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5.3.2 Speaker
:
a. Please play some music
L12 (C72) shall have audio signals.
b. L8 shall have VBAT (4.0V) input.
c. Pin#2 of R72 (GP42_SPK_AMP_SHDN#) shall be high (2.8V).
d. L9 and L11 shall have PWM signal with 4.0V level (VBAT_CELL).
5.3.3﹒ ﹒ ﹒ ﹒ Handset:
Receiver:
a. You can make a call for voice connection
L20 and L21 shall have voice (audio) signal.
(or run audio test from MMI testing program)
(or run audio test from MMI testing
GTC
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Service Manual
to speaker, L10 (C71) and
program), then
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