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Sharp 29FL84M Service Manual
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Sharp 29FL84M Service Manual

Sharp 29FL84M Service Manual

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In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its
original condition and only parts identical to those specified should be used.

» ELECTRICAL SPECIFICATIONS ......................................................................................................... 1

» IMPORTANT SERVICE SAFETY PRECAUTION ................................................................................. 2
» LOCATION OF USER'S CONTROL ..................................................................................................... 4
» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................ 5
» SERVICE ADJUSTMENT ..................................................................................................................... 9
» CHASSIS LAYOUT ............................................................................................................................. 12
» BLOCK DIAGRAM .............................................................................................................................. 13
» DESCRIPTION OF SCHEMATIC DIAGRAMS & WAVEFORMS ........................................................ 14
» SCHEMATIC DIAGRAMS ................................................................................................................... 15
» PRINTED WIRING BOARD ASSEMBLIES ........................................................................................ 22
» PARTS LIST ........................................................................................................................................ 27
» PACKING OF THE SET ...................................................................................................................... 35
POWER INPUT ..................................................... 120V AC, 60 Hz
POWER RATING .................................................................. 130W
PICTURE SIZE ....................................... 2,193.5 cm
CONVERGENCE ............................................................. Magnetic
SWEEP DEFLECTION .................................................... Magnetic
FOCUS ............................................... Hi-Bi-Potential Electrostatic
INTERMEDIATE FREQUENCIES
Picture IF Carrier Frequency ..................................... 45.75 MHz
Sound IF Carrier Frequency ...................................... 41.25 MHz
Color Sub-Carrier Frequency .................................... 42.17 MHz
AUDIO POWER
OUTPUT RATING .............. 5.0W + 5.0W (at 10% distortion and

SHARP CORPORATION

SERVICE MANUAL

MODELS
CONTENTS
ELECTRICAL SPECIFICATIONS
SPEAKER
SIZE ........................................................ 12 x 6 cm oval (2 pcs.)
2
(339sq inch)
VOICE COIL IMPEDANCE ............................... 8 ohm at 400 Hz
ANTENNA INPUT IMPEDANCE
VHF/UHF ..................................................... 75 ohm Unbalanced
TUNING RANGES
VHF-Channels ............................................................... 2 thru 13
UHF-Channels ............................................................ 14 thru 69
CATV Channels ........................................................... 1 thru 125
(Nominal)
Dual CH Operate)
Specifications are subject to change without
prior notice.
This document has been published to be used for after
sales service only.
The contents are subject to change without notice.
COLOR TELEVISION
Chassis No. GB-3U'
29FL84M
(EIA, Channel Plan U.S.A.)
29FL84M
Page

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  • Page 1: Table Of Contents

    29FL84M SERVICE MANUAL COLOR TELEVISION Chassis No. GB-3U' 29FL84M MODELS In the interests of user-safety (Required by safety regulations in some countries ) the set should be restored to its original condition and only parts identical to those specified should be used.

  • Page 2: Important Service Safety Precaution

    29FL84M IMPORTANT SERVICE SAFETY PRECAUTION Ë Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and the servicing guidelines which follow: WARNING X-RADIATION AND HIGH VOLTAGE LIMITS 1. For continued safety, no modification of any circuit 1.

  • Page 3: Safety Notice

    29FL84M IMPORTANT SERVICE SAFETY PRECAUTION (Continued) • Connect the resistor connection to all exposed metal BEFORE RETURNING THE RECEIVER parts having a return to the chassis (antenna, metal (Fire & Shock Hazard) cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop Before returning the receiver to the user, perform across the resistor.

  • Page 4: Location Of User's Control

    29FL84M LOCATION OF USER'S CONTROL Front Panel POWER INSIDE DOOR Press → On. Press again → Off. VIDEO/AUDIO IN 2 TERMINALS REMOTE CONTROL SENSOR CHANNEL UP/DOWN MENU ( ) Selects next higher channel Press → Accesses MAIN MENU. ( ) Selects next lower channel Press again →...

  • Page 5: Installation And Service Instructions

    29FL84M INSTALLATION AND SERVICE INSTRUCTIONS Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic screwdrivers or TV alignment tools. (2) Before performing adjustments, the TV set must be on at least 15 minutes. CIRCUIT PROTECTION HIGH VOLTAGE CHECK High voltage is not adjustable but must be checked The receiver is protected by a 4.0A fuse (F701),...
  • Page 6 29FL84M For adjustments of this model, the bus data is converted to various analog signals by the D/A converter circuit. Note: There are still a few analog adjustments in this series such as focus and master screen voltage. Follow the steps below whenever the service adjustment is required. See "Table-B" to determine, if serv- ice adjustments are required.
  • Page 7 TINT-S 0-127 (00h-7Fh) 62 (3Eh) Component Input C-TRAP 0-1 (00h-01h) 0 (00h) AUTO FRESH 0-1 (00h-01h) 0 (00h) SHARP P F 0-1 (00h-01h) 1 (01h) CD MATRIX 0-3 (00h-03h) 2 (02h) B-Y ATT 0-1 (00h-01h) 0 (00h) R-Y ATT 0-1 (00h-01h)
  • Page 8 29FL84M DATA SERVICE NOTES FIXED VALUE ADJUSTMENT ITEM NUMBER (HEX) RANGE INITIAL VALUE EW CORNER BOTTOM 19-81 (13h-51h) 50 (32h) Offset toward D13. NOISE DET LEVEL 0-3 (00h-03h) 0 (00h) V CENTERING 0-63 (00-3Fh) 36 (24h) V-AGC 0-1 (00h-01h) 0 (00h)

  • Page 9: Service Adjustment

    29FL84M Holding down both the VOL-up and CH-up buttons on the TV set at service mode for more than 2 seconds will automatically write the above initial values into IC2101. ADJUSTMENT PART REPLACED NOTES NECESSARY UNNECESSARY IC2001 Data is stored in IC2101.
  • Page 10 29FL84M Sub-Tint Adjustment Note: Aging for 10 min before adjustment. After the adjustment of V-center and V-size, re- 1. Receive the half color bar signal. • RF INPUT (TU51) adjustment for this V-line. 2. Get into Y-Mute by R/C, or by setting the "V11" bus data to "01".

  • Page 11: Mts Adjustment

    29FL84M Ë MTS ADJUSTMENT MTS Level Adjustment 1. Set the sound volume above 1. Monoral signal: 400Hz, 100% modulation 2. Confirm "EX4" data is "5Ah". 3. Vary the "M01" bus data until the voltage to pin (39) of IC3001 to become the value as stated below.

  • Page 12: Chassis Layout

    29FL84M CHASSIS LAYOUT...

  • Page 13: Block Diagram

    29FL84M BLOCK DIAGRAM...

  • Page 14: Description Of Schematic Diagram

    29FL84M DESCRIPTION OF SCHEMATIC DIAGRAM WAVEFORM MEASUREMENT CONDITIONS: NOTES: 1. Photographs taken on a standard gated color bar 1. The unit of resistance "ohm" is omitted. signal, the tint setting adjusted for proper color. The (K=kW=1000W, M=MW) wave shapes at the red, green and blue cathodes of 2.

  • Page 15: Schematic Diagrams

    29FL84M SCHEMATIC DIAGRAM: CRT Unit 29FL84M...
  • Page 16 29FL84M SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 17 29FL84M...
  • Page 18 29FL84M SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 19 29FL84M...
  • Page 20 29FL84M SCHEMATIC DIAGRAM: MAIN-1 Unit...
  • Page 21 29FL84M...
  • Page 22 29FL84M PWB-A: MAIN Unit (Components Side)
  • Page 23 29FL84M PWB-A: MAIN Unit (Chip Parts Side)
  • Page 24 29FL84M PWB-B: CRT Unit (Wiring Side) PWB-C: 3-LINE Y/C Unit (Wiring Side) PWB-C: 3-LINE Y/C Unit (Chip Parts Side)

  • Page 25: Printed Wiring Board Assemblies

    PQ050RDA1SZ IC2001 RH-IXA418WJZZQ TMP88CS38BFG in USA: Contact your nearest SHARP Parts Distributor to order. IC2040 VHIKIA7045A-1+ KIA7045AP For location of SHARP Parts Distributor, Please call Toll- IC2101 VHIBR24L16F-1Y BR24L16F Free; 1-800-BE-SHARP IC3001 VHICXA2194Q-1Y CXA2194Q « MARK: SPARE PARTS-DELIVERY SECTION TRANSISTORS...

  • Page 26: Main Unit

    29FL84M « Ref. No. Part No. « Description Code Ref. No. Part No. Description Code L301 VP-XF8R2K0000Y Peaking,8.2mH PWB-A: DUNTKC290WEB9 L401 VP-XF100K0000Y Peaking,10mH L671 RCILZ1005CEZZ LZ1005CE MAIN UNIT L672 RCILZA058WJZZ Coil L701 RCILF0345CEZZ Coil DIODES L702 RCILF0345CEZZ Coil D412 RH-EX0614GEZZY Zener Diode 5.6V AB...
  • Page 27 29FL84M « Ref. No. Part No. Description Code Ref. No. Part No. « Description Code C733 VCKYPA2HB102K+ 1000p 500V Ceramic AA PWB-A: DUNTKC290WEB9 C734 VCKYPA2HB471K+ 470p 500V Ceramic AA C735 VCKYPA2HB471K+ 470p 500V Ceramic AA MAIN UNIT C736 VCKYCY1HF103ZY X 0.01...
  • Page 28 29FL84M « Ref. No. Part No. Description Code Ref. No. Part No. « Description Code RJ30 VRS-CY1JF000JY 1/16W M-Ox. PWB-A: DUNTKC290WEB9 RJ33 VRS-CY1JF000JY 1/16W M-Ox. MAIN UNIT RJ36 VRS-CY1JF000JY 1/16W M-Ox. RJ38 VRS-CY1JF000JY 1/16W M-Ox. RJ39 VRS-CY1JF000JY 1/16W M-Ox. CAPACITORS...
  • Page 29 29FL84M « « Ref. No. Part No. Description Code Ref. No. Part No. Description Code R670 VRS-CY1JF000JY 1/16W M-Ox. PWB-A: DUNTKC290WEB9 R684 VRD-RA2BE472JY 4.7k 1/8W Carbon R685 VRD-RA2BE822JY 8.2k 1/8W Carbon MAIN UNIT R686 VRD-RA2EE332JY 3.3k 1/4W Carbon R687 VRD-RA2BE103JY...
  • Page 30 29FL84M Ref. No. Part No. « Description Code Ref. No. Part No. « Description Code R2001 VRS-CY1JF102JY 1/16W M-Ox. PWB-A: DUNTKC290WEB9 R2004 VRS-CY1JF101JY 1/16W M-Ox. MAIN UNIT R2008 VRS-CY1JF102JY 1/16W M-Ox. R2010 VRS-CY1JF102JY 1/16W M-Ox. RESISTORS R2013 VRS-CY1JF682JY 6.8k 1/16W M-Ox.

  • Page 31: Crt Unit

    29FL84M Ref. No. Part No. « Description Code Ref. No. Part No. « Description Code D853 RH-EX0647GEZZY X Zener Diode, PWB-A: DUNTKC290WEB9 D854 VHD1SS119//-1Y X Diode MAIN UNIT D855 VHD1SS119//-1Y X Diode D862 VHD1SS119//-1Y X Diode RESISTORS D1502 VHD1SS119//-1Y X Diode [M-Ox.···...
  • Page 32 29FL84M Ref. No. Part No. « Description Code Ref. No. Part No. « Description Code C1444 VCKYCY1HB472KY X PWB-B: DUNTKA527WEW7 C1445 VCKYCY1HF103ZY X 0.01 50V Ceramic AA CRT UNIT C1446 VCCCCY1HH181JY X 180p 50V Ceramic AA C1447 VCKYCY1HF103ZY X 0.01 50V...

  • Page 33: Packing Parts

    29FL84M « « Ref. No. Part No. Description Code Ref. No. Part No. Description Code PACKING PARTS MISCELLANEOUS PARTS (NOT REPLACEMENT ITEM) VSP1206PB708A Speaker (L) SPAKCB386WJZZ PACKING CASE VSP1206PB708A Speaker (R) SPAKPA125WJZZ LAMIFOAM QCNW-B020WJZZ WIRE (CJ) SPAKXA180WJZZ PACKING FOAM QCNW-B021WJZZ...

  • Page 34: Packing Of The Set

    29FL84M PACKING OF THE SET Polyethylene Bag Operation Manual Infrared R/C Unit Batteries Polyethylene Sheet Buffer Material FRONT Packing Case Use tape to fix the top side of packing case. REAR Use 12 staples to fix the bottom side of packing case.
  • Page 35 QRC0003-M August. 2004 Modify : SEMEX Design and Production Information SHARP ELECTRONICA MEXICO S. A. DE C. V. Design : SEM Quality & Reliability Control Center Production : SEMEX Blvd. SHARP No. 3510 Parque Industrial Rosarito...

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