Earphone Problems; Loudspeaker Problems - Sony Ericsson Aino - U10 Troubleshooting Manual

Earphone Problems

START
1: Load ETS SW into the Phone
2: Use TRS Fixture and Connect:
Slider FPC Assy, Display 3" TFT and PBA Top to the PBA
3: Connect: VBATT and DCIO/SEPI
4: Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Earphone
Slider FPC Assy, Display 3" TFT and PBA Top from the PBA
1: Quit TRS SW and Disconnect: VBATT and DCIO/SEPI
Replace
PBA Top,
Slider FPC Assy or
Display 3" TFT
TROUBLESHOOTING
More than
Replace
400mV Pk-Pk
Ear Speaker, PBA
1 kHz signal at MP 59 Yes
Top, Slider FPC Assy
(X101) and MP 60
or Display 3" TFT
(X102)
No
1: Close TRS SW
Disconnect: VBATT and DCIO/SEPI
2: Disconnect:
Are SL 5 Replace
L3105 and L3106 No L3105 or L3106
= Max 1 Ohm SL 4 Escalate
Yes
1: Connect: VBATT and DCIO/SEPI
2: Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Earphone
More than
400mV Pk-Pk SL 5 Replace
1 kHz signal at MP 16 No N2000
(L3105) and MP 15 SL 4 Escalate
(L3106)
Yes
2: Perform a Visual Inspection of the
X4200 BtB Connector
Is the
X4200 BtB Replace
Yes No
Connector X4200
Ok
Earphone Problems - Loudspeaker Problems

Loudspeaker Problems

START
1: Load ETS SW into the Phone
2: Use TRS Fixture and Connect:
Keyboard FPC Assembly
3: Connect: VBATT and DCIO/SEPI
4: Use Fault Trace SW and go to:
Audio and FM Radio
Audio Tone
Activate:
INIT TONE TEST
Activate:
Loudspeaker
Replace
N3100
SEMC Troubleshooting Manual
Aino - U10
More than
Replace
900mV Pk-Pk
Keyboard FPC
1 kHz signal at MP 58 Yes
Assembly or Carrier
(X3102) and MP 57
Inner Assembly
(X3103)
No
More than
SL 5 Replace
400mV Pk-Pk
No N2000
1 kHz signal at MP 17
SL 4 Escalate
(C3137)
Yes
1.8 Volt DC at SL 5 Replace
MP 5 (R3153 No N2010
AMP_CTRL) SL 4 Escalate
Yes
1: Close TRS SW
Disconnect: VBATT and DCIO/SEPI
2: Disconnect:
Keyboard FPC Assembly from the PBA
Are SL 5 Replace
L3107 and L3108 No L3107 or L3108
= Max 1 Ohm SL 4 Escalate
Yes
Perform a Visual Inspection of the
X2500 BtB Connector
Is the
X2500 BtB Replace
Yes No
Connector X2500
Ok
1235-5821 rev. 1 19 (57)