Page 1
C450
Debug Guide Level3
Motorola Confidential Propietary
DEBUG GUIDE
C450
LEVEL 3
No power up............................................................................................pag. 2, 3 y 4
No Tx in GSM.........................................................................................pag. 5
No Tx in DCS..........................................................................................pag. 6
No Rx.......................................................................................................pag. 7
Procedure for flash´s recover…………...................................................pag. 10, 11 y 12
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
1
Page 2
C450
p
Debug Guide Level3
Motorola Confidential Propietary
Connect the phone with battery
from USB port to Radiocomm,
switch on the phone.
Is the phone switch on?
Yes
END
No
Yes
Disassembly the mobile
and see the keypad, ¿is
it dirty or bad
ositioned?
Replace
keypad mylar
No
Measure in C949, is
there voltage:
B+ = 3.6v?
No
Replace
U920
Yes
Make the wachdog,
make a shortcut about
R917´s contacts
Go to “A”
pag.3
NO
POWER UP
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
2
Aproved by: Luis Alberto Lázaro
Page 3
C450
Debug Guide Level3
Motorola Confidential Propietary
“A”
Are there that voltages?:
DIG_1.875= 1.8v on C933
AUD 2.65= 2.6v on C921
are ok?
No
Yes
No
Measure
CS0B on the R710,
Is there FLASH´s
signal?(Fig.1)
NO
POWER UP
Replace
U900
Replace
U701
Yes Fig. 1
No
Measure on CS1B(TP5043),
Is there SRAM´s signal?
(Fig. 2)
Replace
U705
Yes
Fig. 2
Go to “B”
pag. 4
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
3
Aproved by: Luis Alberto Lázaro
Page 4
C450
Debug Guide Level3
Motorola Confidential Propietary
No
Is there the clock´s signal of
Yes
“B”
Measure on
Y901,
26MHz?(Fig. 3)
Replace
Y901
Fig. 3
No
Is there the clock´s signal of
Measure on
Y900,
32MHz?(Fig. 3)
Replace
Y900
Yes
Replace
PCB
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
4
Page 5
C450
Debug Guide Level3
Motorola Confidential Propietary
Connect the phone from USB port to
Radiocomm. Switch on the phone and
put it transmit in GSM, in the channel 62
and 15 of power.
No
Measure on R152, Is there
signal
TX_CP = 2.9v.?
Yes
Measure on R301, Is there
signal
TX = 902.4MHz?
No
Yes
No Yes
Measure on J100, is there
signal
TX = 902.4MHz?
Measure on
VM_REG(C909)
Is there 4.7v?
Yes No
Replace
PCB
Replace
U900
NO TX
IN GSM
Replace
U800 and
U701
Replace
U150
Replace
U300
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
5
Page 6
C450
Debug Guide Level3
Motorola Confidential Propietary
Connect the phone, from USB port to
Radiocomm. Switch on the phone and
put it to transmit on DCS, in the channel
700 (1747.8MHz) and 15 of power.
No
Measure on R152,
Is there signal
TX_CP=2.5v.?
U800 and
Yes
No
Measure on C153,
Is there signal
TX = 1747.8MHz?
Yes
No Yes
Measure on J100,
Is there signal
TX = 1747.8MHz?
Measure on
VM_REG(C909)
Is there 4.7v?
Yes No
Replace
PCB
Replace
U900
NO TX
ON DCS
Replace
U701
Replace
U150
Replace
U300
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
6
Page 7
C450
Debug Guide Level3
Motorola Confidential Propietary
Connect the phone, with external supply,
from USB port to Radiocomm, switch on
the phone and put it received. Inject a
signal (-50 dBm GSM channel or -50
dBm DCS cannel) to external connector
(J100).
Is there above signal in
the U300 (pad 37 for DCS
No Yes
or pad 39 for GSM)?
Measure on
VM_REG(C909), is
there 4.7v?
No
Yes
Replace
U900
Replace
U150
NO RX
Replace
FL130
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
7
Page 8
C450
Debug Guide Level3
Motorola Confidential Propietary
NOTES
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
8
Page 9
C450
Debug Guide Level3
Motorola Confidential Propietary
NOTES
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
9
Page 10
C450
Debug Guide Level3
Motorola Confidential Propietary
PROCEDURE FOR FLASH´S RECOVER C450
.- This procedure is only for no power up, power down in standby itself or “blocked”,
failures.
1.- When connecting the transceiver with above failures to Windows 2000, PST program
do not establish connection.
2.- Remove the R810.
3.- Connect the transceiver with a battery and mini-USB´port to Windows NT and
PST´program, after download this file:
E380_G_0A.03.5AR_gsm_flash_dev_16M.shx
4.- Add R810.
5.- Connect the transceiver with a battery and mini-USB´port to Windows 2000 and
PST´progam, after download last software´s version.
6.- After downloading the 44 NVM/elements, phasing the transceiver with GPGATE.
7.- Master Reset and Master Clear.
To read the NVM / Seem Elements from a golden unit:
1.- Connect the transceiver to Internal Radiocomm, INITIALIZE it and SUSPEND it.
2.- Select PHONE and NV/SEEM.
3.- In PRODUCT select the platform.
4.- Select READ.
5.- Save the NVM / elements with a product´s name
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
10
Page 11
C450
Debug Guide Level3
Motorola Confidential Propietary
Written by: Juan A. Ortiz / 27-01-04 Versión 1.2
Aproved by: Luis Alberto Lázaro
R810
11
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