SONY KV32HS – KV42DRC - SERVICE MODE – SELF DIAGNOSIS – HORIZONTAL SCAN and SMPS SCHEMATICS
Self Diagnosis Function _ Service Mode_LED blinking codes _ Horizontal & Main Power Regulator [SMPS] Circuit diagram.
Applicable to Sony Models _ KV-32HS500 RM-Y186
CND SCC-S70A-A / KV-32HV600 RM-Y187
US SCC-S66B-A / KV-34DRC500 RM-Y186
LATIN NORTH SCC-S71A-A / KV-34DRC500 RM-Y186
LATIN SOUTH SCC-S71B-A / KV-34XBR800 RM-Y188
US SCC-S66F-A / KV-34XBR800 RM-Y188
CND SCC-S70D-A / KV-36HS500 RM-Y186
US SCC-S66C-A / KV-36HS500 RM-Y186
CND SCC-S70B-A / KV-36HS500 RM-Y186
HAWAII SCC-S69B-A / KV-36XBR800 RM-Y187
US SCC-S66D-A / KV-36XBR800 RM-Y187
CND SCC-S70C-A / KV-36XBR800 RM-Y187
HAWAII SCC-S69C-A / KV-38DRC500 RM-Y186
LATIN NORTH SCC-S71C-A / KV-38DRC500 RM-Y186
LATIN SOUTH SCC-S71D-A / KV-40XBR800 RM-Y187
US SCC-S66E-A / KV-40XBR800 RM-Y187
CND SCC-S70E-A / KV-40XBR800 RM-Y187
HAWAII SCC-S69A-A / KV-42DRC800 RM-Y187
LATIN NORTH SCC-S71E-A
The units in this manual
contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED
will automatically begin to fl ash. The number of times the LED fl ashes
translates to a probable source of the problem. A definition of the
STANDBY/TIMER LED fl ash indicators is listed in the instruction manual for the
user’s knowledge and reference. If an error symptom cannot be reproduced, the
Remote Commander can be used to review the failure occurrence data stored in
memory to reveal past problems and how often these problems occur.
When an error occurs, the
STANDBY/TIMER LED will flash a set number of times to indicate the possible
cause of the problem. If there is more than one error, the LED will identify
the first of the problem areas. Results
for all of the following diagnostic items are displayed on screen. If the
screen displays a “0”, an error has occurred.
* If a +B over-current is
detected, stoppage of the vertical deflection is detected simultaneously. The
symptom that is diagnosed first by the micro-controller is displayed on the
screen.
** Check the screen (G2) voltage for abnormality in this case.
*** If STANDBY/STEREO LED flashes six (6) times, unplug the unit and wait 10 seconds before performing the adjustment.
*** If STANDBY/STEREO LED flashes six (6) times, unplug the unit and wait 10 seconds before performing the adjustment.
Stopping
the Standby/Timer LED Flash
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.
Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.
Self-Diagnostic
Screen Display
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession.
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession.
DISPLAY > Channel [5]
> Sound volume (--) > Power ON.
Handling
of Self-Diagnostic Screen Display
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”. Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
Since the diagnostic results displayed on the screen are not automatically cleared, always check the self-diagnostic screen during repairs. When you have completed the repairs, clear the result display to “0”. Unless the result display is cleared to “0”, the self-diagnostic function will not be able to detect subsequent faults after completion of the repairs.
Clearing
the Result Display
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
To clear the result display to “0”, press buttons on the Remote Commander sequentially when the diagnostic screen is displayed, as shown below:
Channel 8 > ENTER
Quitting
the Self-Diagnostic Screen
To quit the entire self-diagnostic screen, turn off the power switch on the
Remote Commander or the main unit.
Self-Diagnostic
Circuit
+B over-current (OCP)
Occurs when excessive current fl ows through R5013. The increase in voltage across R5013 causes the output of Q5004 to go high, and this high signal goes to the micro.
+B over-voltage (OVP)
IC6505 detects +B OVP condition and turns on Q6522. This sends a high signal to the micro and also shuts down the AC relay.
V-STOP
Occurs when an absence of the vertical de fl ection pulse is detected by pin 24 of IC2801 (B Board). Power supply will shut down when waveform interval exceeds 2 seconds.
White Balance Failure
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC2801. TV will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
Low B OCP/OVP
1. Occurs when set 5V is out.
2. Horizontal Deflection Stopped
3. Occurs when either:
1) a +B over current is detected (IC5007), or
2) overheating is detected (Thermistor TH5002).
Occurs when excessive current fl ows through R5013. The increase in voltage across R5013 causes the output of Q5004 to go high, and this high signal goes to the micro.
+B over-voltage (OVP)
IC6505 detects +B OVP condition and turns on Q6522. This sends a high signal to the micro and also shuts down the AC relay.
V-STOP
Occurs when an absence of the vertical de fl ection pulse is detected by pin 24 of IC2801 (B Board). Power supply will shut down when waveform interval exceeds 2 seconds.
White Balance Failure
If the RGB levels* do not balance within 2 seconds after the power is turned on, this error will be detected by IC2801. TV will stay on, but there will be no picture.
*(Refers to the RGB levels of the AKB detection Ref pulse that detects 1K).
Low B OCP/OVP
1. Occurs when set 5V is out.
2. Horizontal Deflection Stopped
3. Occurs when either:
1) a +B over current is detected (IC5007), or
2) overheating is detected (Thermistor TH5002).
SERVICE ADJUSTMENT MODE
1. Standby mode (Power off).
2. Press the following buttons on the remote commander within a second of each other:
DISPLAY > Channel 5 > Sound Volume [+] > Power. 3. The CRT displays the item being adjusted.
4. Press 1 or 2 on the Remote Commander to select the item.
5. Press 3 or 6 on the Remote Commander to change the data.
6. Press MUTING then ENTER to write into memory.
2. Press the following buttons on the remote commander within a second of each other:
DISPLAY > Channel 5 > Sound Volume [+] > Power. 3. The CRT displays the item being adjusted.
4. Press 1 or 2 on the Remote Commander to select the item.
5. Press 3 or 6 on the Remote Commander to change the data.
6. Press MUTING then ENTER to write into memory.
SERVICE
ADJUSTMENT MODE MEMORY
7. Press then on the Remote
Commander to initialize.
8. DO NOT turn off set until
SERVICE appears.
READING
THE MEMORY
1. Enter into Service Mode.
2. Press 0 on the Remote Commander.
3. Press ENTER to read memory.
1. Enter into Service Mode.
2. Press 0 on the Remote Commander.
3. Press ENTER to read memory.
ADJUSTING
THE PICTURE
1. Enter into Service Mode
2. Press 2 or 5 on the remote to select the device item.
3. Press 1 or 4 on the remote to select an item.
4. Press 3 or 6 on the remote to change the data.
5. Press MUTING then ENTER to write into memory.
1. Enter into Service Mode
2. Press 2 or 5 on the remote to select the device item.
3. Press 1 or 4 on the remote to select an item.
4. Press 3 or 6 on the remote to change the data.
5. Press MUTING then ENTER to write into memory.
RESETTING
THE DATA
Note: Be careful when using the remote! It will clear and re-initialize ALL NVM data including deflection adjustment data if not reset properly as follows:
Note: Be careful when using the remote! It will clear and re-initialize ALL NVM data including deflection adjustment data if not reset properly as follows:
RESETTING
THE MID NVM DATA
1. Enter into Service Mode.
2. Press 7 , then JUMP , and then press ENTER on the remote.
1. Enter into Service Mode.
2. Press 7 , then JUMP , and then press ENTER on the remote.
RESETTING
THE SYSTEM NVM DATA
1. Enter into Service Mode.
2. Press 7 , then 9 , and then press ENTER on the remote.
1. Enter into Service Mode.
2. Press 7 , then 9 , and then press ENTER on the remote.
COPY
FUNCTION
How to use copy function for DA4 Chassis
• After writing your adjusted data into NVM MUTING then ENTER , copy can be made by changing copy data from 0 to 1 then MUTING , ENTER again.
WARNING: DO NOT copy data before writing your corrected data in NVM. If data is copied before writing corrected data, old data will be copied.
• CPY1: DF/DQP DATA
How to use copy function for DA4 Chassis
• After writing your adjusted data into NVM MUTING then ENTER , copy can be made by changing copy data from 0 to 1 then MUTING , ENTER again.
WARNING: DO NOT copy data before writing your corrected data in NVM. If data is copied before writing corrected data, old data will be copied.
• CPY1: DF/DQP DATA
• CPY2: CONVERGENCE DATA
MEMORY
WRITE CONFIRMATION METHOD
1. After adjustment, pull out the plug from the AC outlet, then replace the plug in the AC outlet again.
2. Turn the power switch ON and set to Service Mode.
3. Call the adjusted items again to confirm they were adjusted.
1. After adjustment, pull out the plug from the AC outlet, then replace the plug in the AC outlet again.
2. Turn the power switch ON and set to Service Mode.
3. Call the adjusted items again to confirm they were adjusted.
SMPS SCHEMATIC
DEFLECTION SCHEMATICS
CLICK ON THE PICTURES TO MAGNIFY
