Tuesday, 23 May 2017

Sony HCD-EX66/EX88/EX99 Reset, Tray lock, Panel, Version check and more - COMPACT DISC RECEIVER

Mexican model:
AC 127 V, 60 Hz
Argentine model:
AC 220 V ‒ 240 V, 50/60 Hz
Other models:
AC 120 V ‒ 240 V, 50/60 Hz
HCD-EX99: 85 W
(0.5 W at the Power Saving Mode)
HCD-EX88: 70 W
(0.5 W at the Power Saving Mode)
HCD-EX66: 45 W
(0.5 W at the Power Saving Mode)
Mechanism type: CDM76B-D1BD76
Optical pickup block names: DS11MMVGP
The laser beam on this model is concentrated so as to be focused on the disc reflective surface by the objective lens in the optical pickup block. Therefore, when checking the laser diode emission, observe from more than 30 cm away from the objective lens.
RELEASING THE DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.
Press [Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. While pressing the [Stop] button for more 5 seconds.
4. The message “CHILD LOCK OFF” is displayed and the disc tray is unlocked.
Note: When “CHILD LOCK ON” is displayed, the slot lock is not released by turning power on/off with the [Power] button.
When installing a new OP unit, be sure to connect the flexible printed circuit board first of all before removing the static electricity prevention solder bridge by unsoldering.
Remove the static electricity prevention solder bridge by unsoldering after the flexible printed circuit board has already been connected.
(Do not remove nor unsolder the solder bridge as long as the OP unit is kept standalone.)
COLD RESET
The cold reset clears all data including preset data stored in the memory to initial conditions. Execute this mode when returning the set to the customer.
Procedure:
1. In the standby status, press the [Power] button to turn the power on.
2. Press three buttons of [Stop], [FUNCTION] and [Power] simultaneously.
3. When “RESET” appears, the set enters standby status.
PANEL TEST MODE
Enter The Panel Test Mode
Procedure:
1. In the standby status, press the [Power] button to turn the power on.
2. Press three buttons of [Stop], [OPTIONS] and [power] simultaneously.
3. When the panel test mode is activated, all LEDs and segments of the liquid crystal display panel are all turned on.
Version Check
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid crystal display panel are turned on), press the [FUNCTION] button.
2. On the liquid crystal display panel, date and version are displayed “xxxxVxxx”.
3. From this status, press the [>||] button, and the destination and model name are displayed.
4. To release from this mode, press three buttons of [ Stop], [OPTIONS] and [Power] simultaneously.
Key Test Mode
Procedure:
1. In the panel test mode (all LEDs and segments of the liquid crystal display panel are turned on), press the [stop] button.
2. The message “KEY0 0 0” displayed. Whenever any buttons are pressed and the [VOLUME] control is turned, the value is changed.
3. To release from this mode, press three buttons of [Stop], [OPTIONS] and [Power] simultaneously.
CD TRAY LOCK
This mode is for the antitheft of CD disc in shop. (not for transport)
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Insert a disc.
4. While pressing the [Stop] button for more 5 seconds.
5. The message “CHILD LOCK ON” is displayed and the disc tray is locked. (Even if releasing from this mode, the disc tray is still locked)
6. If press the [Eject] button to eject the disc, the message “CHILD LOCK” is displayed and cannot eject the disc.
7. To release this lock, while pressing the [Stop] button for 5 seconds again.
8. The message “CHILD LOCK OFF” is displayed and the disc tray is unlocked.
CD POWER MANAGE
This mode is for switch the CD power supply on/off. Even if this state pulls out AC plug, it is held.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select CD function.
3. Press the [Power] button again to turn the power off (clock mode).
4. After pressing the [DISPLAY] button on the remote commander, while pressing the [Stop] button, press the [Power] button.
5. It turns power on and display “CD/USB”, then display “PWR ON” or “PWR OFF”.
CHANGE-OVER THE AM TUNING INTERVAL
The AM tuning interval can be changed over 9 kHz or 10 kHz.
Procedure:
1. Press the [Power] button to turn the power on.
2. Press the [FUNCTION] button to select TUNER AM function.
3. Press the [Power] button again to turn the power off (clock mode).
4. After pressing the [DISPLAY] button on the remote commander, while pressing the [TUNING + >>  >>||] button, press the [Power] button.
5. It turns power on and display “9k STEP” or “10k STEP”, and thus the tuning interval is changed over.
CD SHIP MODE
This mode can run the CD sled motor optionally. Use this mode, for instance, when cleaning the optical pick-up.
Procedure:
1. Press the [Power] button to turn the power on.
2. Confirm there is no disc in tray.
3. Press the [FUNCTION] button to select CD function.
4. Press two buttons of [Stop] and [Power] simultaneously.
5. Set to the CD ship mode (chucking on).
6. After blink “STANDBY”, “CHILD LOCK ON” is displayed, disconnect the AC plug.
CD SHIP AND COLD RESET
Procedure:
1. Press the [Power] button to turn the power on.
2. Confirm there is no disc in tray.
3. Press the [FUNCTION] button to select CD function.
4. Press three buttons of [ENTER], [TUNING– ||<<  <<] and [Power] simultaneously.
5. After blink “STANDBY”, “RESET” is displayed, disconnect the AC plug.
HCD-EX66 is the amplifier, USB, CD player and tuner section in MHC-EX66.
HCD-EX88 is the amplifier, USB, CD player and tuner section in MHC-EX88.
HCD-EX99 is the amplifier, USB, CD player and tuner section in MHC-EX99

Tuesday, 9 May 2017

LGP32F-12P Power Supply Unit - EAY62770401 schematic – LCD TV

Power Factor
Over than 0.4 at 90 – 264Vac & max load condition
On Condition : In a moment of Power_ON Signal activated, the current of 3.5V output should be limited within 40mA(Max) at LCD TV condition for stability
Do not turn “Power_ON” Signal on at the load condition of 3.5V output, more than 40mA
Total regulation for each output circuit includes the results of input voltage variation,load variation, warm-up drift and temperature change.
 The following instruments shall be used for measuring ripple noise.
1. Probe having impedance ratio of 1:1.
2. Oscilloscope having frequency characteristic of 100MHz or more.
Ripple and noise are measured at the end of output cable which are added a 0.1uF ceramic capacitor and 47uF electrolytic capacitor. ( connected parallel )
 On Condition: In a moment of Power ON Signal activated, the current of 3.5V output should be limited within 40mA (Max) at LCD TV condition for stability.
Do not turn “Power ON” Signal on at the load condition of 3.5V output, more than 40mA.
 Power turn on system (Only E/Load condition)
If Main Board is opened, that is electrical load condition, drive on signal must be turn on after about 1.5s behind power on signal.
Short circuit protection between different output terminals is not considered.
 Trip point for over voltage indicates the operating point when the output voltage slowly increases.
 The conditions of Over Current measurement
Multi output(3.5V,12V,24V) is nominal load state except an over current measurement.
Schematic
Connector voltages