Sony PCS-G70N Service Manual page 54

Video communication system
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No.18
VideoNR (IC1904/DSP-113)
Check the power supply
No
Is pin 15 of IC1904/DSP-113
+3.3 V (±10%)?
Yes
Check the clock
No
Is pin 16 of IC1904/DSP-113
27 MHz?
Yes
Check the
IC1904/DSP-113,
or the peripheral circuit.
4-16 (E)
Check the
IC2401/DSP-113,
or the peripheral circuit.
Check the
IC1902, IC1908,
X1901/DSP-113,
or the peripheral circuit.
No.19
Video NR(IC1905/DSP-113)
Check the power supply
No
Is pin 15 of IC1905/DSP-113
+3.3 V (±10%)?
Yes
No
Check the clock
Is pin 16 of IC1905/DSP-113
27 MHz?
Yes
Check the
IC1905/DSP-113,
or the peripheral circuit.
Check the
IC2401/DSP-113,
or the peripheral circuit.
Check the
IC1903, IC1908,
X1901/DSP-113,
or the peripheral circuit.
PCS-G70N/G70NP/G70NP2
PCS-G70S/G70SP

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