SD card(1/1)

1. check system profile can catch
USB interface SD module or no
2. If yes, check J3500.14 (SD_CD_L)
-It should be high when insert SD
-It should be low without insert SD card
3. If no, check U3500

Слайд 30SMT common Issue FA
White Screen(Sometimes)(1/1)
- Check R7781(1V05s5_fb) is

stuffed or not

Слайд 31SMT common Issue FA
IG DAVDP Low Resolution Link Status Test fail

(1/1)
1. Retest
2. Re-set the DAV box
3. Change a new DP dongle

Слайд 32contact
需要苹果APPLE图纸，请加QQ:119827581 提供市面上销售的所有苹果机器的图纸，品种齐全。
如有苹果主板修复技术问题，可加上述QQ交流。
需要苹果全套图纸的，可直接电话联系：15821085435（归属地：上海）

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