REMOTE COMMANDER
(RM-AMU212)
Mechanism Type: T33DS
Optical Pick-up Block Name: S76RFS7GP
Amplifier section
Power output (rated): 8 watts + 8 watts (at 8 ohms, 1 kHz, 1% THD)
RMS power output (reference):
10
watts + 10 watts (per channel at 8 ohms, 1 kHz)
Speaker section
Speaker system: Full-range speaker, Passive
radiator
Rated impedance: 8
ohms
Power requirements:
AC
120 V - 240 V, 50 Hz/60 Hz
(Singapore and Thai models)
AC 110 V - 240 V, 50 Hz/60 Hz (Taiwan model)
AC 220 V - 240 V, 50 Hz/60 Hz (Korean model)
The
laser diode in the optical pick-up block may suffer electrostatic break-down
because of the potential difference generated by the charged electrostatic
load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also use the
procedure in the printed matter which is included in the repair parts.
The flexible board is easily damaged and should be handled with care.
CAPACITOR ELECTRICAL DISCHARGE PROCESs
When
checking the board, the electrical discharge is necessary for the electric
shock prevention.
Connect the resistor to both ends of respective capacitors.
MODEL IDENTIFICATION
Distinguish
by Part No. of model number label stuck on the bottom side of a main unit.
Note: The printed contents of
following figure model number label may be different from the model number
label of a main unit.
When each boards
installed in this unit are defective, individual electrical parts that the
mount is done cannot be replaced. When each boards are defective, replace the
mounted board or the whole parts including an applicable board.
NOTE THE REPLACING OF MA BOARD OR NFC MODULE
When replacing the MA
board or the NFC module, be sure replace both at the same time.
The MA board or the NFC module cannot replace with single.
TEST DISCS
Use following TEST
DISC (for CD) when this unit confirms the operation and checks it.
Part No. Description
|
3-702-101-01 |
DISC (YEDS-18), TEST |
RELEASING THE DISC SLOT LOCK
The disc slot lock
function for the antitheft of sample disc in the shop is equipped.
Releasing Procedure:
1.
Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for
five seconds.
3. The message “UNLOCKED” is displayed on the fluorescent indicator tube and
the disc slot is unlocked.
Note: When “LOCKED” is
displayed, the disc slot lock is not released by turning power on/off with the
[Power] button.
No Display When You Turn the Main
Unit ON, When you plug power cord and turn the main unit on, VFD won’t display.
1.
Check PW board +13V DC output.
2. Check MA board output -24V from U18 on the MA board. If -24V is not normal, check the working
status of U18 on the MA board.
3. Check +3.3V from U3 on the MA board. If
+3.3V is not normal, check the working status of U3 on the MA board.
4. Check the waveform of Y1 on the MA board, the waveform of Y1 on the MA board
sine wave. If the waveform of Y1 on the
MA board is not normal, check Y1 on the MA board.
When You Plug Power Cord and Turn The Main Unit ON, The Main Unit Won’t
Have Sound
1.
Check U6 on the MA board and its peripheral circuit.
2. Check voltage +3.3V from pin 33, pin 60, pin 63, pin 70, pin 72, pin 78, pin
83 and pin 90 of U6 on the MA board. If
the voltage +3.3V is not normal, check +3.3V power circuit of MA board.
3. Check voltage +1.2V from pin 11, pin 77 and pin 86 of U6 on the MA board. If the voltage +1.2V is not normal, check
+1.2V power circuit of MA board.
4. Check if oscillating frequency 27 MHz of Y1 crystal on the MA board is
normal. If the oscillating frequency 27
MHz is not normal, check if Y1 on the MA board and its peripheral circuit is in
failure.
5. Check if the status of U17 and U25 on the MA board works well, the normal
status of pin 27 of U25 on the MA board is sine wave with frequency 11.0592
MHz. And pin 23 of U25 on the MA board is high in normal status. If pin 27 of U25 on the MA board wave is not
normal, check if U17 and U25 on the MA board and its peripheral circuit is in failure.
When You Plug Power Cord and Turn The Main Unit ON, The Main Unit Won’t
Read Disc Normal
1.
Check U6 on the MA board signal and its peripheral circuit, and check +3.3V
from pin 8 of U5 on the MA board is normal.
If +3.3V is not normal, check +3.3V power circuit of MA board.
2. Check every signal connected between U5 and U6 on the MA board, especially
including DATA, CLK and CS signal. If
DATA, CLK and CS signal is not normal output, check if U6 on the MA board is in
failure.
3. Check if +5V from pin 8, pin 19 and pin 21 of U7 on the MA board is normal. If +5V is not normal, check +5V power circuit
of MA board.
4. Check every signal connected between U6 and U7 on the MA board, especially
FOCUS_S, SPDL_S, XOPVIN1, SLED_S, TRACK_S, VREF2 and DRVSB signal to drive MD. If FOCUS_S, SPDL_S, XOPVIN1, SLED_S, TRACK_S,
VREF2 and DRVSB signal is not normal output, check if U7 on the MA board is in
failure.
When You Plug Power Cord and Turn The Main Unit ON, The Wireless Set
Can’t Connect The Bluetooth of the Main Unit.
1.
Check +3.3V from pin 29 and pin 32 of U13 on the MA board. If +3.3V is not normal, check +3.3V power
circuit of MA board.
2. Check U13 on the MA board signal and its peripheral circuit, make sure U13
is in failure or not. 3. Touch the NFC, you can’t awake the Main Unit, but you
can connect the Bluetooth directly, check the connection between the NFC module
and the MA board.
If the connection is normal, check the NFC module.
HOW TO EJECT THE DISC WHEN POWER SWITCH TURN OFF or there is No Power
SOFTWARE VERSION
It
can confirm the software version.
1. Press the [Power] button to turn the power on.
2. Press the [ PAIRING FUNCTION] button to turn the CD function.
3. Press the button on the remote commander as following order. [CREAR] → [B] →
[RETURN]
(Displayed values in the following figure are example)
4. The software version display disappears in about 7 seconds, and it returns to the display of the normal mode.
FACTORY RESET
It
can clear all settings and the Bluetooth link history to initial conditions.
Execute this mode when returning the this unit to the customer.
1. Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [Eject] simultaneously for
five seconds.
3. The message “RESET” is displayed on the fluorescent indicator tube, then
returns to the normal mode.
DISC SLOT LOCK
It
can be unable to take sample disc out of disc slot in the shop.
1. Press the [Power] button to turn the power on.
2. Insert a disc in the unit.
3. Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for
five seconds.
4. The message “LOCKED” is displayed on the fluorescent indicator tube and the
disc slot is locked.
(Even if pressing the [Eject] button, the message “LOCKED” is displayed on the
fluorescent indicator tube and the disc slot is locked)
Releasing method:
1.
Press two buttons of the [ PAIRING FUNCTION] and [VOL-] simultaneously for five
seconds.
2. The message “UNLOCKED” is displayed on the fluorescent indicator tube and
the disc slot is unlocked.
VFD TEST
It
can confirm the fluorescent indicator tube.
1. Press the [Power] button to turn the power on.
2. Press two buttons of the [ PAIRING FUNCTION] and [VOL+] simultaneously for
five seconds.
3. All segments on the fluorescent indicator tube light up.
4. All segments turn off the light in about 3 seconds, and it returns to the display of the normal mode.
Bluetooth ON/OFF
It
can turn on or off the wireless signal of Bluetooth.
1. Press the [Power] button to turn the power on.
2. Press the [ PAIRING FUNCTION] button to turn the BT AUDIO function.
Note 1: When the Bluetooth
function to select the “BT AUDIO” in the state off, the “BT OFF” is displayed.
3. Press two buttons of the [ >|| ] and [VOL +] simultaneously for five
seconds.
4. The message “BT ON” or “BT OFF” is displayed on the fluorescent indicator
tube, it turn on or off the wireless signal of Bluetooth.
Note 2: When the Bluetooth
function is the state off, when performed the NFC one touch connection or the
power off to unplug the AC power cord, Bluetooth function is switched on from
off.
Block diagram
Wiring diagram
SMPS [Power supply] board schematic diagram
Exploded views
