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820-00923-a 20v 0 amp
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Which big coils get voltage (apart of 3V3_S5)?
L6900?
Nothing on L7660?
What about U7800's LDOs?
Ceck diode mode to ground on all big coils, which don't get voltage.
What about U7800's LDOs?
Ceck diode mode to ground on all big coils, which don't get voltage.
The L7660 coil is connected to the PP3V3_S5 voltage, so I didn't mention the 3V3_S5 voltage as you requested
L7660 : 3V
VİNLDO3 : 13V
LDO5V : 5V
LDO3V : 3,4V
VINLDO1_0 : no voltage
PP3V3_PMICLDO : 3,4v
Diyot modu:
L9400 : 0,351
LB700 : 0,180
L7960 :0,059
L7900: 0,173
L8050 :0.162
L8000 :0.213
L7270 : 0,016
L7220: 0,021
L7210: 0,018
L7410: 0,017
L7420: 0,013
L7430: 0,015
L7700: 0,203
L8410: 0,917
L3500:0,194
L7660 : 3V
VİNLDO3 : 13V
LDO5V : 5V
LDO3V : 3,4V
VINLDO1_0 : no voltage
PP3V3_PMICLDO : 3,4v
Diyot modu:
L9400 : 0,351
LB700 : 0,180
L7960 :0,059
L7900: 0,173
L8050 :0.162
L8000 :0.213
L7270 : 0,016
L7220: 0,021
L7210: 0,018
L7410: 0,017
L7420: 0,013
L7430: 0,015
L7700: 0,203
L8410: 0,917
L3500:0,194
Last edited:
Trigger SMC_ONOFF_L and check for drop pulse at PM_PWRBTN_L (at same time).
Steady 3V for sure?
Do you get 3V3_SUS?
Do you get 3V3_SUS?
Check for pulse at all PM_SLP_S5/4/3_L now.
Not pulsing at all (when triggering SMC_ONOFF_L)?
Then check basic PCH's signals: PM_DSW_PWRGD, PM_BATLOW_L, PCH_SRTC_RESET_L, RTC_RESET_L, PM_RSMRST_L.
"PM_DSW_PWRGD 1 volt fixed
..........
PM_RSMRST_L : No Voltage"
Bad enough...
Check S5_PWRGD level.
Also check R7802/10 integrity.
..........
PM_RSMRST_L : No Voltage"
Bad enough...
Check S5_PWRGD level.
Also check R7802/10 integrity.
Then bad U7800...