Sony PCS-G70N Service Manual page 49

No.6
TI-DSP(MUX) (IC1651/CPU-382)
Check the power supply
No
Is FB1802/CPU-382
+3.3 V (±10%)?
Yes
No
Check the power supply
Is FB1801/CPU-382
+1.4 V (±10%)?
Yes
Check the clock No
Is pin 3 of X1651/CPU-382
50 MHz?
Yes
No
Are other SH bus devices
/CPU-382 OK?
Yes
Check the
IC1651/CPU-382,
or the peripheral circuit.
PCS-G70N/G70NP/G70NP2
PCS-G70S/G70SP
TI-DSP(ENC) (IC201/DSP-113)
Check the IC301/PS-686,
or the peripheral circuit.
Check the
IC2405/CPU-382,
or the peripheral circuit.
Check the
IC1651, X1651/CPU-382,
or the peripheral circuit.
Check the followings
. IC101/CPU-382,
or the peripheral circuit
. Bus buffers
(IC2209-IC2216/CPU-382)
or the peripheral circuit
No.7
Check the power supply
No
Is FB402/DSP-113
+3.3 V (±10%)?
Yes
Check the power supply
No
Is FB401/DSP-113
+1.4 V (±10%)?
Yes
No
Check the clock
Is pin 3 of X301/DSP-113
50 MHz?
Yes
No
Are other SH bus devices
/DSP-113 OK?
Yes
Check the IC201/DSP-113,
or the peripheral circuit.
Check the
IC2401/DSP-113,
or the peripheral circuit.
Check the
IC2402/DSP-113,
or the peripheral circuit.
Check the
IC201, X301/DSP-113,
or the peripheral circuit.
Check the followings
. IC101/CPU-382,
or the peripheral circuit
. Bus buffers
(IC2301-IC2307/DSP-113)
or the peripheral circuit
. B to B connector,
or the peripheral circuit
4-11 (E)