820-01700MacBook Pro (16-inch, 2019)

The logic board of the MacBook Pro (16-inch, 2019), model A2141, 2019, 16-inch. 8 known faults with their symptoms below.

Model number: A2141
Year: 2019
Revisions: Rev A

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Identity and revisions

Brand: Apple
Device: MacBook Pro
Model: A2141
Identifier: MacBookPro16,1
Board: 820-01700
Revisions: A

Power rails, in sequence

Net	Nominal	Role
PPDCIN_G3H	20 V	Charger input at C7024, C7043, C7027 or C7026; diode mode to ground about 0.550
PPBUS_G3H	12.62 V	Main bus at F7000; 12.60 to 12.65 V normal, 12.28 to 12.35 V with the T2 not booted; diode mode about 0.410
PP3V3_G3H_RTC_X	3.3 V	3.3 V from U6960 for the CD3217s at C3100; diode about 0.420; over 1 kΩ to ground
PP3V3_G3H_SOCPMU	3.3 V	3.3 V from U7650 to the T2 and PMU at C7893 or C7869; diode about 0.378
PP0V9_SSD0	0.9 V	NAND rail; diode 0.400 to 0.500
PP2V5_NAND_SSD1	2.5 V	NAND rail from U9580 (L9581); diode 0.400 to 0.500
PP1V8_SSD0	1.8 V	NAND rail; diode 0.380 to 0.450
PP2V5_NAND_SSD0	2.5 V	NAND rail from U9080 (L9081); diode 0.400 to 0.500; over 60 Ω to ground
PP1V8_S5	1.8 V	Intel S5 rail
PP3V3_S5	3.3 V	Intel S5 rail; diode about 0.335

Checked on 2026-10-29 against 2 sources: verified. Revision A is a placeholder until Studio records the real revisions.

Known faults

NAND 2.5 V rail short in the cooling air path (C9586, C9088, C9087, C9588, U9080, U9580)
Seen in 25% of recorded fixes on this board.
Symptoms
20 V, 0.10 to 0.30 A. Power cycling.
Parts involved
C9586, C9088, C9087, C9588, U9080, U9580
The fix, the readings that point to it and the guided tree are in the app. Free account
T2 not talking to the Calpe PMU: PP3V3_S5 and PP1V8_S5 missing, PPBUS_G3H 12.3 V
Seen in 20% of recorded fixes on this board.
Symptoms
20 V, 0.04 to 0.07 A.
The fix, the readings that point to it and the guided tree are in the app. Free account
5 V at 0.00 to 0.05 A: PPBUS_G3H short or creation (ISL9240, CD3217)
Seen in 15% of recorded fixes on this board.
Symptoms
5 V, 0.00 to 0.05 A.
Parts involved
U7000
The fix, the readings that point to it and the guided tree are in the app. Free account
5 V at 0.23 to 0.31 A, one port cycling: a CD3217 or the TBT ROMs U2890 and UB090
Seen in 15% of recorded fixes on this board.
Symptoms
One port differs.
Parts involved
U2890, UB090
The fix, the readings that point to it and the guided tree are in the app. Free account
20 V at 0.03 to 0.08 A: short on PP3V3_S5
Seen in 10% of recorded fixes on this board.
Symptoms
20 V, 0.03 to 0.08 A.
Parts involved
U4801
The fix, the readings that point to it and the guided tree are in the app. Free account

Compatible donors

Donor boards

820-01700 (CD3217s must come from another 820-01700; ISL9240 from a donor)

Sister boards and shared circuits

820-01598: ISL9240 at U7000, U9000 SSD power, Calpe PMU U7800, U4801 PP3V3_S5 inject point

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Identity and revisions

Brand: Apple
Device: MacBook Pro
Model: A2141
Identifier: MacBookPro16,1
Board: 820-01700
Revisions: A

Power rails, in sequence

Net	Nominal	Role
PPDCIN_G3H	20 V	Charger input at C7024, C7043, C7027 or C7026; diode mode to ground about 0.550
PPBUS_G3H	12.62 V	Main bus at F7000; 12.60 to 12.65 V normal, 12.28 to 12.35 V with the T2 not booted; diode mode about 0.410
PP3V3_G3H_RTC_X	3.3 V	3.3 V from U6960 for the CD3217s at C3100; diode about 0.420; over 1 kΩ to ground
PP3V3_G3H_SOCPMU	3.3 V	3.3 V from U7650 to the T2 and PMU at C7893 or C7869; diode about 0.378
PP0V9_SSD0	0.9 V	NAND rail; diode 0.400 to 0.500
PP2V5_NAND_SSD1	2.5 V	NAND rail from U9580 (L9581); diode 0.400 to 0.500
PP1V8_SSD0	1.8 V	NAND rail; diode 0.380 to 0.450
PP2V5_NAND_SSD0	2.5 V	NAND rail from U9080 (L9081); diode 0.400 to 0.500; over 60 Ω to ground
PP1V8_S5	1.8 V	Intel S5 rail
PP3V3_S5	3.3 V	Intel S5 rail; diode about 0.335

Checked on 2026-10-29 against 2 sources: verified. Revision A is a placeholder until Studio records the real revisions.

Known faults