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.

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..............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 !

Friday 1 March 2019

HCD-SH2000 SONY MINI HI-FI COMPONENT SYSTEM – TEST MODE- CD MECHANISM EXPLODED VIEW

HCD-SH2000 Sony MINI HI-FI COMPONENT SYSTEM – Test Mode- CD mechanism Exploded view

HCD-SH2000 is the tuner, USB, CD and amplifier section in FST-SH2000/LBT-SH2000.  CD Mechanism Type: CDM86B-DVBU101.  Optical Pick-up Name: KHM-313CAB/C2NP
Amplifier section: The following are measured at AC 120 V - 240 V, 50/60 Hz Power output (rated) High channel - 300 W + 300 W (at 4 Ω, 1 kHz, 1% THD) Low channel - 300 W + 300 W (at 4 Ω, 100 Hz, 1% THD) RMS output power (reference) High channel - 500 W + 500 W (per channel at 4 Ω, 1 kHz) Low channel - 500 W + 500 W (per channel at 4 Ω, 100 Hz)
FACTORY PRESET
This mode is use to load all the factory use preset frequencies into FM 1-FM 20 and AM 1-AM 10. Originally, frequency of FM 1-FM 20 and AM 1-AM10 are set to the minimum frequency.
Procedure:
1. Press the Power button to turn on the system.
2. Press [SEARCH] button and [TUNER/BAND] button simultaneously and hold for 3 seconds, message “FACTORY” appears on the fluorescent indicator tube. The function is changed to TUNER automatically.
DISC THEFT PREVENTION MODE
This mode let prevent disc to be ejected. When this mode is activated, the disc will not eject when [EJECT] button is pressed.
The message “LOCKED” will be displayed on the fluorescent indicator tube. This mode only applied when there is disc.
Procedure:
1. Press the Power  button to turn on the system.
2. Select CD function.
3. Press [PLAY/PAUSE] button and [EJECT] button simultaneously for 3 seconds. The message “LOCKED” or “UNLOCKED” displayed on the fluorescent indicator tube.
COMMON TEST MODE
This mode is used to check operations of the Amplifier section.
Procedure:
To enter Common Test Mode
1. Press [USB/USB SELECT] button and [PRESET EQ] button simultaneously and hold for 3 seconds.
2. The upper segments of fluorescent indicator tube will blink.  The function is changed to TV and the volume is changed to VOLUME MIN.
Check of Amplifier
1. Press [PRESET EQ] button repeatedly until a message “GEQ MAX” appears on the fluorescent indicator tube. GEQ increases to its maximum.
2. Press [PRESET EQ] button repeatedly until a message “GEQ MIN” appears on the fluorescent indicator tube. GEQ decreases to its minimum.
3. Press [PRESET EQ] button repeatedly until a message “GEQ FLAT” appears on the fluorescent indicator tube. GEQ is set to flat.
4. When the [MASTER VOLUME] knob is turned clockwise even slightly, the sound volume increases to its maximum and a message “VOLUME MAX” appears on the fluorescent indicator tube.
5. When the [MASTER VOLUME] knob is turned counterclockwise even slightly, the sound volume decreases to its minimum and a message “VOLUME MIN” appears on the fluorescent indicator tube.
To release from Common Test mode
1. To release from this mode, press the Power button.
2. The cold reset is enforced at the same time.
PANEL TEST MODE
This mode is used to check the fluorescent indicator tube, LEDs, keys, [MASTER VOLUME] jog, model, destination and software version.
Procedure:
1. Press [SEARCH] button and [OPTIONS] button simultaneously and hold 3 seconds.
2. All LEDs and segments in fluorescent indicator tube will light up.
3. When you want to enter to the software version display mode, press [FLANGER] button. The model information appears on the fluorescent indicator tube. Press [FLANGER] button again to view the destination information.
4. During the destination information display, press [FLANGER] button. Each time [FLANGER] button is pressed, the fluorescent indicator tube shows the version of each category software in the following sequence: SC, MTK (DMB Board firmware version), UI, PF, SYS, CD, CDMA, CDMB, ST, TA, TAS, TM and return back to model information display.
5. When [SEARCH] button is pressed while the version numbers are being displayed except model and destination, the date of the software creation appears. When [SEARCH] button is pressed again, the display returns to the software version display.
6. Press [ISOLATOR] button, the key check mode is activated.
7. In the key check mode, the fluorescent indicator tube displays “K 0 V0”. Each time a button is pressed, “K” value increases.  However, once a button has been pressed, it is no longer taken into account.  “V” value increases in the manner of 0, 1, 2, 3 ... if [MASTER VOLUME] knob is turned clockwise, or it decreases in the manner of 0, 9, 8, 7 ... if [MASTER VOLUME] knob is turned counterclockwise.
8. When [SOUND FLASH] button is pressed after all LEDs and segments in fluorescent indicator tube light up, alternate segments in fluorescent indicator tube and LEDs would light up. If you press [SOUND FLASH] button again, another half of alternate segments in fluorescent indicator tube and LEDs would light up. Pressing [SOUND FLASH] button again would cause all segments in fluorescent indicator tube and LEDs light OFF. Pressing [SOUND FLASH] button again would cause all segments in fluorescent indicator tube and all LEDs light up.
9. To release from this mode, press the [SEARCH] button and [OPTIONS] button in the same manner as step 1, or disconnect the power cord.
COLD RESET
The cold reset clears all data including preset data stored in the EEPROM to initial conditions. Execute this mode when returning the set to the customer.
Procedure:
1. Press the Power button to turn on the system.
2. Press the Stop button and the Power button simultaneously for 3 seconds.
3. “COLD RESET” appears on the fluorescent indicator tube.  After that, the fluorescent indicator tube becomes blank for a while, and the system is reset.
TUNER STEP CHANGE
The step interval of AM channels can be toggled between 9 kHz and 10 kHz. This mode is not available for Saudi Arabian, European and Russian models.
Procedure:
1. Press the Power button to turn on the system.
2. Press [FUNCTION] button repeatedly to select the “AM”.
3. Press the Power button to turn off the system.
4. Press [ENTER] button and Power button simultaneously. The system turns on automatically. The message “AM 9K STEP” or “AM 10K STEP” appears on the fluorescent indicator tube and thus the channel step is changed.
CD SHIP MODE (WITH MEMORY CLEAR)
This mode moves the optical pick-up to the position durable to vibration and clears all data including preset data stored in the data flash to initial conditions during the next AC-In. Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the Power button to turn on the system.
2. Select CD function and without dics inserted.
3. Press [EJECT] button and the Power button simultaneously for 3 seconds. The system turns off automatically.
4. A message “MECHA LOCK” is displayed on the fluorescent indicator tube and the CD ship mode is set.
CD Mechanism - Exploded