Service Manual
Page 4
... melts. Allow the soldering iron tip to reach normal temperature. (500 F to avoid overheating the circuit board printed foil. type solder removal device or with a small wire-bristle brush. -4- Always unplug the receiver AC power cord from the leads of a replacement ES device, touch the protective material to the chassis or circuit...
... melts. Allow the soldering iron tip to reach normal temperature. (500 F to avoid overheating the circuit board printed foil. type solder removal device or with a small wire-bristle brush. -4- Always unplug the receiver AC power cord from the leads of a replacement ES device, touch the protective material to the chassis or circuit...
Service Manual
Page 5
... connections use the standard technique as the solder melts. 2. Heat and remove all solder from the end of the circuit board hollow stake. 2. Fuse and Conventional Resistor Removal/Replacement 1. Carefully remove the damaged copper pattern with a sharp knife. Remove...: Maintain original spacing between the replaced component and adjacent components and the circuit board to remove and replace the IC. Bend a small "U" in paragraphs 5 and 6 above. Solder the connections. Power Output, Transistor Device Removal/Replacement 1. Remove the heat sink mounting screw (if...
... connections use the standard technique as the solder melts. 2. Heat and remove all solder from the end of the circuit board hollow stake. 2. Fuse and Conventional Resistor Removal/Replacement 1. Carefully remove the damaged copper pattern with a sharp knife. Remove...: Maintain original spacing between the replaced component and adjacent components and the circuit board to remove and replace the IC. Bend a small "U" in paragraphs 5 and 6 above. Solder the connections. Power Output, Transistor Device Removal/Replacement 1. Remove the heat sink mounting screw (if...
Service Manual
Page 15
TROUBLESHOOTING NO POWER (POWER INDICATOR OFF) CHECK CN804 VOLTAGE (P-ST_5V) Yes CHECK CRYCTAL X800(19.6608MHZ) Yes CHECK IC806 VOLTAGE (5V) Yes CHECK Power on/off (5V) Yes REPLACE POWER BOARD CHECK POWER BOARD No CHECK CRYSTAL X800 No CHECK IC806 No CHECK Q1001 No - 15 -
TROUBLESHOOTING NO POWER (POWER INDICATOR OFF) CHECK CN804 VOLTAGE (P-ST_5V) Yes CHECK CRYCTAL X800(19.6608MHZ) Yes CHECK IC806 VOLTAGE (5V) Yes CHECK Power on/off (5V) Yes REPLACE POWER BOARD CHECK POWER BOARD No CHECK CRYSTAL X800 No CHECK IC806 No CHECK Q1001 No - 15 -