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SC-PT760
Diagram
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User Manual [fr]
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User Manual
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Table of contents
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Panasonic SC-PT760 Diagram

Panasonic Service and Technology Company
SA-
Technical Guide

Home Theater Products Repair

60
For 2008-9 models:
PT7
SA-PT660 SA-PT760 / 954 / 956 SA-PT960 SH-FX65, 67, FX85
(wireless)
Contents
Hints / Layout / Reset 4Wireless Section 8Power On Sequence 14
5 Disc Mechanism (
CR-14)
o Operation 15 o Alignment 16 o Troubleshooting 21 o Laser replacement 25
Power Supply, 31
Herb Chin
Sample Model SC-PT760 Home Theater System
National Training
Protection Troubleshooting
(F61 or F76 Error Code) 34
No Audio (main unit) 39
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85
Panasonic Service and Technology Company
Produced by
Panasonic Services and Technology Company
National Training Department
Secaucus, NJ
Copyright © 2008 by Panasonic Services Company All rights reserved. Unauthorized copying and distribution is a violation of law
Warning
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair the product or products dealt with in this service information by anyone el se coul d result in seri o us injury or death.
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85
Table of Contents
Electronics –Layouts / Hints
Hints – p/n, New codes, Tests, Reset 4 Layout w test points and PS voltages 5
Wireless
SH-FX65/66 Rear Receiver Setup 8Wireless Troubleshooting Plan 9Testing & Paring Trans & Rec 10Transmitter / Receiver Repair Info 11
Power ON
Power On Sequence 14
Mechanism – stacked 5 Disc model CR-14
Operation 15Alignment 16Troubleshooting 21Laser Replacement (removal & install) 25
Power Supply
PS Block with isolation strategy 31

Home Theater Products Repair

center SW
T
R
SW
center
SA-PT660
SA-PT760
PS Circuit with ref voltages 32
Protection
Protection Concept (F61 & F76 codes) 34Protection Circuitry 35Protection Repair Procedure 36
Audio
Concept 39Speaker Output Waveform 40Sample Problems & Repair Methods 41
Slide # 3
T R
center
SW
SA-PT960
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

Hints – I Common P/N, II Missing error codes, III Unplugged cable symptoms, IV Reset

Remote SA-PT760, PT960
Remote SA-PT660 N2QAyb 000 210 Fan L6FAJCCH 0007 Output ICs C1bA 00000 487 Transmit Card Repx 0644b Receiver card Repx 0645b CR-14 Mechanism RD-DDC026-S Exch Traverse / Laser Assem RR-DDtx002-V
IV Reset after DVD Board replacement
1. After replacing the DVD board Play recovery disc
2. Reset –
Slide # 4
I Popular Part Numbers
Description P/N Note
N2QAyb 000 214
(p/n = RFKZD 03r005) containing firmware + update. Select yes or no for update.
1. Select DVD mode & wait for “1 No Disc” display.
2. Press >10 (remote) and (panel). = Stop.
3. Until the display = “INIT”.
4. While still pressing STOP , also press the remote
OK button until the word “RESET” appears.
5. Power off the unit and unplug for 1 min.
II Error Codes not in the Service Manual:
Changer Error – appears when a button is pressed and the
mechanism is not responding. Go to the mechanism troubleshooting of this book to determine if it is mechanical.
Sum Error – Incorrect communications with DVD board micro.
Transport is dead, DVD can not cable or DVD bd.
be selected. Replace 50 pin ribbon
F897 – Play the recovery disc and reset the unit. (see IV at left)
III Troubleshooting by cable Removal
Cable
Removed
1 Large 50 pin
DVD cable CN2001 off
2 2 rear mech
cables off
(fp8531,fp8251)
3 Main Bd.
CN2007 off
4 PS Bd /
mech CN2011 off
Display Symptom
Hello, Aux
(last input),
Close,
“change
error”
Hello, Din.
None
Hello, Change, Open.
Fan on, No AM/FM mode, No audio. Unit remains on.
Vol level # changes w knob but no audio.
Fan on, Mech motor buzzes, display skips DVD when press Sel button, No audio.
CN2007 is only for the display. No display. Unit works OK otherwise.
Fan on, locked on last input mode used but that audio works fine with volume control.
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

PT760 Layout 1 – Top Level

Slide # 5
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

PT760 Layout – Bottom Level

Slide # 6
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85
Table of Contents
Electronics –Layouts / Hints
Hints – p/n, New codes, Tests, Reset 4 Layout w test points and PS voltages 5
Wireless
SH-FX65/66 Rear Receiver Setup 8Wireless Troubleshooting Plan 9Testing & Paring Trans & Rec 10Transmitter / Receiver Repair Info 11
Power ON
Power On Sequence 14
Mechanism – stacked 5 Disc model CR-14
Operation 15Alignment 16Troubleshooting 21Laser Replacement (removal & install) 25
Power Supply
PS Block with isolation strategy 31

Home Theater Products Repair

center SW
T
R
SW
center
SA-PT660
SA-PT760
PS Circuit with ref voltages 32
Protection
Protection Concept (F61 & F76 codes) 34Protection Circuitry 35Protection Repair Procedure 36
Audio
Concept 39Speaker Output Waveform 40Sample Problems & Repair Methods 41
Slide # 7
T R
center
SW
SA-PT960
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

Home Theater Wireless Products

Panasonic Model SA-PT660 – no wireless spks.
(optional FX67 or / & FX85) SA-PT760 – wireless rear spks. SA-PT960 – wireless rear spks + more pwr
Need a manual for the wireless portions of the above units? Try a model below.
SH-FX65 – takes spk wires. SH-FX67 – takes spk plug.
Wireless rear receiver
Optional for the ‘PT660
SH-FX65/67
max range = 49’
Slide # 8
Transmitter card – REPX 0644b Receiver card - REPX 0645b
ID set
button
(back)
Receiver Transmitter card
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

SA-PT760 Wireless Troubleshooting Plan

Wireless rear does not work – W1 or W2 display icons do blink at power on.
1. RF connection has not been made. Go to slide 6 to pair the transmitter and receiver.
Steps 1-6.
2. Go to slide 8 to troubleshoot the receiver. Make sure there is standby voltage input the
receiver and the pair button is working (pin 9 grounds when the button is pressed.
3. Go to slide 7 to check the transmitter card Sw +5V voltage at the main board (CN2003)
or at the card socket itself CN6301).
Wireless rear does not work – W1 or W2 display icons do NOT blink at power on.
1. The RF connection is OK. No audio is the problem. Replace the transmitter card if
hot (damaged when plugged in while the unit was powered on).
2. Go to slide 6 and follow steps 7 to turn on “S Music” mode (surround music). This
makes the rear surround speaker sound the same as main L & R.
Slide # 9
3. Input an audio source (play some music).
4. Disconnect the speakers and turn the volume control to max (level number 50 is
displayed).
5. Go to slide 8. Check for audio at the receiver card CN1100/pins 2 & 4.
6. If there was no audio present at CN1100 (receiver), Go to slide 7. Check for audio at
the transmitter socket CN6301/pins 10 & 12.
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

Wireless Information – RF Pairing / Matching T & R

RF Pairing
1. Proximity – Bring the wireless receiver to the transmitter.
2. Power ON – Plug the transmitter card in. Turn everything on
and press the selector button for DVD mode. (Do not plug the card in with the unit on. A damaged card will get hot.)
3. Setup – While the W1 / W2 icon is blinking in the unit’s
display, hold down the front panel FF button and the remote’s “3” Button.
4. Indicators – a) W1 / W2 will blink on the main unit’s display
if the transmitter card is inserted. b) “P” icon will be displayed when the pairing process is started.
5. Mating – While the “P” is present, press the rear receiver
recessed “ID Set” button.
6. Indicator – The W1 / W2 will stop blinking proving an RF
match has been made.
2. Transmitter card
5. ID Set button
ID Set
3. Press panel FF & 3 buttons
On
7. Audio Test – Repeatedly press the remote’s SOUND button until the
panel displays “S.Music”. Then press the arrow button to turn ON “S. Music”. The rear speakers will have the same music as the front L & R.
8. W1 / W2 still blinking? – Use the troubleshooting info in the next pages.
Slide # 10
7. Rear Audio Test
1. H. Bass
2. R.C. FCS
3. SRD Enh(ance)
4. S.Music
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

Wireless - Troubleshooting Information ½ - Transmitter part

Use this diagram to:
Prove that the T card is recognized (CN2003/pin 11).Power is getting to the T card (CN2003/pin 9).Audio is getting to the T card (CN2003/ pin 2-8).
When the T card is inserted, the micro blinks a W1 icon
Transmitter card – REPX 0644b Receiver card - REPX 0645b
Notes:
1. Measure the voltages at the CN2003 main board with the Transmitter card / Bd. plugged in.
2. Channel 2 audio is present with a surround sound DVD or if the S Music is turned ON. See the previous slide, step 7 for access S Music.
nd
3. Channel 1 audio is only present when its 2
room accessory
transmitter card is plugged in. Otherwise channel 1 is muted.
4. Data is only present when the T card is in.
Slide # 11
Rear of Main Unit
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85

Wireless - Troubleshooting Information 2/2 – Receiver part

Use this diagram to:
Receiver card is getting power (CN1100/pin 5). Receiver card is outputting Audio (CN1100/ pin 2). Receiver card is not muting the audio (CN1100/ pin 10).
Transmitter card – REPX 0644b Receiver card - REPX 0645b
SH-FX67 receiver / amp
Slide # 12
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85
Table of Contents
Electronics –Layouts / Hints
Hints – p/n, New codes, Tests, Reset 4 Layout w test points and PS voltages 5
Wireless
SH-FX65/66 Rear Receiver Setup 8Wireless Troubleshooting Plan 9Testing & Paring Trans & Rec 10Transmitter / Receiver Repair Info 11
Power ON
Power On Sequence 14
Mechanism – stacked 5 Disc model CR-14
Operation 15Alignment 16Troubleshooting 21Laser Replacement (removal & install) 25
Power Supply
PS Block with isolation strategy 31

Home Theater Products Repair

center SW
T
R
SW
center
SA-PT660
SA-PT760
PS Circuit with ref voltages 32
Protection
Protection Concept (F61 & F76 codes) 34Protection Circuitry 35Protection Repair Procedure 36
Audio
Concept 39Speaker Output Waveform 40Sample Problems & Repair Methods 41
Slide # 13
T R
center
SW
SA-PT960
Outline Wireless Mech Pwr Supply Protection Audio
Models: SA-PT660 SA-PT760 SA-PT960 SA-PT1060 SH-FX67, 85
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