Sony PCS-G70N Service Manual page 51

No.10
VOA (IC801/CPU-382)
No
Check the power supply
Is FB801/CPU-382
+3.3 V (±10%)?
Yes
Check the clock No
Is pin 19 of IC506/CPU-382
27 MHz?
Yes
No
Are other SH bus devices
/CPU-382 OK?
Yes
Check the IC801/CPU-382,
or the peripheral circuit.
PCS-G70N/G70NP/G70NP2
PCS-G70S/G70SP
Check the IC302/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 followings
. Bus buffers
(IC2209-IC2216/CPU-382)
or the peripheral circuit
. IC302, IC402/CPU-382,
or the peripheral circuit
No.11
VIA1 (IC2101/DSP-113)
No
Check the power supply
Is FB2101/DSP-113
+3.3 V (±10%)?
Yes
No
Check the clock
Is JC2104/DSP-113
54 MHz?
Yes
No
Check the clock
Is JC2105/DSP-113
27 MHz?
Yes
Check the
IC2101/DSP-113,
or the peripheral circuit.
Check the
IC2401/DSP-113,
or the peripheral circuit.
Check the
IC101, X101/DSP-113,
or the peripheral circuit.
Check the
IC105, IC103, IC102,
X101/DSP-113,
or the peripheral circuit.
4-13 (E)