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HISTORY INFORMATION FOR THE FOLLOWING MANUAL:

SERVICE MANUAL

MODEL NAME
KV-27HS420
KV-27HS420
KV-29DRC430
KV-29DRC430
KV-30HS420
KV-30HS420
KV-30HS420
KV-32HS420
KV-32HS420
KV-34HS420
KV-34HS420
This manual is for units starting with the following S/N's:
For KV-27HS420/30HS420/32HS420/34HS420
4,500,001 to 7,999,999
8,500,001 to 8,999,999
9,500,001 to 9,999,999
ORIGINAL MANUAL ISSUE DATE: 7/2005
REVISION DATE
7/2005
9-965-986-01
REMOTE COMMANDER
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
RM-Y197
SUBJECT
No revisions or updates are applicable at this time.
DA-4
DESTINATION
CHASSIS NO.
US
SCC-S76C-A
CANADA
SCC-S70X-A
LATIN NORTH
SCC-S71S-A
LATIN SOUTH
SCC-S71T-A
US
SCC-S76D-A
CANADA
SCC-S70Y-A
HAWAII
SCC-S69R-A
US
SCC-S76E-A
CANADA
SCC-S78A-A
US
SCC-S76F-A
CANADA
SCC-S78B-A
For KV-29DRC430
4,000,001 to 4,499,999
8,000,001 to 8,499,999
9,000,001 to 9,499,999
®
TRINITRON
COLOR TELEVISION
CHASSIS

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Table of Contents

   Related Manuals for Sony TRINITRON KV-27HS420

   Summary of Contents for Sony TRINITRON KV-27HS420

  • Page 1: Service Manual

    HISTORY INFORMATION FOR THE FOLLOWING MANUAL: DA-4 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO. KV-27HS420 RM-Y197 SCC-S76C-A KV-27HS420 RM-Y197 CANADA SCC-S70X-A KV-29DRC430 RM-Y197 LATIN NORTH SCC-S71S-A KV-29DRC430 RM-Y197 LATIN SOUTH SCC-S71T-A KV-30HS420 RM-Y197 SCC-S76D-A KV-30HS420 RM-Y197 CANADA SCC-S70Y-A KV-30HS420 RM-Y197...
  • Page 2 Self Diagnosis Supported model DA-4 SERVICE MANUAL CHASSIS MODEL NAME REMOTE COMMANDER DESTINATION CHASSIS NO. KV-27HS420 RM-Y197 SCC-S76C-A KV-27HS420 RM-Y197 CANADA SCC-S70X-A KV-29DRC430 RM-Y197 LATIN NORTH SCC-S71S-A KV-29DRC430 RM-Y197 LATIN SOUTH SCC-S71T-A KV-30HS420 RM-Y197 SCC-S76D-A KV-30HS420 RM-Y197 CANADA SCC-S70Y-A KV-30HS420 RM-Y197 HAWAII SCC-S69R-A...
  • Page 3: Table Of Contents

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 TABLE OF CONTENTS SECTION TITLE PAGE SECTION TITLE PAGE Specifi cations ................. 4 SECTION 4: CIRCUIT ADJUSTMENTS ..........39 Warnings and Cautions ..............6 4-1. Setting Service Adjustment Mode ........39 Safety Check-Out ................7 4-1.1. Service Adjustment Mode In ........39 Self-Diagnostic Function ..............
  • Page 4: Specifi Cations

    High-Definition Multimedia Interface are trademarks or registered trademarks of HDMI Licensing LLC. Wega, FD Trinitron, Steady Sound, Digital Reality Creation, Cap- tion Vision, and CineMotion are registered trademarks of Sony Corporation. ClearEdge VM and HD Detailer are trademarks of Sony Corporation.
  • Page 5 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 Television system American TV standard, NTSC Channel coverage VHF: 2-13/ UHF: 14-69/ CATV: 1-125 Picture tube ® FD Trinitron tube Visible screen size 27-inch picture measured diagonally (KV-27HS420/29DRC430 Only) 30-inch picture measured diagonally (KV-30HS420 Only) 32-inch picture measured diagonally (KV-32HS420 Only) 34-inch picture measured diagonally (KV-34HS420 Only) Actual screen size 29-inch measured diagonally (KV-27HS420/29DRC430 Only)
  • Page 6: Warnings And Cautions

    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 identifi...
  • Page 7: Safety Check-out

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 SAFETY CHECK-OUT Leakage Test After correcting the original service problem, perform the following The AC leakage from any exposed metal part to earth ground and from safety checks before releasing the set to the customer: all exposed metal parts to any exposed metal part having a return to chassis, must not exceed 0.5 mA (500 microamperes).
  • Page 8: Self-diagnostic Function

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 Self Diagnosis SELF-DIAGNOSTIC FUNCTION Supported model The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER LED will automatically begin to fl ash. The number of times the LED fl ashes translates to a probable source of the problem. A defi nition of the STANDBY/TIMER LED fl ash indicators is listed in the instruction manual for the user’s knowledge and reference.
  • Page 9 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 Self-Diagnostic Screen Display For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confi rmed, it is possible to bring up past occurrences of failure on the screen for confi rmation. To Bring Up Screen Test In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below: DISPLAY...
  • Page 10 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 +B overcurrent (OCP) Occurs when excessive current fl ows through R5013. The increase in voltage across R5013 causes the output of Q5004 to go high, and this high signal goes to the micro. +B overvoltage (OVP) IC6505 detects +B OVP condition and turns on Q6522. This sends a high signal to the micro and also shuts down the AC relay. V-STOP Occurs when an absence of the vertical defl...
  • Page 11: Section 1: Disassembly

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 SECTION 1: DISASSEMBLY 1-1. REAR COVER REMOVAL 4 Screws +BVTP 4 x 16 TYPE2 TT (B) Rear Cover 5 Screws 5 Screws +BVTP 4 x 16 +BVTP 4 x 16 TYPE2 TT (B) TYPE2 TT (B) 1-2. CHASSIS ASSEMBLY REMOVAL 1-3.
  • Page 12: 1-4. Picture Tube Removal

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 1-4. PICTURE TUBE REMOVAL WARNING: BEFORE REMOVING THE ANODE CAP High voltage remains in the CRT even after the power is disconnected. To avoid electric shock, Coated discharge CRT before attempting to remove the anode cap. Short between anode and CRT Earth Ground coated earth ground strap.
  • Page 13: Cable Wire Dressing

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 CABLE WIRE DRESSING NOTE: IF THE WIRE DRESSING IS NOT DONE PROPERLY, IT MAY CAUSE DISTORTION G2 & FOCUS LEAD WIRE DRESSING [CH] [CX] CLP9003 CRT SOCKET CN9109 CN9003 CN9004 Push Wire Down CLP9002 HERE FOCUS LEAD Dress wires in Clamp on U-Bracket SIDE VIEW...
  • Page 14: Rear View

    KV-27HS420/29DRC430/30HS420/32HS420/34HS420 G2 WIRE ROUTING CAUTION POINT G2 WIRE 1-900-808-42 REV-1 REAR VIEW 3/11/05 Dress wire in “L” Shape. U-Bracket O.K. CONDITION N.G CONDITION SIDE VIEW SIDE VIEW Wire Holder N.G! p/n: 4-065-850-11 Wire can touch Wire Holder Rear Cover!! p/n: 4-065-850-11 G2 Wire MUST be routed correctly so that the wire does NOT touch Rear Cover (Causes “Buzzing”...
  • Page 15 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 KV-27HS420/29DRC430/32HS420 ECG WIRE DRESSING (Earth Coating Ground) Caution Points: 1. Make sure braided ECG wire loop does not twist, and stays flat on CRT surface. 2. Do not pull excessively on the tension spring NOTE2: There are NOTE: Leads are 3.
  • Page 16 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 KV-30HS420/34HS420 ECG WIRE DRESSING NOTE2: There are 2 Leads (TOTAL 4 Wires) to connect to CX-Board 2-022-978-01 Wire Clip (2 Places) NOTE: Leads are dressed inside Rotation Coil. Rotation COIL SPRING (2 places) Integral part of the Ground wire ECG - P/N 1-900-808-30 - 30 WCRT 1-900-808-31 - 34W CRT...
  • Page 17 KV-27HS420/29DRC430/30HS420/32HS420/34HS420 ECG ASSEMBLY CAUTION POINTS CRT Frit-Line CRT Frit-Line FRONT FRONT Make sure braided Make sure braided wire does not twist or wire does not twist or SPEAKER sag on CRT surface. sag on CRT surface. SPEAKER Caution: Caution: Clip spring on Clip spring on the OUTSIDE the OUTSIDE...

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