Tuesday, November 17, 2015

PIONEER VSX-LX53 - VSX-2020-K AV RECEIVER SERVICE MODE AND POWER AMPLIFIER CIRCUIT DIAGRAM

DOLBY TRUE HD AND DTS MASTER AUDIO

AV RECEIVER

PIONEER VSX-LX53 - VSX-2020-K

SERVICE MODE AND POWER AMPLIFIER CIRCUIT DIAGRAM 

SERVICE MODE
TEST MODE
Purpose
The numbers of detections for various protection processes are displayed.
How to enter/exit
During Standby mode, simultaneously press and hold “MULTI-ZONE ON/OFF” and “ENTER” keys for 5 seconds to enter this mode.
Turn off the power to this unit by setting the main volume level to “--dB” and Multi-zone to “OFF”.
NAVIGATION KEYS
Front Panel Key
DOWN : TUNE Key
UP : TUNE Key
LEFT : PRESET Key
RIGHT : PRESET Key
HOW TO SAVE AND LOAD THE SETTINGS USING BACKUP FUNCTION WITH USB MEMORY
Introduction
This model is capable of saving the set values stored in the MAIN Ucom of DIGITAL MAIN
ASSY in the USB and loading them in a new DIGITAL MAIN ASSY.
(Note that MAIN Ucom should normally operate to enable this function.)
When replacing DIGITAL MAIN ASSY, execute the above mentioned processes.
Contents to save
Last memory for turning ON/OFF the Main power and power supply for ZONE2 and ZONE3
Last memory for inputting the Main power, ZONE2 and ZONE3
Setting for controlling HDMI
Remote control ID
Setting for RF remote control (EXPANSION Setup)
Setting for Network Standby
Data to be save upon the operation of protection circuit
Requirements for USB memory
USB memory to be used should meet the following requirements.
#
Compatible with USB Mass storage Class
#
With a file system of FAT(FAT32)
File saving format
Files are to be saved in the following format: Model number_backup version.extension(avr)
Example: VSX-LX53_BK01.avr
How to save in the USB memory from AV amplifier
1. Insert the usable USB memory into the USB terminal when the main device is off.
2. Enter the SERVICE MODE and select [USB BAK < HOLD >] with UP AND DOWN keys.
3. Select [USB BAK < SAVE >
] with LEFT/RIGHT keys and press [ENTER].
4. Saving in the USB starts and the main device automatically goes off after the normal completion ([COMPLETE] is displayed.).
5. Remove the USB and saving is finished.
*1. If the following errors occur after "SAVE" is executed, error message will be displayed and "SAVE" will be stopped and the power will be turned off.
#
Ejecting of USB device
#
Short capacity of USB device
#
Error during writing in the USB device (Re ad Only or defective Sector, etc.)
*2. If the same file name exists in the USB, overwriting will be automatically executed.
How to write into AV amplifier from the USB memory
1. Insert the USB with the saved file into the USB terminal when the main device is off.
2. Enter the TEST MODE and select [USB BAK < HOLD >] with UP/DOWN keys.
3. Select [USB BAK< LOAD >] with RIGHT/LEFT keys and press [ENTER].
4. Saving in the main device starts and it automatically goes off after the normal completion ([COMPLETE] is displayed.).
5. Remove the USB and loading is finished.
* If the following errors occur after "LOAD" is executed, error message will be displayed and "LOAD" will be stopped and the power will be turned off.
#
No setting file
#
Mismatching between the setting file and the specification of the A/V RECEIVER type to be loaded back
# Error due to Checksum, Signature Check, and Size Check
#
Ejecting of USB device (during reading of the setting file)
Precautions
#
Files are stored in Root of USB memory.
#
Files are read from Root of USB memory.
# To make operations such as moving files, be sure to assign the saved file in Root of the USB memory. Also please be careful not to assign *.avr in multiple numbers.
#
The time and date of updating for saved file is fixed to "2010/01/01 0:00."
#
In principle, please implement Load without making of factory default settings.
To Load from factory default settings status, please take caution on the following points;
Please be sure to check the HDMI control setting for the user before performing of factory default settings. Since the HDMI control setting of default settings is ON, turn OFF the HDMI control setting and Load after performing of factory default settings if the checked user setting is OFF.
(If Load is executed with the setting ON, the assignment information for each HDMI input will be cleared.)
Procedures for turning OFF the HDMI control setting
>
HOME MENU > System Setup > Other Setup > 4e1.HDMI Setup > Control OFF
HOW TO UPDATE FIRMWARE
Enter the UPDATE PANEL mode.
Check a current version.
Check an updated version.
Turn the power off.
(Release the UPDATE PANEL mode.)
Update it.
Update completed.
(Turn the power OFF automatically.)
Enter the UPDATE PANEL mode again.
MAIN com (EMMA), SUB com (EVENT) and DSP Flash ROM Update by USB Memory and the Confirmation of the Version
Preparations
UPDATE PANEL Mode (Version update)
1. Copy the UPDATE FILE to the root directory of the USB Memory.
Note: NEVER copy several UPDATE FILES to the root directory of the USB Memory.
Copy only the corresponding UPDATE FILE.
2. Turn off the power to this unit by setting Multi-Zone to "OFF".
3. Connect the USB Memory to the USB terminal (A type) of the front panel.
Procedure
1. While holding down "TUNE?" key on the front panel, press "STANDBY ON/OFF" key and moves to the UPDATE PANEL mode.
2. The updating process is as follows.
POWER AMPLIFIER CIRCUIT 
PRE STAGE 
POWER STAGE 
POWER OUTPUT STAGE 
CLICK ON THE IMAGES TO ZOOM IN