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17. SD memory card is not recognised.
Prepare the SD memory card. [*1]
Put the SD memory card. Is it recognised?
NO
Check for proper fit of CN2001. Is there any
problem?
YES
Is 2.9 V applied to TP2027?
YES
Are signals sent to R2000, R2001, R2002,
R2003 and R2022?
NO
Are signals sent to R1528, R1529, R1530,
R1531, R1532 and R1533?
NO
IC1500 is defective.
18. Music on SD memory card cannot be played.
[Music is not heard through the headphones]
Is music heard from the speaker?
NO
Is the audio waveform sent to TP1605 and
TP1606?
NO
Are signals sent to R1625 and R1626?
NO
Is the rectangular wave is sent to R1565,
R1571, and R1572?
NO
IC1500 is defective.
CONFIDENTIAL
[*1] Use the specified, formatted SD card for 902SH.
It does not matter if data exists or not.
SD memory card is defective.
YES
CN2001 has poor fit.
NO
IC2001 is defective.
NO
CN2001 is defective.
YES
The SD PWB or its flexible PWB is defective.
YES
Otherwise, CN2000 and CN1500 are defective.
The headphones are defective, JK1600 is
YES
defective, or the headphone socket fails to be
detected. C1674, C1675, L1600, and L1601
are defective.
The headphones are defective, JK1600 is
YES
defective, or the headphone socket fails to be
detected. C1674, C1675, L1600, and L1601
are defective.
C1629, C1630, C1671, C1672, R1625, R1626,
YES
Q1601 and Q1602 are defective.
IC1600 is defective.
YES
2 – 39
902SH
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