Sony MHC-V5 (serv.man3) Service Manual ▷ View online
17
3-4. Circuit operation (CD playback)
Page 38
1: Audio processor (IC301)
boots up.
boots up.
3: System controller (IC101)
checks mechanical loading
condition with switch inputs.
checks mechanical loading
condition with switch inputs.
2: Audio processor (IC301)
reads operation firmware
from SERIAL FLASH (IC302).
reads operation firmware
from SERIAL FLASH (IC302).
4: System controller (IC101)
outputs loading motor
signals.
outputs loading motor
signals.
5: Motor driver (IC401)
outputs loading motor
driving signals and
set to loading position.
outputs loading motor
driving signals and
set to loading position.
6: Audio processor (IC301)
outputs each servo control
signals for disc reading.
outputs each servo control
signals for disc reading.
7: Motor driver (IC401)
outputs each servo driving
signals for disc reading.
outputs each servo driving
signals for disc reading.
8: Optical pickup outputs
RF signal to Audio
processor (IC301).
RF signal to Audio
processor (IC301).
9: Audio processor (IC301)
decodes RF signal with
SD RAM(IC306).
decodes RF signal with
SD RAM(IC306).
10: Audio processor (IC301)
outputs decoded audio signal to
Digital Audio selector (IC607).
outputs decoded audio signal to
Digital Audio selector (IC607).
18
3-5. Circuit operation (Signal processing)
11: Decoded audio signal
passes through
Digital audio selector (IC607)
passes through
Digital audio selector (IC607)
Page 39
13: Audio signal is processed in
System controller. (IC101)
(Sound field, level control, etc.)
System controller. (IC101)
(Sound field, level control, etc.)
12: Clock for signal processing
is converted by Sample rate
Converter (IC610)
is converted by Sample rate
Converter (IC610)
14: Audio signal is
output to AMP circuit.
output to AMP circuit.
19
3-6. Circuit operation (D/A and Amplifier)
15: Digital audio signal converts to
Analog audio signal in DAC
(IC611, IC615)
Analog audio signal in DAC
(IC611, IC615)
Page 40
17: Audio signal is
amplified by
AUDIO AMP.
(IC1009, IC1011,
IC1012) and
boosters (FET).
amplified by
AUDIO AMP.
(IC1009, IC1011,
IC1012) and
boosters (FET).
18: Audio signal is
output from
speakers.
output from
speakers.
16: Audio signal is
amplified by
PRE AMP
(IC1015 IC1016)
amplified by
PRE AMP
(IC1015 IC1016)
19: FAN motor is
driven in
playback mode
basically. (5V)
If the output
level is high,
motor speed
increases.(12V)
driven in
playback mode
basically. (5V)
If the output
level is high,
motor speed
increases.(12V)
Repair tips:
To check AMP circuit
condition, compare the
resistance of each speaker
output terminal after
removing speaker cords.
(Approx. 10-30k ohm => OK)
To check AMP circuit
condition, compare the
resistance of each speaker
output terminal after
removing speaker cords.
(Approx. 10-30k ohm => OK)
3-7. Circuit operation (NFC/Bluetooth)
Page 41
2: System controller (IC101)
decodes NFC signal and
start pairing operation.
decodes NFC signal and
start pairing operation.
1: NFC module detected
NFC signal.
NFC signal.
Page 39
2: System controller (IC101)
decodes BT signal and
process the sound field
for output.
decodes BT signal and
process the sound field
for output.
1: Bluetooth signal is detected
by BT module.
by BT module.
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