REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

How to use the site:
- If you landed here via any Search Engine, you will get what you searched for and you can search more using the search this blog feature provided by Google. You can visit more posts scrolling the left blog archive of all posts of the month/year,
or you can click on the main photo-page to start from the main page. Doing so it starts from the most recent post to the older post simple clicking on the Older Post button on the bottom of each page after reading , post after post.

You can even visit all posts, time to time, when reaching the bottom end of each page and click on the Older Post button.

- If you arrived here at the main page via bookmark you can visit all the site scrolling the left blog archive of all posts of the month/year pointing were you want , or more simple You can even visit all blog posts, from newer to older, clicking at the end of each bottom page on the Older Post button.
So you can see all the blog/site content surfing all pages in it.

- The search this blog feature provided by Google is a real search engine. If you're pointing particular things it will search IT for you; or you can place a brand name in the search query at your choice and visit all results page by page. It's useful since the content of the site is very large.

Note that if you don't find what you searched for, try it after a period of time; the site is a never ending job !

..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Tuesday, 5 March 2019

ONKYO TX-RZ900 AV RECEIVER - FACTORY RESET PROCEDURE - SELF DIAGNOSIS - FIRMWARE CHECKING AND UPDATING PROCEDURE - TROUBLESHOOTING - AV RECEIVER REPAIR AND SERVICE

ONKYO TX-RZ900 AV Receiver - Factory reset procedure - Self diagnosis - Firmware checking and updating procedure - Troubleshooting - AV receiver Repair and service

                                                 Category: AV Receiver Repair and Service 

Contents of this article 
  • Factory Resetting Procedure
  • Firmware updating Procedure
  • Troubleshooting    

ONKYO TX-RZ900

Resetting the Unit
# How to reset:
Step:1
While holding down CBL/SAT on the main unit (note that step 2 must be performed with this button pressed down)
Step:2
Press ON/STANDBY on the main unit. ("Clear" appears on the display and the unit returns to standby.)
# Do not unplug the power cord until "Clear" disappears from the display.
# How to reset the remote controller:
Step:1
While holding down RECEIVER on the remote controller, press Q until the remote indicator stays lit (about 3 seconds).
Step:2
Within 30 seconds, press RECEIVER again.
Self-diagnostics
This function is For avoiding the rupture of electrolytic capacitors with amplifier circuit failure during power-ON.
Operation of Self diagnostic
Self-diagnostic will start at the timing of next power on, after goes to the protect mode by Current detection or DC voltage detection.
Only On/Standby key could work in this mode. Also remote control does not work.
However, the CLEAR operation is enabled.
During Self-diagnostic, the power supply for amplifier circuit become low voltage state(SEC1-LOW), and the speaker relay will be turned off. Then, MPU will check each amplifier circuits internally by entering the test signal (20 kHz,-20 dBFS sine wave) to each channel from DSP.
MPU will judge the amplifier circuit is good or not from VOLH value.
The normal range of VOLH value is 0.04 V < VOLH < 0.20 V.
If VOLH value is in the out of this range, it will be judged as NG (No good).
No problem found
When protected by current detection, and no problem found, "CHECK SP WIRE“ will be displayed in this State, Only the On/Standby key is effective. And it do not anything for 3 minutes, unit goes into stand by automatically.
When protected by a DC voltage detection, and no problem found, unit goes into normal operation.
Problem found
When judged as there is a problem on any channel, the information of channel that has a problem will be displayed. In this State, Only the On/Standby key is effective. Also remote control does not work. if do not anything for 3 minutes, unit goes into standby automatically. This state will keep also after unit turn on/off, or AC unplugged.
The power supply for the amplifier becomes low voltage state and the speaker relay will be turned on.
Repair Process and How to Confirm
Confirmation of the protect cause
While NG channel is displayed, You can confirm the protect cause by following the step below
1. Press the Enter button
2. The protection causes are displayed for 5 seconds.
Please check the around of those amplifier circuit and repair it.
Clear of NG CH information
After repair, you can clear NG CH information by following the steps below.
1. Press the On!Standby key while pressing the Enter key.
2. Display as in the right figure appears.
3. Unit goes into Standby automatically after 5 seconds.
Self-diagnostic will start again at the timing of next power on.
By this, You can verify whether repair was properly or not.
If problem found after repair, please re-check the around of its circuit.
Cancel of Self-diagnostic
You can cancel this mode by clear operation (press Standby key while pressing CBL/SAT key)
After cancel this mode, receiver will be started as normal operation.
How to check Firmware Version & Preparation of Update
Step1 : [DISPLAY] + [ON/STANDBY] x 2
Main Firmware Version will appear on the main unit’s display.
Step2 : [TONE +]
NET Firmware Version will appear on the main unit’s display.
Step3 : [TONE +]
DSP Firmware Version will appear on the main unit's display.
Step4 : [TONE +]
VIDEO Firmware Version will appear on the main unit’s display.
Step5 : [TONE +]
OSD Firmware Version will appear on the main unit’s display.
Step6 : [TONE +]
V8100 Firmware Version will appear on the main unit’s display ( DTR-40.7 only)
Preparation of Update
How to update (service mode)
Overwriting is also possible.
1.Turn on the unit. It takes some time to start after you switch on the unit.
2.Select the USB input source.
3.Connect the USB storage device to USB port on the unit. Wait until Initializing of USBINET finishes.
4.Hold down [DISPLAY] button and then press [ONISTANDBY] button twice.
Main version will be displayed, and HYBRID STANDBY indicator will start to flash.
5.Press [RETURN] button. “NET -> ALL_D" will be displayed.
6.Select "USB -> ALL_D" by [PRESET(left/right)] cursors and [TUNING(up/down)] cursors, then press [ENTER] button, updating will begin.
7.Wait until update is completed. When the update ends, "Completed!" is displayed (if you leave it, it automatically turns standby mode. )
8.Press [ON/STANDBY] button, and the unit turns on.
9.Check the new FW version number.
Note:If the procedure might not be successful, please select "USB -> ALL_M”.
TROUBLESHOOTING
No Sound
No sound from connected player
# Chose input selector which is assigned to connected input terminal ?
# Isn't muting on ?
No sound from connected TV
# Chose wrong input selector ?
# Connect to this model's HDMI OUT terminal from TV by HDMI cable ?
# When TV supports ARC function, connect to his model's HDMI OUT terminal from TV's HDMI input terminal for ARC function ?
# When TV doesn't support ARC function, connect TV to this model with optical cable etc. ?
# Isn't muting on ?
No sound from some connected loudspeaker(s)
# No sound loudspeaker(s) config is enabled ?
No sound from all connected TV or Bluray player etc.
# After chose loudspeaker volume level setting, test tone is OK ?
No problem about above items
# Unplug power cord
After 10 seconds, connect power cord again.
# Execute Reset 
NO Picture
In general
# Connection cable is bent , twisted or damaged ?
# Input is switched on TV ?
No picture from connected player by HDMI input terminal
# Chose input selector which is connected to player ?
# Listening mode is not Pure Audio ?
# Don't use HDMI-DVI adaptor. From personal computer ?
No picture from connected player by component video terminal
# Output to TV connected to component video out terminal from player's picture connected to the composite video input terminals ?
No problem about above items
# Unplug power cord
After 10 seconds connect the power cord again
# Execute Reset 
No Power
In general
# Doesn't be connection cable bent, be it twisted and be it damaged?
There is time when indication on the front panel doesn't just light up.
# Please check the connecting cord of a DISPLAY PCB.
No problem about above items
# Unplug power cord
After 10 seconds, connect power cord again
# Execute Reset
Posted By: FRANK at 05:04
TAG: , , , ,