Today we’ve got another old device to look into, the D-Link DSL-502T ADSL2 Modem which is simple ADSL2 modem that has 10/100 Ethernet and USB.
Two screws later and we’re in.
As with these old devices there’s lots of capacitors on board, we have 4x Everon 1000uF and 2x Taicon 220uF near the input and we have an AP34063 DC-DC with a reasonably sized inductor and it looks like the input DC jack was intended for an AC adapter so they just bypassed the diodes with links. PCB date code is 7th week of 2003.
There are 2 other leaded inductors on board that are just hanging on their leads without being glued down. Also there are a few pin headers on the board, 2x 14 pin (one populated), 10 pin and a 5 pin populated.
Ti AR7 SoC
Our main chip which has an MIPS 32-Bit 160-MHz processor, 1x 10/100 PHY, ADSL PHY and USB. Running with a 25MHz and 35.328 MHz crystal.
TNETD7300
Hynix 128Mb SDRAM
HY57V281620
Spanison 32Mbit Flash
S29AL032D
And that’s all.
