Samsung ML-7300N Especificaciones descargar pdf (Pagina 124)

Product Information

Samsung Electronics10-6

System Error

CPU's input

voltage = +5V ?

CPU's pin No. 82

Reset input level = High ?

Check the Network Board

(1) ROM installing ?

(2) Soldering status ?

Check the TMODE(pin no. 63, 64) input

level : Low

Check the EXTMREQ(pin no. 108) input

level : Low

Replace the board

If you can't repair the board

System Error

Check the filter (BD1)

Yes

U19(pin no 12)

and U165(pin no 22)'s

Reset input level = High ?

CPU(pin no 80)'s

input Clock = 33MHz ?

Check the Y1, R104 and R113

U22(pin no 63)'s

input clock = 33MHz ?

Check the soldering status

Check the CPU(pin no 77) and R102

Check the U22's pin no. 75

Reset signal :

Nomally High during operation

Check the connector J1's pin no. 39

Check the U22's pin no. 123

Check the U22's pin no. 75

Reset signal :

Nomally High during operation

CPU : U26

NetBridge : U22

Flash ROM : U19

DRAM : U18

PHY Chip : U165

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Samsung ML-7300N Especificaciones Pagina 124