Friday, March 04, 2016

MARANTZ SR5005 - AV Surround Receiver – Factory Reset - Micom Version display – Protection modes – Version Upgrade procedure - Amplifier Idle current Adjustment - USB Player Circuit diagram – Using TCC8600 - AV Receiver repair and service

                                               MARANTZ SR5005

Initializing AV RECEIVER
AV SURROUND RECEIVER initialization should be performed when the Micom, peripheral parts of Micom, and Digital P.W.B. are replaced.
1. Turn off the power using ON/STANDBY button.
2. Press ON/STANDBY button while simultaneously pressing SURR.MODE and AUTO buttons.
3. Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and the microprocessor will be initialized.
Micom/DSP version display mode:
When started up, the version information is displayed.
Starting up:
With the "STATUS" and "RETURN" buttons pressed, press the "ON/STANDBY" button to turn the power on.
Now, press the "STATUS" button to the display the 2nd item information on the FL Display.
Display Order
Destination information > Main-Micom version > Main 1st Boot version > Sub-Micom version > Sub 1st Boot Loader Version > DSP version > APLD version > USB version.
Errors checking mode (Displaying the protection history)
Error mode (Displaying the protection history):
When started up, the error information is displayed.
Starting up:
All model commonness
With the "STATUS" and "CURSOR < " buttons pressed, press the "ON/STANDBY" button to turn the power on. The error (protection history display) mode is set.
Now, press the "STATUS" button to turn on the FL display.
About the display on the FL display
When the "STATUS" button is pressed after setting the error (protection history display) mode, a history like the one shown below is displayed, depending on the conditions.
(1) Normally (when there has been no protection incident)
NOPROTECT
2) For ASO (when the last protection incident was ASO protection)
PRT : ASO
Cause: The line between speaker terminals is shorted, or use speakers having impedance less than that specified.
Supplementary information: As the excess current is detected after operation of the speaker relay, the shorted speaker terminal and the connected speaker can be identified.
Turning on the power without correcting the abnormality will cause the protection function to work about 5 seconds later and the power supply will be shut off.
(3) For DC (when the last protection incident was DC protection)
PRT : DC
Cause: DC output of the power amplifier is abnormal.
Turning on the power without correcting the abnormality will cause the protection function to work about 5 seconds later and the power supply will be shut off.
(4) For THERMAL (when the last protection incident was THERMALprotection)
PRT : THERMAL
Cause: The temperature of the heat sink is excessive.
Turning on the power without correcting the abnormality will cause the protection function to work about 5 seconds later and the power supply will be shut off.
# Additional causes of protection can be due to loose connections, associated components, Microprocessor, etc.
When the "STATUS" button is pressed again after the above protection history is displayed, the normal display reappears.
Clearing the protection history
There are two ways to clear the protection history, as described below.
(1) Start up the error (protection display) mode, display the error, then press and hold in the "ENTER" button for 3 seconds.
 THERMALTHE
Press and hold in the "ENTER" button for 3 seconds.
PRT : CLEAR
The above is displayed and the protection history is cleared.
NO PROTECT
(2) Initialize.
# If you want to save a backup, use the method in above.
Warning indication by the POWER LED
If the power is turned off when a protection incident has been detected, the POWER LED (red) flashes as a warning according to the conditions in which the protection incident occurred.
(1) ASO/DC PROTECTION : Flashes in cycles of 0.5 seconds (0.25 seconds lit, 0.25 seconds off)
(2) THERMAL PROTECTION : Flashes in cycles of 2 seconds (1 second lit, 1 second off)
DUAL BACKUP MEMORY
This product has a Dual Backup Memory function. The conventional Backup functions to memorize, in the EEPROM (U3103) in the circuit, a current setting of the moment the main power is turned off so that it can be restored when it is turned ON again. Meanwhile, the DUAL BACKUP MEMORY is capable of memorizing any arbitrary setting that is configured while the product is in operation so as to restore it at any time. When servicing units returned from end-users for repairs, use this function to back up the current setting (e.g. Tuner Preset). This will enable the units to be returned to the users after repairs, with the setting unchanged.
NOTE : If end-users use this function, the data will be overwritten.
The contents of the memory do not disappear even if you initialize this unit.
HOW TO OPERATE
Backup
(1) Configure a setting you would like to save in the MEMORY and hold down the "BAND" and "ENTER" buttons on the Front Panel at the same time for 3 seconds or more.
(2) The FL Display indicates "MEMORY SAVING" while the Backup is being performed.
MEMORY SAVING
(3) The FL Display indicates "COMPLETE" when the Backup is completed.
COMPLETE
Recovery
(1) Hold down the "BAND" and "MENU" buttons at the same time for 3 seconds or more.
(2) The FL Display indicates "MEMORY LOAD" while the Recovery is being performed.
MEMORY LOAD
(3) After the FL Display indicates "COMPLETE", the product goes into Standby mode. When the power is restored, the Recovery is completed.
COMPLETE
The FL Display indicates "NO BACKUP" if the DUAL BACKUP MEMORY has not been activated with no data to be recovered saved in the Memory.
NO BACKP
SERVICE PRECAUTIONS
When the Flash Rom (U3103) on the HDMI PWB is replaced make sure, in order to maintain consistency with the Backup Memory, to clear the DUAL BACKUP MEMORY in thefollowing way :
How to clear the Backup Memory
(1) Hold down the "BAND" and "AUTO" buttons at the same time for 3 seconds or more.
(2) The FL Display indicates "BACKUP CLEAR" while the memory is being cleared.
BACKUP CLEAR
(3) After the FL Display indicates "COMPLETE", the operation is completed.
COMPLETE
VERSION UPGRADE PROCEDURE OF FIRMWARE
1. Preparations before starting the operation
(1) Personal Computer (Installed "DFW_0002_SR5005_(Rev.1.0.6)").
(2) RS-232 cable (9P (Male), Straight).
2. Connection of the AV receiver
(1) Confirm the power on/off switch of the AV receiver is turning off.
(2) Connect the RS-232C cable from PC with the AV receiver.
3. Turn on the AV receiver
Operate the following. Turn on the AV receiver.
(1) Connect the power cable to the AC outlet while simultaneously pushing the "CURSOR < " button and the "RETURN" button of the front panel.
(2) Confirm the power indicator is green and “WRITTING” is displayed in the front panel
4. Run the DFW
Run the "DFW_0002_SR5005_(Rev.1.0.6)" on desktop of PC.
5. Communication check
(1) Click the “Check Comm.” button.
(2) When connection is good, then you can see the “Communication check OK.” message.
(3) If connection is not good, then you can see the “Communication check NG” message.
Please confirm the following
(a) Check the connection of the AV receiver and PC.
(b) Check the operation mode of the AV receiver
(c) Check the selection of the RS-232C port number of PC.
6. Download the firmware
(1) Click the "Load" button.
(2) Download the firmware from the specified download source to PC
7. Complete the firmware updating
(1) Click the “Update” button.
(2) When writing of the firmware is completed, the power of this unit turns on automatically and you can see the “Update completed” message.
(3) If you can’t complete the firmware update, please retry the firmware update from “3. Turn on the AV receiver”.
Notice:
(a) Keep the PC environment
(b) Avoid the communication cable from the electrical noise source.
(e.g. telephone cable, AC line, a fluorescent light)
(c) Don’t remove cable during update.
(d) Don’t turn off the power during update.
(e) Don’t run other PC application during update.
(f) Stop the resident program on PC (Virus checker and System check utilitu, etc)
(g) Stop the screen saver on PC.
(h) Stop the power save ability on PC.
(i) In case of laptop PC, Use the AC adaptor.
Confirming the firmware’s number after upgraded
After completion of the updating operation, the new version number can confirmed by starting up the SR5005 according to the following procedure.
With the following operation, the SR5005 can be set to the Flash ROM Version-Number Confirmation mode. Turn on power switch while simultaneously pressing "STATUS" and "RETURN" buttons on the front panel. Every time the "STATUS" button is pressed, version number of the Model, Main, Sub, … are indicated on the front panel section.
Idling Current Adjustment
Required measurement equipment: DC Voltmeter
1. Preparation
(1) Avoid direct blow from an air conditioner or an electric fan, and adjust the unit at normal room temperature
15 °C >30 °C (59 °F >  86 °F).
(2) Presetting
# POWER (Power source switch) STANDBY
# SPEAKER (Speaker terminal) No load
(Do not connect speaker, dummy resistor, etc.)
2. Adjustment

(1) Remove top cover and set VR401, VR402, VR403, VR404, VR405, VR406, VR407 on 7CH AMP UNIT at fully counterclockwise  position.
(2) Connect DC Voltmeter to test points (FRONT-Lch: TP401, FRONT-Rch: TP402, CENTER ch: TP403, SURROUNDLch: TP404, SURROUND-Rch: TP405, SURROUND-BACK Lch: TP406, SURROUND-BACK Rch: TP407).
(3) Connect power cord to AC Line, and turn power switch "ON".
(4) Presetting.
MASTER VOLUME : "---" counterclockwise (min.)
SPEAKER (Speaker terminal) : No load
(Do not connect speaker, dummy resistor, etc.)
MODE : MCH STEREO
FUNCTION : DVD
(5) Within 2 minutes after the power on, turn VR401 clockwise (x) to adjust the TEST POINT voltage to 8.0 mV ± 0.5 mV DC.
(6) After 10 minutes from the preset above, turn VR401 to set the voltage to 8.0 mV ± 0.5 mV DC.
(7) Adjust the Variable Resistors of other channels in the same way.
USB AUDIO CIRCUIT DIAGRAM 
CLICK ON THE IMAGE TO ZOOM IN