Technical Guide
Page 5
...disc assembly is first. 2. the disc blocks the Q9103 light. Table 1 SA-HT730 / SAHT930 5 Testing the sensors is the next diagnostic step (section 6) if the transport works but the trick is followed * assembly via cable to align the gears for testing is divided into the disc unchucked closed....and into 6 groups (pick and choose what you need): 1. S9102 detects tray motor gear Slow rotation is unclamped.) 1. Servicing the DVD section is tricky but behaves out of discs on sequence. After AC is disconnected, the unit always powers on sequence is possible when ...
...disc assembly is first. 2. the disc blocks the Q9103 light. Table 1 SA-HT730 / SAHT930 5 Testing the sensors is the next diagnostic step (section 6) if the transport works but the trick is followed * assembly via cable to align the gears for testing is divided into the disc unchucked closed....and into 6 groups (pick and choose what you need): 1. S9102 detects tray motor gear Slow rotation is unclamped.) 1. Servicing the DVD section is tricky but behaves out of discs on sequence. After AC is disconnected, the unit always powers on sequence is possible when ...
Technical Guide
Page 6
...Sled moves out to DVD TOC location. Volts missing 4. Sensors, belts, and motor location Items in dotted lines are under the tray. c) Laser ON. Part numbers Tray Belt = RDV0073 Loading Belt = RDV0073 Loading Motor = REM0112 Tray Motor = same as above SA-HT730 / SAHT930 6 * ...Disc Proof Sequence (no disc loaded) a) Sled moves to home position (at center). d) Focus search 3X. (spins if disc is easier than it looks. Ribbon cable 2. Traverse Motor 5. f) Sled moves out to initial position...
...Sled moves out to DVD TOC location. Volts missing 4. Sensors, belts, and motor location Items in dotted lines are under the tray. c) Laser ON. Part numbers Tray Belt = RDV0073 Loading Belt = RDV0073 Loading Motor = REM0112 Tray Motor = same as above SA-HT730 / SAHT930 6 * ...Disc Proof Sequence (no disc loaded) a) Sled moves to home position (at center). d) Focus search 3X. (spins if disc is easier than it looks. Ribbon cable 2. Traverse Motor 5. f) Sled moves out to initial position...
Technical Guide
Page 7
... Motor 7. To determine which is an internally broken ribbon cable that carries the sensor signal to open tray button permits the tray to the microprocessor. Motor = 14 ohms SA-HT730 / SAHT930 7 Tray Rotation Motor Cable CN2010 CN2010 CN2010 CN2011 CN2011 CN2011 CN2010 Simulated Failures Symptom ...No disc detected (no buttons work except power. If the part tests bad bypass the cable and recheck the part right at...
... Motor 7. To determine which is an internally broken ribbon cable that carries the sensor signal to open tray button permits the tray to the microprocessor. Motor = 14 ohms SA-HT730 / SAHT930 7 Tray Rotation Motor Cable CN2010 CN2010 CN2010 CN2011 CN2011 CN2011 CN2010 Simulated Failures Symptom ...No disc detected (no buttons work except power. If the part tests bad bypass the cable and recheck the part right at...
Technical Guide
Page 8
... trim piece (not shown). 3. Slide the tray out towards yourself) until it stops. 2. On the main board, remove the cable (CN2010) attached to access the sensors and motor first requires removing the tray trim, and then the front panel (not shown) before... yourself to expose the sensors, motors, and belt. 5. 6b 6a 1. 2. 4. Unplug the two front panel cables (CN2008 & CN2009) and remove the front panel (not shown). 4. Quick Procedure: 1. Tray removal revealed SA-HT730 / SAHT930 8 CN2010 Contacts = rear CN2008 Contacts = left CN2009 Contacts = rear Follow figure 2 for Sensors,...
... trim piece (not shown). 3. Slide the tray out towards yourself) until it stops. 2. On the main board, remove the cable (CN2010) attached to access the sensors and motor first requires removing the tray trim, and then the front panel (not shown) before... yourself to expose the sensors, motors, and belt. 5. 6b 6a 1. 2. 4. Unplug the two front panel cables (CN2008 & CN2009) and remove the front panel (not shown). 4. Quick Procedure: 1. Tray removal revealed SA-HT730 / SAHT930 8 CN2010 Contacts = rear CN2008 Contacts = left CN2009 Contacts = rear Follow figure 2 for Sensors,...
Technical Guide
Page 9
...as shown in . 5. Rotate the gear so that its line across the gear is horizontal as shown. 3. The cable's contacts face rearward. 5. Push the tray all that is all the way in figure 3. Main black gear - White... gear - Without crushing the tray's ribbon cable, slide the tray halfway into CN2010. Positioning the main black gear and a white gear is required to figure 3. ... installation (after repairs) Refer to slide the tray back in the tray's ribbon cable into the mechanism. 4. SA-HT730 / SAHT930 9
...as shown in . 5. Rotate the gear so that its line across the gear is horizontal as shown. 3. The cable's contacts face rearward. 5. Push the tray all that is all the way in figure 3. Main black gear - White... gear - Without crushing the tray's ribbon cable, slide the tray halfway into CN2010. Positioning the main black gear and a white gear is required to figure 3. ... installation (after repairs) Refer to slide the tray back in the tray's ribbon cable into the mechanism. 4. SA-HT730 / SAHT930 9
Technical Guide
Page 10
...parts could cause transport problems but shorted when pressed (simulates tray out). If the parts test OK, the problem is mechanical or a ribbon cable is good Motor must turn belt and the main black gear into the disc unclamped position. Part 1. S9001 3. Measure the resistance between CN2011... the main gear to the non-clamped position ("WAIT"). Press the poweron button. Tray out Open - Out) Motor Circuit Cutout shows Q9001 SA-HT730 / SAHT930 10 Testing the Tray Loading Motor and Related Sensors With the tray removed (section 4), install the front panel to block Q9001's light...
...parts could cause transport problems but shorted when pressed (simulates tray out). If the parts test OK, the problem is mechanical or a ribbon cable is good Motor must turn belt and the main black gear into the disc unclamped position. Part 1. S9001 3. Measure the resistance between CN2011... the main gear to the non-clamped position ("WAIT"). Press the poweron button. Tray out Open - Out) Motor Circuit Cutout shows Q9001 SA-HT730 / SAHT930 10 Testing the Tray Loading Motor and Related Sensors With the tray removed (section 4), install the front panel to block Q9001's light...
Technical Guide
Page 11
With the tray removed, install the front panel to 4.6Vdc Figure 5 - Plug the tray ribbon cable into CN2010 for disc playback. 5Vdc. = Tray in transit. Press the power on button. Testing Parts 2/2 Do / Watch Tray motor should turn 8 seconds after... Pin 11 = gnd. Tray rotation motor 5. Tray M rotation sensor S9102 6. Testing the Tray Rotation Motor and Related Sensors 1. Part 4. Press the power on button. SA-HT730 / SAHT930 11 Pin 10 will go from 0 - 2V - 5.6Vdc. Disc presence detector Q9103 Setup Press the power on button. Press the power on button. Pin...
With the tray removed, install the front panel to 4.6Vdc Figure 5 - Plug the tray ribbon cable into CN2010 for disc playback. 5Vdc. = Tray in transit. Press the power on button. Testing Parts 2/2 Do / Watch Tray motor should turn 8 seconds after... Pin 11 = gnd. Tray rotation motor 5. Tray M rotation sensor S9102 6. Testing the Tray Rotation Motor and Related Sensors 1. Part 4. Press the power on button. SA-HT730 / SAHT930 11 Pin 10 will go from 0 - 2V - 5.6Vdc. Disc presence detector Q9103 Setup Press the power on button. Press the power on button. Pin...
Technical Guide
Page 12
... using the jumper wires on the top as test points. II Shutdown Problem Protection Concept - The models SCHT730 and SCHT930 are under the board. The SA-HT930 / SA-HT730 control piece (figure 6, right) has no AC input. all 6 channels and delivers protection information to isolate the problem. Figure 6 - Overall Repair Strategy Shutdown protection... are used to figure 6. Control unit repair starts on page 17. Unscrewing the board from the SB-WA 30 "Subwoofer" piece through a 25 pin umbilical cable (not shown). Subwoofer unit repair starts on page 13. SA-HT730 / SAHT930 12
... using the jumper wires on the top as test points. II Shutdown Problem Protection Concept - The models SCHT730 and SCHT930 are under the board. The SA-HT930 / SA-HT730 control piece (figure 6, right) has no AC input. all 6 channels and delivers protection information to isolate the problem. Figure 6 - Overall Repair Strategy Shutdown protection... are used to figure 6. Control unit repair starts on page 17. Unscrewing the board from the SB-WA 30 "Subwoofer" piece through a 25 pin umbilical cable (not shown). Subwoofer unit repair starts on page 13. SA-HT730 / SAHT930 12
Technical Guide
Page 17
... model does not have a Subwoofer front Amp Board. The SC-HT730 model is triggered, the micro via the 25 pin umbilical cable opens the subwoofer AC relay power relay, shutting off the power for shutdown are connected by isolating the problem SA-HT730 / SAHT930 17 In the subwoofer, the lines monitored for both of... standby voltage (SYS 6V) is lost. All 6 channels to the speaker must be displayed just before power is still present]. Subwoofer Unit Repair (SB-WA730 / SA-WA930) Overview - Refer to figure 11.
... model does not have a Subwoofer front Amp Board. The SC-HT730 model is triggered, the micro via the 25 pin umbilical cable opens the subwoofer AC relay power relay, shutting off the power for shutdown are connected by isolating the problem SA-HT730 / SAHT930 17 In the subwoofer, the lines monitored for both of... standby voltage (SYS 6V) is lost. All 6 channels to the speaker must be displayed just before power is still present]. Subwoofer Unit Repair (SB-WA730 / SA-WA930) Overview - Refer to figure 11.
Technical Guide
Page 21
...bottom frame as shown in figure 14. 4. Subwoofer Operational Service Position - Procedure: 1. Remove screws to the heat sink as shown. 3. Install the umbilical (system) cable if you are troubleshooting with the control unit, otherwise you will tack in a serviceable position. Connect the ground screw terminal to free the bottom frame... 2. Subwoofer Test / Operating Position After removing the boards, the grounds must be reconnected for operation and testing. SBWA930 only Figure 14 - SB-WA930 shown SA-HT730 / SAHT930 21 Rotate the assembly and rest the heat sink on page 15). 5.
...bottom frame as shown in figure 14. 4. Subwoofer Operational Service Position - Procedure: 1. Remove screws to the heat sink as shown. 3. Install the umbilical (system) cable if you are troubleshooting with the control unit, otherwise you will tack in a serviceable position. Connect the ground screw terminal to free the bottom frame... 2. Subwoofer Test / Operating Position After removing the boards, the grounds must be reconnected for operation and testing. SBWA930 only Figure 14 - SB-WA930 shown SA-HT730 / SAHT930 21 Rotate the assembly and rest the heat sink on page 15). 5.