Epson ELPDC21: Difference between revisions

Revision as of 11:44, 14 January 2024

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At the moment this page only describes the mainboard called H757MA_R2 2176136. It is not known if other revisions exist or not.

	Type	Difficulty
Epson ELPDC21 Debugging UART	Troubleshooting/Diagnostics	3. Hard

Please consider contributing pictures to this section!

Please consider contributing pictures to this section!


Component RefDes	Marking	Name	Comment
IC2002, IC1903, IC2004, IC1901, IC1902, IC1900	QTZ	TPS62140RGTR/TPS62140RGTT	Step-down converter
IC2000	NR1	TLV70033DSER/TLV70033DSET	3.3V linear regulator
IC2003	NK1	TLV70018DSER/TLV70018DSET	1.8V linear regulator
IC1800	LPBG	LP2981-33	3.3V linear regulator
IC1600, IC1603	G8Y	S-80928CNNB-G8YT2x	2.8V Voltage detector with delay (IC1600 resets the main CPU, IC1603 resets the smaller microcontroller IC1000)
IC1000	C17W04F10J	Epson S1C17W04	16-bit Microcontroller, Always On
IC900		Hynix H27U4G8_6F2D / H27S4G8_6F2D	Nand Flash
IC1300	THP7312	THine THP7312	ISP chip
IC1	MCIMX6D5EYM10AD	IMX6DQCEC	Main CPU: i.MX 6Dual/6Quad Applications Processors for Consumer Products
C205		220nF	Author replaced mechanically damaged component, not sure about correctness of this measurement, but product worked with replacement.
C272		100nF	Author replaced mechanically damaged component, not sure about correctness of this measurement, but product worked with replacement.
R209		9.1 ohm	Author replaced mechanically damaged component, not sure about correctness of this measurement, but product worked with replacement.
R353		0 ohm link	Author replaced mechanically damaged component, not sure about correctness of this measurement, but product worked with replacement.


Component	Pin #	Name	Comment
CN1600	7	UART_TX	(TX from the board's perspective, runs at 460800 bps)
CN1600	8	UART_RX
CN1300	10	I2C_SCL	I2C line is shared by devices on the motherboard, but also goes to the camera head
CN1300	11	I2C_SDA
IC1600	4	Reset of the main CPU	Short this to ground to cause a main CPU reboot. (this is an open drain output of the voltage detector, so it's okay to short to ground)
CN2001	2	Power Button	Short this to ground to prompt the board to boot even when the flex cable to the interface board is not connected

You can manually link to external sources for additional information that might not fit here but are useful such as BIOS image dumps, firmware, etc!

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+At the moment this page only describes the mainboard called H757MA_R2 2176136. It is not known if other revisions exist or not.
 ==Guides==
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-=== Mainboard named H757MA_R2 2176136 ===
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-==== Voltages measured on working product (after turning on) ====
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-==== Useful Signals ====
+=== Useful Signals ===
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