Harman Kardon CDR25, CDR26 Dual Tray CD-R-CD-RW Recorder-Player – error message details, troubleshooting, schematic

 

TROUBLESHOOTING AND ERROR MESSAGES

* Unit does not operate when Standby switch • No AC power • Make certain AC power cord is plugged into a live outlet or remote Power-On is pressed • Check to see whether AC outlet is switch-controller.

• Main Power Switch is off • Turn on Main Power

Remote does not function • Wrong deck selected • Press the CDP Button  to control the Play Deck ; press the CDR Button  to control the Record Deck.

• Dead batteries • Replace both batteries

• Sensor blocked • Remove obstructions from front panel or connect a remote sensor to the Remote-In Jack.

Disc does not erase • CD-R disc in use • CD-R discs do not erase; only CD-RW discs may be erased.

Recorded CD-R disc does not play in another CD player or DISC ERROR message appears in play deck,  • CD-R disc not finalized.  • Finalize the CD-R disc in the CDR 26’s record deck.

Recording suddenly stops • Input source stopped or paused.  • Recordings will stop when the input source is paused for more than three seconds for digital recordings and 10 seconds for analogue recordings.

ERROR MESSAGES

CHECK DISC.  • A record-related button has been pressed when a finalized disc is in the Record Deck.  • A record-related button has been pressed when a standard CD is in the Record Deck. • Un-finalize the disc to add tracks to a CD-RW disc.  • Replace the disc with a blank CD-R or CD-RW disc.  • Replace the disc with a blank CD-R or CD-RW disc.

DATA DISC  • A non-audio CD-ROM or a CD Video disc has been placed in the machine.  • Only CD Audio and DTS® discs will play in the CDR 26;  replace the disc.

DISC ERROR • An un-finalized disc has been placed in the Play Deck.  • A DVD has been placed in the unit. • Finalize the disc. • Replace the disc; the CDR 26 does not play or dub DVDs.

DISC FULL • There are only four seconds of record time remaining on the disc being recorded.  • Use another blank CD-R or CD-RW disc.  • Erase one or more tracks on a CD-RW disc.

ERROR • The disc is not seated properly. • There is a problem with the disc.  • Open the drawer and check to see that the disc is properly seated.  • Try another disc.

FAILED • A dub has not been completed properly. • Check the play disc,  • Repeat the dub process.

NO AUDIO • A record-related button has been pressed when a non-audio disc is in the Record Deck.  • Replace the disc with a blank CD-R or CD-RW Audio disc,

SVC-1  • There is an internal problem with the CDR 26.  • Contact an authorized Harman Kardon service center.

.Overall wiring diagram

POWER CIRCUIT DIAGRAM

CD-P schematic

CD-RW CIRCUIT DIAGRAM

CD-R RF CIRCUIT DIAGRAM

CD-R, µ-COM/DSP CIRCUIT DIAGRAM

I/O CIRCUIT DIAGRAM

FRONT CIRCUIT DIAGRAM

Sony HCD-DX375 SUPER AUDIO CD-DVD RECEIVER (US Model)-Test mode, take out the disc at emergency, self diagnosis, adjustment details, power and amplifier board schematic

 

HCD-DX375 is the amplifier, DVD/CD and tuner section in DAV-DX375.

Model Name Using Similar Mechanism:  HCD-DX255

Mechanism Type:  CDM81C-DVBU101

Optical Pick-up Name:  KHM-310CAB

AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL HARMONIC DISTORTION
(FTC Output Power): FL/FR/SL/SR/C: 84 W/ch 3 ohm at 170 - 20,000 Hz, 0.7 % THD
SW: 160 W 1.5 ohm at 40 - 170 Hz, 0.7 % THD

Amplifier section
Surround mode (reference) RMS output power, 10 % THD
Front: 143 W + 143 W (with SS-TS52)
Centre*: 143 W (with SS-CT51)
Surround*: 143 W + 143 W (with SS-TS51)
Subwoofer*: 285 W (with SS-WS52B)

LASER DIODE EMISSION CHECK

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

LASER DIODE AND FOCUS SEARCH
1. Open the cover and turn POWER on with no disc inserted.
2. Confirm that the following operation is performed while observing the objecting lens.
1) Confirm that laser beam is spread.
2) Up and down motion of the objective lens. (3 times)

DISC TRAY LOCK
The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.

Press the POWER button to turn the set on.
2. Press the [FUNCTION] button to set DVD function.
3. Insert a disc.
4. Press the STOP button and the EJECT button simultaneously for five seconds.
5. The message “LOCKED” is displayed and the tray is locked.

Releasing Procedure:
1. Press the STOP button and the EJECT button simultaneously for five seconds again.
2. The message “UNLOCKED” is displayed and the tray is unlocked.
Note 1: When “LOCKED” is displayed, the tray lock is not released by turning power on/off with the POWER button.
Note 2: Incorrect operations may be performed if the test mode is not entered properly.
In this case, press the POWER button to turn the power off, and retry to enter the test mode.
Note 3: If the disc tray does not open and the message “LOCKED” appears, press the STOP button and the EJECT button simultaneously for seconds or longer.
Then remove your fingers from the above stick and the button.
The message “UNLOCKED” appears for 2 seconds and the disc tray opens.

DMB12 board replacement
New part of EEP ROM (IC103, IC706) on the DMB12 board cannot be used. Therefore, if the mounted DMB12 board (A-1148-813-A) is replaced, exchange new EEP ROM (IC103, IC706) with that used before the replacement.

Self-diagnosis Function

(When letters/numbers appear in the display)

When the self-diagnosis function is activated to prevent the system from malfunctioning, a 5- character service number (e.g., C 13 50) with a combination of a letter and 4 digits appears on the screen and the front panel display. In this case, check the following table.

First 3 characters of the service number.     Cause and/or corrective action
C 13 The disc is dirty.                           ,               Clean the disc with a soft cloth
C 31 The disc is not inserted correctly.  ,          Restart the system, then re-insert the disc correctly.
E XX (xx is a number)  To prevent a malfunction, the system has performed the self-diagnosis function.  Contact your nearest Sony dealer or local authorized Sony service facility and give the 5- character service number.
Example: E 61

When displaying the version number on the screen.
When you turn on the system, the version number [VER.X.XX] (X is a number) may appear on the screen. Although this is not a malfunction and for Sony service use only, normal system operation will not be possible. Turn off the system, and then turn on the system again to operate.

HOW TO OPEN THE DISC TABLE WHEN POWER SWITCH TURNS OFF. (During a power failure or at emergency)

Discharge the charged electricity in capacitors to prevent electric shock as follows

When disassembling the machine, be sure to discharge the charged electricity in the following capacitors. Use a resistor of 800 ohms, 2 Watts for discharging the following capacitors.

PRECAUTION WHEN INSTALLING A NEW OP UNIT / PRECAUTION BEFORE UNSOLDERING THE STATIC ELECTRICITY PREVENTION SOLDER BRIDGE

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.)

Test mode

Regarding the notification symbol “R”
Because the number of the operating buttons of this product are limited, some operations require use of the operating buttons of the remote commander, When a specific operation requires use of the operating buttons of the remote commander, “R” is added to the specific operating procedure in this manual. Example MENU/NO “R” The MENU/NO button of remote commander.  Incorrect operations may be performed if the test mode is not entered properly.  In this case, press the POWER1 button to turn the power off, and
retry to enter the test mode.

Cold Reset
The cold reset clears all data including preset data stored in the RAM to initial conditions. Execute this mode when returning the set to the customers.
Procedure:
1. Press the POWER button to turn the power on.
2. Press three buttons STOP, EJECT and POWER simultaneously.
3. When this button is operated, display as “COLD RESET” for
a while and all of the settings are reset.

Panel Test Mode
This mode is used to check the software version, FL, LED and KEY

Display Test Mode
Procedure:
1. Press the PWER button to turn the power on.
2. Press three buttons PAUSE , FAST REWIND and EJECT simultaneously.
3. When the display test mode is activated, all segments and LEDs
are turned on.
4. To exit from this mode, press three buttons PAUSE , FAST REWIND and EJECT simultaneously.

Version Test Mode
Procedure:
1. When the panel test mode is activated, press the FAST REWIND button and the message “DCX3FD” is displayed, the version test mode is activated.
2. Whenever press the FAST REWIND button, the version is displayed in order of NA, MC, SYS, UI, DVD, CDMA, CDMB, ST, TA, DSP and TM.
3. Press the FAST FORWARD button and the date of the software production is displayed.
4. Press the FAST FORWARD button again and the version is displayed.
5. To exit from this mode, press three buttons PAUSE , FAST REWIND and EJECT simultaneously.

Key Test Mode
Procedure:
1. When the panel test mode is activated, press the PLAY button, to select the key test mode.
2. To enter the KEY test mode, the fluorescent indicator displays “K0 V0”. Each time a button is pressed, “KEY” value increases. However, once a button is pressed, it is no longer taken into account. When all keys are pressed correctly, “K13 V0” is displayed.
3. When the VOLUME control is turned in the direction of (+), “V0” is changed to “V1”, then ... “V9”.
When the VOLUME control is turned in the direction of (–), “V0” is changed to “V9”, then ... “V1”.
4. To exit from this mode, press three buttons PAUDE , FAST REWIND and EJECT simultaneously.

Disc Tray Lock
The disc tray lock function for the antitheft of an demonstration disc in the store is equipped.
Setting Procedure :
1. Press the POWER button to turn the set on.
2. Press the FUNCTION button to set DVD function.
3. Insert a disc.
4. Press the STOP button and the EJECT button simultaneously for five seconds.
5. The message “LOCKED” is displayed and the tray is locked.
Releasing Procedure :
1. Press the STOP button and the EJECT button simultaneously for five seconds. again.
2. The message “UNLOCKED” is displayed and the tray is unlocked.
Note: When “LOCKED” is displayed, the slot lock is not released by turning power on/off with the POWER button.

DVD Ship Mode
Use this mode when returning the set to the customer after repair.
Procedure:
1. Press the POWER button to turn the set on.
2. Press the FUNCTION button to set the function “DVD”.
3. Remove all discs, press two buttons STOP , and FAST REWIND simultaneously.
4. After a message “MECHA LOCK” is displayed on the fluorescent indicator tube, pull out the AC plug.
5. To exit from this mode, press the POWER button to turn the set on.

AM Step Change
A step of AM channels can be changed over between 9 kHz and 10 kHz.
Procedure:
1. Press the POWER button to turn the set ON.
2. Select the function “TUNER”, and press FUNCTION button to select the BAND “AM”.
3. Press the POWER button to turn the set OFF.
4. Press two buttons FAST FORWARD and POWER simultaneously, and the display of fluorescent indicator tube changes to “AM 9 k STEP” or “AM 10 k STEP”, and thus the channel step is changed over.

Volume Test Mode
Procedure:
1. Press the POWER button to turn the power on.
2. Press three buttons FAST REWIND,  PLAY and FAST FORWARD simultaneously.
3. The message “VOLUME MAX” is displayed, when the
VOLUME control is turned in the direction of (+).
The message “VOLUME MIN” is displayed, when the VOLUME control is turned in the direction of (–).
4. To exit from this mode, press the POWER button to turn the set off.

Product out
This mode moves the optical pick-up to the position durable to vibration and clears all data including preset data stored in the RAM to initial conditions. Use this mode when returning the set to the customer after repair.

Press the POWER button to turn the power on.
2. Press the FUNCTION button to set the function “DVD”.
3. Remove all discs, and then press three buttons FAST FORWARD , EJECT and POWER simultaneously.
4. After the “STANDBY” blinking display finishes, the message “MECHA LOCK” is displayed on the fluorescent indicator tube disconnect the AC power plug, then the ship mode is set.

TEST DISC LIST
Be sure to use the DVD disc that matches the signal standards of your region.
• CD YEDS-18 (Part No.: 3-702-101-01) PATD-012 (Part No.: 4-225-203-01)
• DVD SL (Single Layer): NTSC : HLX-503 (Part No.: J-6090-069-A).  HLX-504 (Part No.: J-6090-088-A),  PAL : HLX-506 (Part No.: J-6090-077-A)
• DVD DL (Dual Layer): NTSC : HLX-501 (Part No.: J-6090-071-A).  HLX-505 (Part No.: J-6090-089-A).  PAL : HLX-507 (Part No.: J-6090-078-A)

GENERAL DESCRIPTION

The Mirror Time and IOP measurement allows you to make diagnosis and adjustment simply by using the remote commander and monitor TV. The instructions, diagnosis results, etc. are given on the on-screen display (OSD).
Be sure to execute the Mirror Time and IOP measurement when a BU (Base Unit) is replaced.

HOW TO ENTER TEST MODE
While pressing the STOP and EJECT buttons simultaneously, turn VOLUME + with the DVD player in power on.
The Test Mode starts, then the menu shown below will be displayed on the TV screen.

The menu above is the Remocon Diagnosis Menu screen which consists of six main function. At the bottom of the menu screen, the model name and IF-con version. To enter Mirror Time Adjustment menu, press button 2 “R” on the remote commander to enter Drive Manual Operation menu. To exit from the Test Mode, press the power button on the remote commander.

DRIVE MANUAL OPERATION
The Drive Manual Operation menu consists of five main functions.
By pressing 2 “R” button on the remote commander in the Remocon Diagnosis Menu, the screen will appear as below.

MIRROR TIME ADJUSTMENT
To enter Mirror Time Adjustment, press 5 “R” button on the remote commander. The screen will appear as below.  There are five main commands in the Mirror time Adjust menu.

CD MIRR time Check
This command checks the Mirror time value for CD disc.
2. DVD MIRR time Check
This command checks the Mirror time value for DVD disc.
3. Threshold
This command displays the threshold value between CD and DVD mirror time.
4. Save to EEPROM
This command saves an adjusted mirror time value to the EEPROM.
5. Default set MIRR time
This command will set CD and DVD mirror time to firmware default value.

 [Open] / [Close]
Pressing the EJECT button controls the tray for disc change during mirror time adjustment.
[0] Return to previous menu
Press the 0 “R” button to return to previous menu.

EXECUTING MIRROR TIME ADJUSTMENT
In order to execute mirror time adjustment, the following standard procedures must be followed.
(1) In power on, while pressing the STOP and EJECT buttons simultaneously, turn VOLUME + .
(2) Select “2. Drive Manual Operation”

POWER BOARD PWB AND SCHEMATIC

POWER AMPLIFIER SCHEMATIC

How to repair Sharp Aquos LC-70LE632U LC-70LE732U dead, DPS-222BP power has no standby

 

SHARP RUNTKA857WJQZ, SHARP PN-702, SHARP LC70EG32U, SHARP LC 70LE632U DPS 222BP SMPS REPAIR PROCEDURE – SCHEMATIC DIAGRAM

Schematic diagram

SHARP 21V FS 700S COLOUR TELEVISION – how to enter the service mode, circuit diagram

 

Always respect voltages. While some may not be dangerous in themselves, they can cause unexpected reactions that are best avoided. Before reaching into a powered TV set, it is best to test the high voltage insulation. It is easy to do, and is a good service precaution.  It makes sense to avoid exposure to electrical shock.  While some sources are expected to have a possible dangerous impact, others of quite high potential are of limited current and are sometimes held in less regard.

When servicing the high voltage system, remove static charge from it by connecting a 10K ohm resistor in series with an insulated wire (such as a test probe) between picture tube dag and 2nd anode lead. (AC line cord should be disconnected from AC outlet.)
1) Picture tube in this receiver employs integral implosion protection.
2) Replace with the same type number of picture tube for continued safety.
3) Do not lift picture tube by the neck.
4) Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage completely.

Service mode entry method

Press and hold the local key “vol down” and  “channel up” when power on the main switch, TV will enter into the service mode in adjustment mode. (the initial value of the EEPROM are automatically preset when the new EEPROM is used).  Service mode also can be reached by pressing the service key (code: 40Hex)

Press the channel up or dn key on the remote controller to select the items one by one in adjustment mode.

Using the volume up or down key on the remote controller, the data can be modified.

When press the local key “Vol Down and Channel Up” at the same time, it will be released from the service mode.

Press the  Menu key on the remote control to enter into the NVM mode.  Press menu key again to leave the NVM mode return to adjustment mode.  (it is not recommended to modify the data unless as listed in BUS SETUP data)

Press both channel up and volume down buttons on the TV set simultaneously or press the “service”(40HEX) key again, it will switch to the normal mode position, and the microprocessor is out of service mode.

Default locking password “0000”

Factory presetting

Press remote controller key of code “ED” for  4 seconds, the initial values are automatically preset.

Make sure whether the data need to modify or not (initial data)

If haven’t done this initialization, malfunction might happen.

Below are the adjustment items that should be done, otherwise some adjustment items will not be accurate.

Schematic diagram and PWB

PDI COLOR TFT-LCD TV PDI-P23LCD – how to enter the service mode, disassemble procedure, white balance checking, schematic diagram

 

Adjustment instruction with default factory data

When the EEPROM has been replaced, the SVC data should be restored as the function of individual system and specification.
When the EEPROM has been replaced White Balance Checking.
To Enter and exit SVC mode
Note: into the SVC mode, Initialize with default data.
1) Press 5 Seconds MENU buttons on both TV set and Remote Controller at the same time to get into SVC mode.
2) Press the PR ▲▼ button several times to find SVC Data.
3) Input the corresponding SVC data referring to Table below with the VOL ◀▶ , key.
4) Press TV/AV button to exit SVC mode.

White balance checking

Disassemble procedure

Schematic diagram

Philips 40PFT6709, LG715G7801 - Circuit Diagram and PWB Layout - A 715G6555 PSU

 

Ambilight will adjust the TV lights around according to the picture changing color and brightness in order to create a sense of the effect of being personally on the screen

Power Supply Unit

All power supplies are a black box for Service. When defective, a new panel must be ordered and the defective one must be returned, unless the main fuse of the panel is broken. Always replace a defective fuse with one with the correct specifications! This part is available in the regular market.
Important delta’s with the TPM14.2A LA classis platform are:
• New power architecture for LED backlight
• “Boost”-signal is now a PWM-signal + continuous variable.
The control signals are:
• Stand-by
• Lamp “on/off”
• DIM (PWM) (not for PSDL)
No detailed information is available because of design protection issues.
The output voltages to the chassis are:
• +4V7-STANDBY (Stand-by mode only)
• +5V (Stand-by mode only) (for 65PUT8609)
• +12V (on-mode)
• +Vsnd (+12V) (audio power) (on-mode)
• +24V (bolt-on power) (on-mode).

DC/DC Converters
The on-board DC/DC converters deliver the following voltages (depending on set execution):
• +5V-STANDBY, permanent voltage for the Stand-by controller, LED/IR receiver and controls
• +12V, input from the power supply for the panel common (active mode)
• +12V, input from the power supply for audio amplifier
• +1V2, from the power supply for the scaler IC MT5591
• +1V5, supply voltage for DDR2 (diagram B03B)
• +3V3, general supply voltage
• +5V, supply voltage for USB and CAM
• +3V3-TUN, supply voltage for tuner
• +5V-USB, input intermediate supply voltage for USB
• +3V3 from the power supply for the scaler IC MT5591
• +12V input from the Power supply for the Ambilight common.

• Output to the display; in case of
- IPB: High voltage to the LCD panel
- PSL and PSLS (LED-driver outputs)
- PSDL (high frequent) AC-current.
Diversity
The diversity in power supply units is mainly determined by the diversity in displays.
The following displays can be distinguished:
• CCFL/EEFL backlight: power panel is conventional IPB
• LED backlight:
- side-view LED without scanning: PSL power panel
- side-view LED with scanning: PSLS power panel
- direct-view LED without 2D-dimming: PSL power panel
- direct-view LED with 2D-dimming: PSDL power panel.
PSL stands for Power Supply with integrated LED-drivers.
PSLS stands for a Power Supply with integrated LED-drivers
with added Scanning functionality (added microcontroller).
PSDL stands for a Power Supply for Direct-view LED backlight with 2D-dimming.

Circuit Diagram and PWB Layout - A 715G6555 PSU