33
3.3. Analog audio doesn t output.
Check the power supply voltage for U801 .
・
12V (U801 8pin 11V Upper)
・
-12V (U801 4pin -12V Low
）
Check the power supply voltage for U802 .
・
V(U802 11pin)
Check the input and output voltage for U702 .
Check soldering.
・
U702(N M78M0 ) CE20 C88
Check the cathode voltage for D (2pin).
・
Reproducing : -6V (Low)
Replace the MAIN UNIT.
Check the digital input siginal for U802 .
・
AOMCL (U802 pin) Mater Clock
・
AOSDATA0 (U802 6pin) Digital Data
・
AOBC
(U802 7pin) Bit Clock
・
AOLRC
(U802 8pin) LR Clock
Replace the U802 .
Check the mute control signal and ERO Detect
signal for U802(DAC) ( : ero Detect).
・
MUC AMUTE (Low)
・
MT8 30 AMUTE(Low)
・
U802 16pin(Low)
Check soldering.
・
21 D866
12
18
16
13
Check the audio output for U801 .
・
Lch(U801 1pin)
・
Rch(U801 7pin)
Check soldering.
・
U801 C 39 R967 R963 C967 R9 6 R964
C964 C 40 R968 R96 C968 R966 R9 7
C96
Check the POWER UNIT.
N.G.
N.G.
N.G.
N.G.
O. .
O. .
O. .
O. .
O. .
N.G.
Replace the 861 .
O. .
