Sony MHC-V5 (serv.man3) Service Manual ▷ View online
Page 36
#PANEL test
You can check FL display, LED and key input in this test mode.
Page 37
#SERVO CHECK
You can disc playability with this test mode instantly.
By using good condition disc, you can confirm the playability of the set.
If the set is good condition, you can check the disc playability with this mode.
Only the most inner part condition of the disc can be checked in this mode.
This mode doesn’t support check of the disc condition of all surface.
#PANEL test
You can check FL display, LED and key input in this test mode.
Page 37
#SERVO CHECK
You can disc playability with this test mode instantly.
By using good condition disc, you can confirm the playability of the set.
If the set is good condition, you can check the disc playability with this mode.
Only the most inner part condition of the disc can be checked in this mode.
This mode doesn’t support check of the disc condition of all surface.
(Scratch, etc.)
2-5. MHC-V5 Test mode
Most inner part
Scratch
3-1. Circuit operation (Standby mode of Power saving mode)
14
1: AC voltage input
4: System controller
boots up.
boots up.
2: Power supply board
outputs 13.5V for
SYSCON booting.
outputs 13.5V for
SYSCON booting.
MICOM
+ DSP
+ DSP
Page 41
3: EVER+3.3V outputs
from D/D Converter
(IC002)
from D/D Converter
(IC002)
Repair tips:
Original standby mode is
“demonstration” mode.
In this mode, FL tube and
Speaker LED operates for
demonstration.
By pressing DISPLAY button
while the set turn off, the
mode can be shifted to
“Power saving” and “clock”.
Original standby mode is
“demonstration” mode.
In this mode, FL tube and
Speaker LED operates for
demonstration.
By pressing DISPLAY button
while the set turn off, the
mode can be shifted to
“Power saving” and “clock”.
Repair tips:
EVER+3.3V output can be
checked at ARAGON board
connecter terminal.
(CN304 pin1 and 2)
EVER+3.3V output can be
checked at ARAGON board
connecter terminal.
(CN304 pin1 and 2)
Repair tips:
13.5V output can be checked
at connecter terminal
(CN001 pin1 and 3)
13.5V output can be checked
at connecter terminal
(CN001 pin1 and 3)
15
3-2. Circuit operation (System control)
5: System controller (IC101)
boots up and start to read
operation firmware from
Flash ROM (iC106).
boots up and start to read
operation firmware from
Flash ROM (iC106).
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6: System controller reads
back up data from EEPROM.
(Last function, volume,
Preset tuner, etc.)
Back up data is recorded
only when the set turn off
with power key input.
back up data from EEPROM.
(Last function, volume,
Preset tuner, etc.)
Back up data is recorded
only when the set turn off
with power key input.
Note:
The backup data is written only
when the set turns off with
power button. If AC cord is pulled
off, the backup data is not saved.
The backup data is written only
when the set turns off with
power button. If AC cord is pulled
off, the backup data is not saved.
3-3. Circuit operation (Wakeup operation)
16
8: System controller
outputs several
Power Control
signals.
outputs several
Power Control
signals.
7: Wake up key inputs
to System controller.
to System controller.
Page 41
12:LED driver(IC2002)
turns on each LEDs.
turns on each LEDs.
10: Switching Regulator
starts to output
additional voltages.
(AMP circuit, etc.)
starts to output
additional voltages.
(AMP circuit, etc.)
9: Several switches
turn on and output
voltages.
(FL tube, etc.)
turn on and output
voltages.
(FL tube, etc.)
11: FL tube turns on
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