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• HISTORY INFORMATION FOR THE FOLLOWING MANUAL: SERVICE MANUAL MODEL NAME KV-27S42 KV-27S42 KV-27S46 KV-27S66 KV-27S66 KV-29AL42 KV-29AL42C KV-29AL66 KV-29AL66C KV-29SL42 KV-29SL42C KV-29SL46 KV-29XL42M KV-29SL43 KV-29SL43C ORIGINAL MANUAL ISSUE DATE: 4/1999 ALL REVISIONS AND UPDATES TO THE ORIGINAL MANUAL ARE APPENDED TO THE END OF THE PDF FILE. REVISION DATE REVISION TYPE 6/1999. • SERVICE MANUAL MODEL KV-27S42 KV-27S42 KV-27S46 KV-27S66 KV-27S66 KV-29AL42 KV-29AL42C KV-29AL66 KV-29AL66C KV-29SL42 KV-29SL42C KV-29SL46 KV-29XL42M KV-29AL66 MICROFILM BA-4D COMMANDER DEST CHASSIS NO.

RM-Y165 SCC-S27H-A RM-Y165 SCC-S28F-A RM-Y167 SCC-S27K-A RM-Y167 SCC-S27L-A RM-Y167 SCC-S28G-A RM-Y165 SCC-S25U-A RM-Y165 SCC-S25Y-A RM-Y167 SCC-S25T-A RM-Y167 SCC-S25V-A RM-Y165 SCC-S25W-A. • More than 408 mVrms (fix); Impedance: 5 kilohms ( ) SRS (SOUND RETRIEVAL SYSTEM) The ( ) SRS (SOUND RETRIEVAL SYSTEM) is manufac- tured by Sony Corporation under license from SRS Labs, Inc.

• Bus-Pin ESD Protection Exceeds 16-kV HBM • 1/8 Unit-Load Option Available (Up to 256 Nodes on the Bus) • Optional Driver Output Transition Times for Signaling Rates (1) of 1 Mbps, 10 Mbps, and 32 Mbps • Meets or Exceeds the Requirements of ANSI TIA/EIA-485-A. The Shareable Scanner can send files to any computer on your network and with a capacity of 100 sheets, you can cut down your scan time so you can concentrate on what matters most.

It is covered by U.S. And foreign patents pending. • Section Title Warnings and Cautions. 4 Self-Diagnostic Function. 4 Safety Check-Out Instructions. 8 DISASSEMBLY 2-1.

Rear Cover Removal (KV-27S46/27S66). Rear Cover Removal (KV-29SL42/29C/29SL46/29XL42M).

Rear Cover Removal (KV-29AL42/42C/29AL66/66C). Control Switch Removal 2-5. • FONCTIONNEMENT. NE LES REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU DANS DES SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES DE CIRCUIT DONT L'IMPORTANCE EST CRITIQUE POUR LA SECURITE DU FONCTIONNEMENT SONT IDENTIFIES DANS LE PRESENT MANUEL. SUIVRE CES PROCEDURES LORS DE CHAQUE REMPLACEMENT DE COMPOSANTS CRITIQUES, OU LORSQU'UN MAUVAIS FONTIONNEMENT SUSPECTE. • Display of Standby/Timer LED Flash Count 2 times 4 times 5 times LED ON 0.3 sec.

LED OFF LED OFF 0.3 sec. Diagnostic Item +B overcurrent Vertical deflection stopped White balance failure *One flash count is not used for self-diagnostic. Stopping the Standby/Timer LED Flash Turn off the power switch on the TV main unit or unplug the power cord from the outlet to stop the STANDBY/TIMER LAMP from flashing.

• KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Self-diagnostic Circuit IC301 Y/CHROMA JUNGLE FROM IK IN FROM IC521 HP/PROTECT PIN 7 +B overcurrent (OCP) Occurs when an overcurrent on the +B (115V) line is detected by pin 18 of IC301. If the voltage of pin 18 of IC 301 is less than 1V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off. • After correcting the original service problem, perform the following safety checks before releasing the set to the customer: 1. Check the area of your repair for unsoldered or poorly soldered connections. Check the entire board surface for solder splashes and bridges. • KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Connecting Your TV This section covers basic connections in addition to any optional equipment you may be connecting.

Basic Connections TV with indoor or outdoor antenna, or CATV cable Depending on the cable available in your home, choose one of the connections below: If you are connecting to an indoor or outdoor antenna, it will be necessary to adjust the orientation of the antenna for best reception. • Connecting Your TV TV, VCR, and Cable box Cable box (Optional connection) Cable Connect the coaxial cable from the wall to the IN jack on your cable box. Connect a coaxial cable (not supplied) from the OUT jack on your cable box to the IN jack on your VCR. • CONTROL If, after reading these operating instructions, you have additional questions related to the use of your Sony television, please call our Direct Response Center at 1-800-222-SONY (7669) (U.S. Residents only) or (416) 499-SONY (7669) (Canadian residents only). REAR COVER REMOVAL (KV-27S46/27S66) 2-3.

REAR COVER REMOVAL (KV-29AL42/29AL42C/29AL66/29AL66C) Two Screws (BVTP 3x10) KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/29AL66C/ SECTION 2 DISASSEMBLY 2-2. REAR COVER REMOVAL (KV-29SL42/29SL42C/29SL46/29XL42M) 2-4.CONTROL SWITCH REMOVAL (KV-29AL42/29AL42C/29AL66/29AL66C) Rear Cover Four Claws Nine Screws (BVTP 3x12) — 11 — 29SL42/29SL42C/29SL46/29XL42M Rear Cover Seven screws (BVTP 4X16) Two screws. • KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M 2-5. CHASSIS ASSEMBLY REMOVAL (KV-27S46/27S66/29SL42/29SL42C/29SL46/29XL42M) Board claw A Board E Board 2-7. SERVICE POSITION C Board P Board A Board 2-6. CHASSIS ASSEMBLY REMOVAL (KV-29AL42/29AL42C/29AL66/29AL66C) Board Claw HV Board K Board 2 clips (KV-27S42/27S46/27S66 only) A Board 2 clips (KV-27S42/27S46/27S66 only) E Board —. PICTURE TUBE REMOVAL WARNING: BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected.