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Technical Bulletin Date Ref. No. Model 06.06.03 HV01502R2 SLV-SE720B, SLV-SE720D, SLV-SE720E, SLV-SE720G, SLV-SE720I, SLV-SE720N, SLV-SE727E, SLV-SE820B, SLV-SE820D, SLV-SE820E, SLV-SE820G, SLV-SE820N, SLV-SX720D, SLV-SX720E, SLV-SX720N, SLV-SX727D HV Subject IRIS No Front Panel Button Operation, No Display, Unstable and Noisy Picture [REVISION 2] 1130 1170 1343 1351 SYMPTOM · · · · The display on the front panel does not operate. Wrong functions are associated with the front panel buttons. The on-screen display is in French language (not in all cases). The RF SWP adjustment is incorrect. * The picture has noise bars in playback mode. * The picture is out of synchronization. CAUSE · · Corrupted data is stored in the NVM memory (IC605) or part of the data is erased. The model option data flags are erased or set incorrectly. SOLUTION 1. Replace IC601 on the Main Board with the type listed in the table below. Destination B, D, E, G, I N Ref. IC601 IC601 Description N128-A90 N128-A91 Part number 1-804-696-13 1-804-697-13 2. CAPACITOR AND RESISTOR REPLACEMENT NOTE ­ For continuous reliability, regardless of the symptom, ALWAYS check and replace if necessary C701 in the correct mounting position and ALWAYS modify R668/R669 from 10k to 4.7k. 2.1. Open the set and replace C701 "470µF 10V" (1-126-925-11). 2.2. Make sure to mount C701 in the correct way, the positive (+) side points to the edge of the MCB. NOTE THAT THE WHITE PRINTING FOR C701 ON THE MCB IS INCORRECT (REVERSE)! Sony Service Centre (Europe) N.V. European Service Engineering Technologielaan 7 B - 1840 Londerzeel 1/3 2/3 HV01502R2 INCORRECT CORRECT 2.3. Replace R668 and R669 "10k" (1-216-675-11) with "4.7k" (1-216-667-11). Main Board (Conductor Side) 3. OPTION DATA SETTINGS 3.1. Connect the unit to the AV input of a television with a SCART connection cable in order to enable the on-screen display. 3.2. Enter the unit into test mode: press the record button on the front panel, then press the menu button on the remote commander for 5 seconds until the option setting display appears on the connected television. The option display has 8 columns and 9 rows with decimal numbers. 3.3. Enter the correct option settings according to the model and model destination. Refer to the option setting table in this document or page 5-6E of the Service Manual. 3.4. The option number is selected with the FF, REW, STOP and PAUSE buttons on the remote commander. 3.5. Pressing the OK (PLAY) button on the remote commander activates the selected option number. An activated option number appears in reverse colour. 3.6. After all required option numbers are activated press the MENU button on the remote commander to save the changes. A message "Please wait" appears for a few seconds after which the setting is completed. 3.7. Turn the power OFF and back ON. HV01502R2 4. HEAD SWITCHING PULSE ADJUSTMENT 4.1. Remove the front panel. 4.2. Insert a VHS alignment tape (like KRV-4821PS). 4.3. Press the TEST b