Sony PCS-G70N Service Manual page 53

No.14
VideoENC1 (IC1501/CPU-382)
No
Check the power supply
Is pin 6 of IC1501/CPU-382
+3.3 V (±10%)?
Yes
Check the clock No
Is JC1504/CPU-382
27 MHz?
Yes
Check the
IC1501/CPU-382,
or the peripheral circuit.
No.16
VideoDEC (IC1902/DSP-113)
No
Check the power supply
Is pin 1 of IC1902/DSP-113
+3.3 V (±10%)?
Yes
No
Check the clock
Is pin 7 of JC1902/DSP-113
24.576 MHz?
Yes
Check the
IC1902/DSP-113,
or the peripheral circuit.
PCS-G70N/G70NP/G70NP2
PCS-G70S/G70SP
VideoENC2 (IC1504/CPU-382)
Check the followings
. IC1511/CPU-382,
or the peripheral circuit
. IC303/PS-686,
or the peripheral circuit
Check the followings
. IC506/CPU-382,
or the peripheral circuit
. IC102, IC103,
X101/DSP-113,
or the peripheral circuit
Check the
IC1902, IC2401/DSP-113,
or the peripheral circuit.
Check the
IC1908, X1901/DSP-113,
or the peripheral circuit.
No.15
Check the power supply No
Is pin 6 of IC1504/CPU-382
+3.3 V (±10%)?
Yes
No
Check the clock
Is JC1507/CPU-382
27 MHz?
Yes
Check the
IC1504/CPU-382,
or the peripheral circuit.
No.17
VideoDEC (IC1903/DSP-113)
No
Check the power supply
Is pin 1 of IC1903/DSP-113
+3.3 V (±10%)?
Yes
No
Check the clock
Is pin 7 of IC1903/DSP-113
24.576 MHz?
Yes
Check the
IC1903/DSP-113,
or the peripheral circuit.
Check the followings
. IC1511/CPU-382,
or the peripheral circuit
. IC303/PS-686,
or the peripheral circuit
Check the followings
. IC506/CPU-382,
or the peripheral circuit
. IC102, IC103,
X101/DSP-113
or the peripheral circuit
Check the
IC1902, IC2401/DSP-113,
or the peripheral circuit.
Check the
IC1908, X1901/DSP-113,
or the peripheral circuit.
4-15 (E)