Technical Guide
Page 7
...disc detected (no buttons work except power. and the mech clamps & then unclamps. Repeats. Tray Loading Motor 7. Front panel display = "Please Wait" or "Open/Close" Front panel display = "Please Wait" Table 3 Comments Unit shuts down . To determine which is an internally broken ribbon cable ...error code shown. Pressing the open tray button permits the tray to the microprocessor. Tray will not stay open . 3. Motor = 14 ohms SA-HT730 / SAHT930 7 quick fixes Although sensor failures cause the following symptoms listed in table 3, the more common failure is at fault, begin testing ...
...disc detected (no buttons work except power. and the mech clamps & then unclamps. Repeats. Tray Loading Motor 7. Front panel display = "Please Wait" or "Open/Close" Front panel display = "Please Wait" Table 3 Comments Unit shuts down . To determine which is an internally broken ribbon cable ...error code shown. Pressing the open tray button permits the tray to the microprocessor. Tray will not stay open . 3. Motor = 14 ohms SA-HT730 / SAHT930 7 quick fixes Although sensor failures cause the following symptoms listed in table 3, the more common failure is at fault, begin testing ...
Technical Guide
Page 8
...tray out towards yourself) until it stops. 2. From the bottom of the tray (figure 2). 7. Unplug the two front panel cables (CN2008 & CN2009) and remove the front panel (not shown). 4. Release the two parallel tray stops (a and b) by pressing the larger tab (closest to you) ... within the turntable platter to expose the sensors, motors, and belt. 5. 6b 6a 1. 2. Tray Removal for easy tray removal. Tray removal revealed SA-HT730 / SAHT930 8 CN2010 Contacts = rear CN2008 Contacts = left CN2009 Contacts = rear On the main board, remove the cable (CN2010) attached to access ...
...tray out towards yourself) until it stops. 2. From the bottom of the tray (figure 2). 7. Unplug the two front panel cables (CN2008 & CN2009) and remove the front panel (not shown). 4. Release the two parallel tray stops (a and b) by pressing the larger tab (closest to you) ... within the turntable platter to expose the sensors, motors, and belt. 5. 6b 6a 1. 2. Tray Removal for easy tray removal. Tray removal revealed SA-HT730 / SAHT930 8 CN2010 Contacts = rear CN2008 Contacts = left CN2009 Contacts = rear On the main board, remove the cable (CN2010) attached to access ...
Technical Guide
Page 10
.../ pin 6 = 0.1V - 4.6Vdc as gear is good Motor must turn belt and the main black gear into the disc unclamped position. Tray in front panel ribbon cables CN2008 and CN2009. Main gear position Q9001 Setup 1. Measure the resistance between CN2011 / pin 1 and pin 2. Plug in [Front... unit from 0.1Vdc to 4.6Vdc as a group once the tray is bad. The unit will change from AC power. Out) Motor Circuit Cutout shows Q9001 SA-HT730 / SAHT930 10 Test all 5 sensors and 2 motors as you rotate the main gear to the position shown in - 6. S9001 3. Press power on. Loading (...
.../ pin 6 = 0.1V - 4.6Vdc as gear is good Motor must turn belt and the main black gear into the disc unclamped position. Tray in front panel ribbon cables CN2008 and CN2009. Main gear position Q9001 Setup 1. Measure the resistance between CN2011 / pin 1 and pin 2. Plug in [Front... unit from 0.1Vdc to 4.6Vdc as a group once the tray is bad. The unit will change from AC power. Out) Motor Circuit Cutout shows Q9001 SA-HT730 / SAHT930 10 Test all 5 sensors and 2 motors as you rotate the main gear to the position shown in - 6. S9001 3. Press power on. Loading (...
Technical Guide
Page 11
... Move the tray past the disc center position at CN2010/pin 2: 0.15Vdc = Tray centered for testing. With the tray removed, install the front panel to tray motor: Pin 11 = gnd. Disc presence detector Q9103 Setup Press the power on button. Testing Parts 2/2 Do / Watch Tray motor... Tray Rotation Motor and Related Sensors 1. Part 4. Tray rotation motor 5. Table 5 Proof the part is good Power to begin the remaining tests. 2. SA-HT730 / SAHT930 11 Press the power on button. Volts at the laser assembly. Tray Rotation circuit CN2010/Pin 2: 0.15 = disc centered 5Vdc = tray...
... Move the tray past the disc center position at CN2010/pin 2: 0.15Vdc = Tray centered for testing. With the tray removed, install the front panel to tray motor: Pin 11 = gnd. Disc presence detector Q9103 Setup Press the power on button. Testing Parts 2/2 Do / Watch Tray motor... Tray Rotation Motor and Related Sensors 1. Part 4. Tray rotation motor 5. Table 5 Proof the part is good Power to begin the remaining tests. 2. SA-HT730 / SAHT930 11 Press the power on button. Volts at the laser assembly. Tray Rotation circuit CN2010/Pin 2: 0.15 = disc centered 5Vdc = tray...
Technical Guide
Page 22
... more channels) Once an audio tone is generated (A) it can either be followed through the unit (B). SA-HT730 / SAHT930 22 Use the following two diagrams to the headphones). 1. TV, VCR, and FM - A- DVD - When playing a DVD movie with DTS or Dolby Digital ("SFC" will light in the display and) all 6 channels output.... Older stereo-only movies (no sound from the front and subwoofer speakers only unless the remote's "Super Srnd" button is pressed, the front panel display shows "Error". III "No Audio" Problems A loss of accessible capacitors in the signal path for signal tracing.
... more channels) Once an audio tone is generated (A) it can either be followed through the unit (B). SA-HT730 / SAHT930 22 Use the following two diagrams to the headphones). 1. TV, VCR, and FM - A- DVD - When playing a DVD movie with DTS or Dolby Digital ("SFC" will light in the display and) all 6 channels output.... Older stereo-only movies (no sound from the front and subwoofer speakers only unless the remote's "Super Srnd" button is pressed, the front panel display shows "Error". III "No Audio" Problems A loss of accessible capacitors in the signal path for signal tracing.
Technical Guide
Page 23
...and repeats. The test tone lasts for DVD mode. Test Tone generating procedure: a) Turn the unit on. b) Press the front panel or remote input selector to use the internal speaker level test mode. press ENTER or both the SHIFT and TEST buttons. Figure 16 SA-HT730 / SAHT930 23 Once in the path.... The front panel display will show the speakers that are for approx half second at a time except the subwoofer. B Tracing the audio ...
...and repeats. The test tone lasts for DVD mode. Test Tone generating procedure: a) Turn the unit on. b) Press the front panel or remote input selector to use the internal speaker level test mode. press ENTER or both the SHIFT and TEST buttons. Figure 16 SA-HT730 / SAHT930 23 Once in the path.... The front panel display will show the speakers that are for approx half second at a time except the subwoofer. B Tracing the audio ...