Welcome to EDAboard.com

Welcome to our site! EDAboard.com is an international Electronic Discussion Forum focused on EDA software, circuits, schematics, books, theory, papers, asic, pld, 8051, DSP, Network, RF, Analog Design, PCB, Service Manuals... and a whole lot more! To participate you need to register. Registration is free. Click here to register now.

Register Log in

[SOLVED] Cpin: Not inserted ? Getting error on sim 900a

Status
Not open for further replies.

N.Karthick

Junior Member level 2
Joined
Sep 19, 2014
Messages
24
Helped
0
Reputation
0
Reaction score
0
Trophy points
1
Location
Tirupur, India
Activity points
166
Hi friends,

Recently i'm getting error msd form sim900a.

error is cpin;
AT com+Response of my modem.
AT
OK
AT+CSQ
+CSQ: 27,0
AT+COPS?
+COPS: 0
OK
AT+COPS=?
+COPS: (1,"AirTel","AirTel","40494"),(1,"Vodafone IN","Vodafone","40443"),(1,"AI
RCEL","AIRCEL","40442"),,(0,1,4),(0,1,2)

OK


AT+CPIN?
ERROR
AT+CFUN?
ERROR
AT+CGREG?
+CGREG: 0,0


can't connect with network.
help me:|!

- - - Updated - - -

the voltage from sim_vdd pin30 is always low only 3.0mV is shown. what can i do?

- - - Updated - - -

now i got the output, i found my mistake when i check the sim holders continuity in diode mode.
i palce my RED probe on 5pin then check one by one all the pins shows .665v(ie.0.0<1000mV). my 7 pin shows no connection after replace i got output.
Form this probs i got lot of knowledge on sim900a.
 

Status
Not open for further replies.
Toggle Sidebar

Part and Inventory Search

Welcome to EDABoard.com

Sponsor

Top