Summary of the content on the page No. 1
CHASSIS
SERVICE MANUAL BG-1S (D)
MODEL COMMANDER DEST. CHASSIS NO.
MODEL COMMANDER DEST. CHASSIS NO.
KV-G21L3 RM-883 ME SCC-J35Y-A
TRINITRON ® COLOR TV
Summary of the content on the page No. 2
KV-G21L3 RM-883 SPECIFICATIONS Note Power requirements 110-240 V AC, 50/60 Hz Power consumption (W) Indicated on the rear of the TV Television system B/G Color system PAL, PAL 60, SECAM, NTSC4.43, NTSC3.58 (AV IN) Channel coverage VHF: E2 to E12/UHF: E21 to E69/CATV: S01 to S03, S1 to S41 Audio output (speaker) 3W Inputs Antenna: 75 ohms VIDEO IN jacks: phono jacks Video: 1 Vp-p, 75 ohms Audio: 500mVrms, high impedance Outputs Earphone jack: minijack MONITOR OUT jacks: phono jacks Video: 1 Vp-p,
Summary of the content on the page No. 3
KV-G21L3 RM-883 TABLE OF CONTENTS Section Title Page Section Title Page 1. GENERAL ........................................................................ 4 5. CIRCUIT ADJUSTMENTS 5-1. Adjustment With Commander ................................. 19 2. DISASSEMBLY 5-2. Adjustment Method ................................................. 20 2-1. Rear Cover Removal ................................................ 11 5-3. A Board, Adjustment After IC003 2-2. A Board Removal ..........................
Summary of the content on the page No. 4
KV-G21L3 RM-883 – 4 – SECTION 1 The operating instructions mentioned here are partial abstracts from the Operating Instructions Manual. The page numbers of the Operating GENERAL Instruction Manual remain as in the manual. 3 2 TV SYSTEM AUTO PROGR 1 p KV-J21MF3 B/G I D/K M TV SYSTEM AUTO PROGR 2 3 AUDIO VIDEO VIDEO IN MONITOR OUT
Summary of the content on the page No. 5
KV-G21L3 RM-883 – 5 – Getting Started Connecting optional equipment Connections You can connect optional audio/video equipment to your TV such as a VCR, multi disc player, camcorder, video game or stereo system. Connecting video equipment using video input jacks p KV-G21L3 to antenna socket Rear of TV AUDIO VIDEO to antenna Connecting a VHF antenna or a combination VHF/UHF antenna output VIDEO — 75-ohm coaxial cable (round) VCR IN MONITOR OUT Attach an optional IEC antenna connector to the 75-oh
Summary of the content on the page No. 6
KV-G21L3 RM-883 – 6 – Connecting audio/video equipment using MONITOR OUT jacks p KV-G21L3 to antenna socket Presetting channels manually using the Rear of TV Presetting channels buttons on the TV Audio system AUDIO VIDEO to antenna 1 Press MANUAL PROGR. output VIDEO VCR IN or 2 Press PROGR +/– on the remote commander MONITOR OUT until the required program position appears on the screen. to video MONITOR OUT and audio inputs You can preset up to 100 TV channels in numerical 3 Press TV SYSTEM unti
Summary of the content on the page No. 7
KV-G21L3 RM-883 – 7 – Presetting channels automatically Presetting channels manually using the If you are not satisfied with the picture using the remote commander remote commander and sound quality + or – SELECT You may be able to further improve the picture and 1 Press SELECT until “TV SYSTEM” appears sound quality by using fine tuning as below: (KV-J21MF3 only). SELECT 1 Press POWER to turn on the TV. 1 Select the program position you want to adjust. POWER 2 Press SELECT until “MANUAL PROGRAM
Summary of the content on the page No. 8
KV-G21L3 RM-883 – 8 – Operations • The last TV program position or video input just before the TV Turning off the TV Displaying on-screen information turns into standby mode will appear when the TV is turned on Watching the TV using the Wake Up Timer. • If no buttons or controls are pressed for more than two hours To turn off the TV temporarily Press DISP/REVEAL. after the TV is turned on using the Wake Up Timer, the TV Press POWER on the remote commander. The The program position, local system
Summary of the content on the page No. 9
KV-G21L3 RM-883 – 9 – Adjusting the sound and picture settings Using the Child Lock Watching the picture Adjusting the Adjusting the sound 1 Press SELECT until the item you want to feature in wide mode and pictur picture e adjust appears. SELECT Each time you press SELECT, the screen changes as follows: ÷ 0 SOUND You can adjust the display mode accordingly to fit the You can prevent a child from watching certain program MODE (Operative for COLOR BRIGHT HUE NTSC signal only) positions by using th
Summary of the content on the page No. 10
KV-G21L3 RM-883 – 10 – Additional Information No picture No sound Troubleshooting /Press POWER. /Check the antenna connection. /Check the VCR connections. /Check the power cord connection. If you have any problems, read this manual again and /Check the standby mode. check the countermeasure for each of the symptoms Good picture listed below. Noisy sound If the problem persists, contact your nearest authorized service center or dealer. Snowy picture Noisy sound /Check the TV SYSTEM setting (KV-J2
Summary of the content on the page No. 11
KV-G21L3 RM-883 – 11 – SECTION 2 DISASSEMBLY 2-1. REAR COVER REMOVAL 2-3. SERVICE POSITION A board 2 Two screws (BVTP 4×16) 3 One screw (BVTP 3×16) 1 Two screws (BVTP 4×16) 2-2. A BOARD REMOVAL Lever Lever A board
Summary of the content on the page No. 12
1 DEMAGNETIZATION COIL 2 TENSION SPRING PICTURE TUBE ill2-02-0-1_ES29
Summary of the content on the page No. 13
KV-G21L3 RM-883 – 13 – 2-6. PICTURE TUBE REMOVAL b 3 C board b 4 Deflection yoke 2 A board 5 Four screws (Tapping screws) 2 Using a thumb press down then pull up the rubber cap firmly in the direction indicated by the arrow b. c 1 Anode cap Anode button Anode Button Cushion 3 When one side of the rubber cap is separated from the anode button, the anode-cap can be removed by turning up the rubber cap and pulling it up in the direction of the arrow c. •REMOVAL OF ANODE-CAP • HOW TO HANDLE AN ANODE
Summary of the content on the page No. 14
KV-G21L3 RM-883 SECTION 3 SET-UP ADJUSTMENTS • The following adjustments should be made when a complete Perform the adjustments in the following order realignment is required or a new picture tube is installed. 1. Beam Landing • These adjustments should be performed with rated power 2. Convergence supply voltage unless otherwise noted. 3. Focus 4. White Balance Controls and switch should be set as follows unless otherwise noted: Note : Test Equipment Required: PICTURE control ..................
Summary of the content on the page No. 15
KV-G21L3 RM-883 • Operation of V.STAT magnet. 3-2. CONVERGENCE If the V.STAT magnet is moved in the direction of the a and Preparation : b arrows, the red, green and blue points move as shown • Before starting this adjustment, adjust the focus, horizontal size below. and vertical size. • Minimize the brightness setting. 1 • Provide dot pattern. a ab B B (1) Horizontal and Vertical Static Convergence b b GG R R Center dot R G 2 B R G B a a R G B V.STAT Magnet b b B G R 3 a
Summary of the content on the page No. 16
KV-G21L3 RM-883 (2) Dynamic Convergence Adjustment Preparation : • Before starting this adjustment, adjust the horizontal static 3. Move the deflection yoke as shown in the figure below and convergence and the vertical static convergence. optimize the convergence. 1. Slightly loosen the deflection yoke screws. 4. Tighten the deflection yoke screws. 2. Remove the deflection yoke spacer. 5. Install the deflection yoke spacer. R B B G R G G R G B B R B G R R G
Summary of the content on the page No. 17
KV-G21L3 RM-883 DATA 3-3. FOCUS ADJUSTMENT Adjust FOCUS control on the flyback transformer for the best 09 RDR 1 F SERVICE focus. Adjustment Item Item number 09 RDR 1 F WRITE MUTING 0 Executes the writing FOCUS SCREEN (NOT USED) FLYBACK TRANSFORMER (T851) Note: Screen VR is not use. a. AN ITEM OF ADJUSTMENT 3-4. G2 (SCREEN) AND WHITE BALANCE ADJUSTMENTS Item Adjustment Initial DATA Note 1. G2 (SCREEN) ADJUSTMENT (RV701) number item 09 RDR 25 WHITE POINT R 1) Set the PICTURE and BRIGHTNESS to nor
Summary of the content on the page No. 18
KV-G21L3 RM-883 SECTION 4 SELF DIAGNOSIS FUNCTION If no acknowledgement is returned from a device which is turned "ON", the device has a problem. In this case, one of the LED's responding to the problem device will flicker a defined number of times. Flickering is operated by lighting the LED's for 60ss each time. The flickering frequency responding to each failed device is shown below. NONVOLATILE — Y/C JUNGLE — — — MEMORY Device Flickering 1 — 3 — — — Frequency All the devices are checked one a
Summary of the content on the page No. 19
KV-G21L3 RM-883 SECTION 5 CIRCUIT ADJUSTMENTS 5-1. ADJUSTMENTS WITH COMMANDER Service adjustments are made with the RM-883 that comes with [1], [4] Raise/lower the service item number this unit. [3], [6] Raise/lower the data [MUTING] Writes Entering service mode [0] Executes the writing With the unit on standby [7], [0] All data becomes the values in memory ↓ [8], [0] All user control goes to the standard state DISPLAY [5], [0] Service data initialization (Be sure not to use ↓ usually). 5 [2], [
Summary of the content on the page No. 20
KV-G21L3 RM-883 5-2. ADJUSTMENT METHOD Item Number 08 This explanation uses V-SHIFT as an example. Use the same method for Items Number 00-33. Use [1] and [4] to select the adjustment item, use [3] and [6] to adjust, write with 1. Select 08 V-SHIFT with the [1] and [4] buttons. 2. Raise/lower the data with the [3] and [6] buttons. [MUTING], then execute the write with [0]. 3. Select the optimum state. (The standard is 0F for PAL reception.) 4. Write with the [MUTING] button. (The SERVICE display
