Panasonic HTS SA PT860E SMPS and Amplifier circuit diagram, power supply troubleshooting

Panasonic HTS SA-PT860E  SA-PT860EB  SA-PT860EG  DVD Home Theater Sound System

SMPS and Amplifier circuit diagram, power supply troubleshooting procedure, software update procedure

Troubleshooting

* FL display blinking with abnormal segment when power ON the set or "F61"

> Check the soldering of the SMPS P.C.B.
>  Is there any solder crack at area (Q5860,Q5861, Q5862,TH5860, QR5801)
> Check all the supply line 30V
> Is there any solderability at area of feedback circuit
> Check feedback circuit (IC5801, Q5802, D5806, PC5720, D5725

Touch-up the solder crack area/ Change the defective parts.
Q5860,Q5861,Q5862,TH5860
(Temperature Detect)
QR5801 & QR5802 ( 30V Detect)
Touch-up the necessary areas
IC5801, D5806, PC5720, D5725.

* First Power ON Display immediate show "F61".

Check Speaker output by using multi-meter,
> If there is a DC Voltage around 30V
 Check Output IC (Pin 10 & 14) which have DC Voltage at Speaker output short to Vdd/Vss
If shorted that means D-Amp damage already.

Change the defective parts.

D-AMP IC: IC5000/IC5200/IC5300/IC5400

P/N = C1BA00000487

* Power ON for a while then only trigger "F61". (Symptom frequently happen)

Check the fan connection & feedback loop:

• If the fan not proper connected, "F61" will trigger when the volume increase.

• If the fan is not working, check for fan circuit.  Check the soldering of the SMPS P.C.B.

• Is there any solder crack at area (Q5860,Q5861, Q5862,TH5860, QR5801)

• Check all the supply line 30V

Re-connect the Fan to CN5501
Fan circuit: Q5640, Q5641, Q5642, Q5644
Touch-up the solder crack area/ Change the defective parts.
 Q5860,Q5861,Q5862,TH5860 (Temperature Detect)
 QR5801 & QR5802 ( 30V Detect)
Feedback Circuit: IC5801, PC5720, D5725.

* Power ON for a while and then trigger "F76"

Check all supply voltages as follows:
Step 1: Check for supply voltages from SMPS P.C.B to Power Supply P.C.B at pin 8 & 9 of CN2004. If there are supply voltages, proceed to Step 2.
If no voltages detected, check wire connection and circuitry connection from SMPS P.C.B.
Step 2: Check if there is supply voltages for Vp, F+ & F- at CN2016
 If there is supply voltages of +5.3V, +2.5V (For DVD), +6V (SYS6V), +9V & +18V at CN2016
 If there is supply voltages of 7V at CN6001.

Check and change the possible defective parts.
 FP2901 (Fuse Protector), T2900, D2901, D2906, D2908, D2909
 IC2903 (DC-DC Converter IC) & related regulator circuit components
 IC2900 (DC-DC Converter IC) & related regulator circuit components

 Sales Demonstration Lock Function

This function prevents discs from being lost when the unit is used for sales demonstrations by disabling the disc eject function.
"LOCKED" is displayed on the unit, and ordinary operation is disabled.
Setting
Prohibiting removal of disc
1. Select the DVD/CD function.
2. At POWER ON condition, press and hold down the Stop button and the power button on the main unit for at least three seconds. (The message, “LOCKED” appears when the function is activated.)

Note:
OPEN/CLOSE button is invalid and the main unit displays “LOCKED” while the lock function mode is entered.
Prohibiting operation of selector and disc
1. Select the DVD/CD function.
2. At POWER ON condition, press and hold down the Play button and the power button on the main unit for at least three seconds. (The message, “LOCKED” appears when the function is activated.)

Cancellation
The lock can be cancelled by the same procedure as used in setting. ("UNLOCKED" is displayed on cancellation. Disconnecting
the power cable from power outlet does not cancel the lock.)
Recovery after the DVD player is repaired
When the FLASH ROM IC or DVD Module P.C.B. is replaced, carry out the recovery processing to optimize the drive.
Playback the recovery disk to process the recovery automatically.
Recovery disc (Product number: RFKZD03R005) [SPG]
Performing recovery process
1. Load the recovery disc RFKZD03R005 on to the player and run it.
2. Recovery is performed automatically. When it is finished, a message appears on the screen.
3. Remove the recovery disc.
4. Turn off the power.
5. Initialize the player.

D-Amp circuit and PWB Click on the pictures to zoom in

SMPS circuit and PWB

Checking & Repairing SMPS P.C.B.
Step 1 Remove the 8P cable (SMPS P.C.B. to D-Amp P.C.B.) from the big wire holder.
Step 2 Remove the 11P cable (SMPS P.C.B. to Power Supply P.C.B.) from the big wire holder.
Step 3 Remove 4 screws on SMPS P.C.B

Step 4 Detach SMPS P.C.B. from the bottom chassis and flip it vertically.
Step 6 Connect 13P cable at the connector (CN2016) on Power Supply P.C.B.
Step 7 Connect 28P cable at the connector (CN6001) on Power Supply P.C.B.
Step 8 Connect 17P cable at the connector (CN2007) on Main P.C.B.
Step 9 Connect 4P cable at the connector (CN2013) on Main P.C.B.Firmware version-up of the DVD player

The firmware of the DVD player may be renewed to improve the quality including operability and playability to the substandard discs. Processing to optimize the drive.

The recovery disc has also firmware version-up.

After version-up, recovery processing is executed automatically.

Part number of the recovery disc for version-up will be noticed when it is supplied.

Updating firmware

1. Load the recovery disc on to the player and run it.

2. Firmware version of the player is automatically checked. Appropriate message appears whenever necessary.

3. Using remote controller´s cursor key, select whether version updating is to be done or not. (Selection of Yes/No)

4. a. If Yes is selected, version updating is performed.

b. If No is selected, only recovery is performed.

5. a. When updating is finished, remove the disc according to the message appearing on the screen.

b. Remove the disc according to the message appearing on the screen.

6. Turn off the power.

Note:
If the AC power supply is shut out during version-up due to a power failure, the version-up is improperly carried out.  In such a case, replace the FLASH ROM IC and carry out the version-up again.
DVD Module P.C.B. Reset
When after replacing FLASH ROM IC or DVD Module P.C.B., FL displays error code “ DVD F897”. This means the unit is not initialized properly and the following process needs to be carry out.
Procedures:
1. Press “>10” on remote control while pressing “STOP” button on main unit. (To enter into initialization)

2. FL display show “INIT”
3. While still pressing “STOP” button on main unit, press “OK” on remote control. (To reset the unit)
4. FL will display “RESET” before FL display will change to TOC reading again.
5. Power off unit. Unplug the AC cord.
6. Power on the unit. It should be no problem. If problem persist check on the DVD Module P.C.B. or F

LASH ROM IC.