B&K_CRTData维修电路原理图.pdf

《B&K_CRTData维修电路原理图.pdf》由会员分享，可在线阅读，更多相关《B&K_CRTData维修电路原理图.pdf（64页珍藏版）》请在收音机爱好者资料库上搜索。

1、 -1- GENERAL NOTES Use these notes when setting up to test any testable CRT. These notes are applicable to all B use isolation transformer. For G1-K leakage proceed to RESTORE-(A.) STEP 2: SET CUTOFF Rotate FUNCTION switch in SET CUTOFF position. Meter may read zero or slightly above or below zero.

2、Adjust each G2 control to ADD ONE DIVISION to reading of corresponding meter. Use Red G2 control for black and white tubes. If max G2 does not raise pointer place G2 switch in HIGH position. STEP 3: TEST Rotate FUNCTION switch to TEST position. 1. EMISSION: If all guns read in good region, emission

3、are OK. If any gun reads BAD, proceed to RESTORE-( C ). 2. TRACKING: Push and hold TRACKING button and adjust TRACKING control to set highest gun at SET TRACKING mark on meter. Tracking is OK if the other two guns read in yellow area. Release button to return to emission test. If tracking is bad, pr

4、oceed to RESTORE-(B). 3. LIFE: Observe emission levels. Push and hold LIFE button until readings stabilize. The less emission drops, the longer the life expectancy. The stabilized readings should remain in the GOOD region to assure customer satisfaction. If any gun indicates BAD during LIFE test, pr

5、oceed to RESTORE-(B). 4. FOCUS: Push FOCUS test button. FOCUS OK lamp will glow if connection is good. Open focus connection cannot be repaired. CAUTION RadioFans.CN 收音机爱 好者资料库 -3- RESTORING THE PICTURE TUBE RESTORE A-REMOVE SHORTS 1. If G1-K leakage is indicated in STEP 1 but G1-K SHORT lamp does n

6、ot light with FUNCTION switch RESTORE position, follow STEP B-CLEANBALANCE 2. If G1-K Short lamp lights when function switch is in RESTORE position, press REMOVE SHORTS button and release. Lamp will no longer glow if short is removed. Several operations may be necessary. Wait about 10 seconds betwee

7、n operations. Repeat STEP 2 and STEP 3 after shorts are removed. B CLEAN BALANCE 1. Select gun to be cleaned when: G1-K leakage is indicated in STEP 1 but G1-K SHORTS lamp does not glow in RESTORE position. Emission GOOD but too low to track with other guns. Emission BAD in LIFE test. 2. Set FUNCTIO

8、N switch to RESTORE 3. Place REJUVENATE/CLEANBALANCE switch to CLEANBALANCE. Wait 20 seconds. 4. Push RESTORE button below meter for gun selected. Pointer will rise immediately. Hold button until pointer begins to fall. Release button when pointer falls to 0.2. NOTE: If pointer does not continue to

9、fall observe the G1-K SHORTS lamp. If it glows remove shorts before proceeding. 5. Return to TEST. Wait for reading to stabilize. Repeat STEP 2 and STEP 3. 6. Repeat procedure if further improvement is required. If still unsuccessful proceed to STEP C-REJUVENATE. C- REJUVENATE 1. Select gun to be re

10、stored when: Emission is in BAD region. TRACKING CANNOT BE CORRECTED BY CLEANBALANCE 2. Set FUNCTION switch to REJUVENATE. 3. Place REJUVENATE/CLEANBALANCE switch to REJUVENATE. Wait 20 seconds. 4. Push RESTORE button directly under meter of lowest emission gun. Pointer will immediately rise. Hold b

11、utton until pointer begins to fall. Release immediately when pointer reaches0.5 (bad area). Note: If pointer does not continue to fall, observe the G1-K SHORT lamp. If it glows, remove short before proceeding. 5. Return to TEST. Wait for readings to stabilize. Repeat STEP 2 and STEP 3. If emission i

12、s now GOOD but further improvement of any gun is required for TRACKING or LIFE TEST use, CLEANBALANCE. If emission is still BAD repeat Rejuvenate. RadioFans.CN 收音机爱 好者资料库 -4- CONDENSED INSTRUCTIONS MODELS 470 AND 480 SIMPLIFIED TEST PROCEDURE Do not apply power to the CRT chassis at any time during

13、the test of any CRT. Completely discharge High Voltage Anode supply of CRT before connecting it to the CRT tester STEP 1: Set-Up Set all controls fully counterclockwise. Find proper adapter and heater voltage in SET-UP chart. Select HTR RANGE. Plug in tube and power cord. Rotate FUNCTION switch to S

14、ET HEATER . Adjust HEATER control until meter reads voltage specified in SET- UP CHART. STEP 2: LEAKAGE Rotate FUNCTION switch to HTR-LEAKAGE. Meter reading anywhere in YELLOW area of meter scale is acceptable. Turn GUN SELECTOR to test all guns. Excessive H-K leakage cannot be repaired, use isolati

15、on transformer. Rotate FUNCTION SWITCH TO G1 LEAKAGE. Meter reading anywhere in YELLOW area of meter scale is acceptable. Turn GUN SELECTOR switch to test all guns. For excessive leakage proceed to RESTORE A. STEP 3: SET G1 BIAS Rotate FUNCTION switch to SET- G1 voltage Set G1 Bias to 50V unless the

16、re is a * (asterisk) in SET- UP CHART (see General Notes). STEP 4: SET CUTOFF Rotate FUNCTION switch in SET CUTOFF-VOLTAGE. Adjust each G2 control until meter rises ONE DIVISION. Use GUN SELECTOR switch and corresponding G2 control with color tubes. STEP 5: TEST Rotate FUNCTION switch to read EMISSI

17、ON. Emission is okay if meter reads in GOOD region. Use GUN SELECTOR switch for other guns. If any gun reads BAD, proceed to RESTORE C. Rotate FUNCTION switch to SET TRACKING. Use GUN SELECTOR switch to select highest reading gun. Adjust TRACKING control to make meter read at SET TRACKING mark on me

18、ter scale. Tracking is okay if other guns read in YELLOW area on meter scale. If tracking is BAD, proceed to RESTORE B. CAUTION RadioFans.CN 收音机爱 好者资料库 -5- RESTORING THE PICTURE TUBE RESTORE A- REMOVE SHORTS- Rotate FUNCTION switch to REMOVE SHORTS. 1. IF G1 Leakage in STEP 2- B reads full scale or

19、higher. A. Set GUN SELECTOR to shorted gun. B. Press and hold pushbutton for 2 seconds C. Rotate FUNCTION switch to G1 LEAKAGE and observe if short is removed. Several operations may be necessary. B- CLEAN BALANCE 1. Select gun to be cleaned when: Excessive G1 leakage is indicated in STEP2 but meter

20、 does not read full scale. Emission GOOD but too low to track with other guns. 2. Rotate FUNCTION switch to CLEANBALANCE. Wait 20 seconds. 3. Select gun to be cleaned, press and hold pushbutton. Meter will rise immediately. Release button and check for G1-K short. STEP 2- B 4. Return to READ EMISSIO

21、N. Wait for reading to stabilize. Check all guns. Repeat STEP 4 and STEP 5 5. Repeat procedure if further improvement is required. If still unsuccessful proceed to C- REJUVENATE. C- REJUVENATE 1. Select gun to be restored when: Emission is in BAD region. TRACKING CANNOT BE CORRECTED BY CLEANBALANCE

22、2. Rotate FUNCTION switch to REJUVENATE. Wait 20 seconds. 3. Select gun to be restored. Press and hold pushbutton. Meter will rise immediately. Release pushbutton when meter falls into bad area. Note: If pointer does not fall release button and check for G1-K STEP2-B 4. Return to READ EMISSION. Wait

23、 for readings to stabilize. Check all guns. Repeat STEP 4 AND STEP 5 If emission is now GOOD, but further improvement of any gun is required for TRACKING, use CLEANBALANCE. If emission is still BAD, then repeat REJUVENATE. RadioFans.CN 收音机爱 好者资料库 COLOR Type Heater CR/CA Type Heater CR/CA Type Heater

24、 CR/CA - 6 - 6ABP1 6.3 29 6ABP55 6.3 29 6ABP56 6.3 29 9VACP22 6.3 15 9VBAP22 6.3 25 10VABP22# 6.3 4 10VADP22# 6.3 4 10VAHP22 6.3 16 10VLYP22 6.3 18 11SP221 3.8 12 11WP221 3.8 12 12DCP22 6.3 3 12VADP22 6.3 3 12VAHP22 6.3 3 12VAJP22 6.3 3 12VALP22 6.3 3 12VARP22 6.3 3 12VASP22 6.3 3 12VATP22 6.3 3 12V

25、BEP22 6.3 3 13BEP22 6.3 18 13GP22 6.3 3 13JP22 6.3 3 13LP22 6.3 3 13MP22 6.3 3 13VAEP22 6.3 3 13VAFP22 6.3 16 13VAGP22 6.3 16 13VAHP22 6.3 16 13VAKP22 6.3 1 13VAMP22 6.3 18 13VATP22 6.3 14 13VAUP22 6.3 18 13VAVP22 6.3 16 13VAWP22 6.3 16 13VAYP22 6.3 24 13VBAP22 6.3 20 13VBEP22 6.3 25 13VBFP22 6.3 25

26、 13VBGP22 6.3 16 13VBHP22 6.3 25 13VBJP22 6.3 24 13VBLP22 6.3 23 13VBMP22 6.3 20 13VBNP22* 6.3 20 13VBRP22 6.3 25 13VBSP22 6.3 24 13VBTP22 6.3 16 13VBUP22 6.3 25 13VBWP22 6.3 20 13VCAP22 6.3 25 13VCBP22 6.3 25 14AFP22 6.3 3 14AQP22* 6.3 3 14BCP22 6.3 2 14BEP22 6.3 3 14BFP22 6.3 3 14VABP22 6.3 3 14VA

27、CP22 6.3 3 14VADP22 6.3 3 14VAEP22 6.3 3 14VAFP22 6.3 3 14VAGP22 6.3 3 14VAHP22 6.3 3 14VAJP22 6.3 3 14VAKP22 6.3 3 14VALP22 6.3 3 14VAMP22 6.3 3 14VANP22 6.3 3 14VAQP22 6.3 3 15ABP22 6.3 3 15ACP22 6.3 3 15AEP22 6.3 3 15AFP22 6.3 3 15AGP22 6.3 3 15AHP22 6.3 3 15AJP22 6.3 3 15AP22 6.3 3 15FP22 6.3 3

28、15KP22 6.3 3 15LP22 6.3 3 15MP22 6.3 4 15NP22 6.3 3 15QP22 6.3 3 15RP22 6.3 3 15SP22 6.3 3 15TP22 6.3 3 15UP22 6.3 3 15VACP22* 6.3 3 15VADP22 6.3 1 15VAEP22 6.3 18 15VAFP22 6.3 1 15VAGP22 6.3 16 15VAHP22 6.3 16 15VALP22 6.3 1 15VAMP22 6.3 1 15VARP22 6.3 25 15VASP22 6.3 16 15VATP22 6.3 23 15VAWP22 6.

29、3 25 15VAYP22 6.3 24 15VAZP22* 6.3 25 15WP22 6.3 3 15XP22 6.3 3 15YP22 6.3 4 15ZP22 6.3 3 16CBP22 6.3 3 16CDP22 6.3 3 16CSP22 6.3 3 16CYP22 6.3 3 16DAP22 6.3 3 16VABP22 6.3 3 16VACP22 6.3 3 16VADP22 6.3 3 16VAEP22 6.3 3 16VAFP22 6.3 3 16VAHP22 6.3 3 16VAKP22 6.3 3 16VAMP22 6.3 3 16VANP22 6.3 3 16VAS

30、P22 6.3 3 16VATP22 6.3 3 16VAUP22 6.3 3 16VAWP22 6.3 4 16VAXP22 6.3 3 16VBDP22 6.3 4 16VBEP22 6.3 3 16VBFP22 6.3 3 16VBGP22 6.3 3 16VBHP22 6.3 3 16VBMP22 6.3 4 16VBSP22 6.3 4 16VEMP22 # 6.3 4 16VEP22 6.3 3 17EJP22 6.3 2 17ENP22 6.3 2 17ETP22 6.3 3 17EVP22 6.3 3 17EXP22 6.3 4 17EZP22 6.3 3 17FAP22 6.

31、3 3 17FBP22 6.3 3 17FEP22 6.3 3 17FGP22 6.3 3 17FHP22 6.3 3 17FJP22 6.3 4 17FKP22 6.3 3 17FVP22* 6.3 3 17JP22 6.3 4 17VABP22 6.3 3 17VACP22 6.3 3 17VADP22 6.3 3 17VAEP22 6.3 3 17VAFP22 6.3 3 17VAGP22 6.3 3 17VAHP22 6.3 27 17VAJP22 6.3 3 17VAKP22 6.3 3 17VALP22 6.3 3 17VAMP22 6.3 1 17VANP22 6.3 1 17V

32、AQP22 6.3 16 17VARP22 6.3 3 17VASP22 6.3 3 17VATP22 6.3 1 17VAUP22 6.3 3 17VAWP22 6.3 3 17VAXP22 6.3 16 17VAYP22 6.3 18 17VAZP22 6.3 18 17VBAP22 6.3 16 17VBCP22 6.3 16 17VBDP22 6.3 18 17VBGP22 6.3 16 17VBHP22 6.3 16 17VBJP22 6.3 1 17VBLP22 6.3 18 RadioFans.CN 收音机爱 好者资料库 COLOR Type Heater CR/CA Type

33、Heater CR/CA Type Heater CR/CA - 7 - 17VBMP22 6.3 24 17VBNP22 6.3 20 17VBQP22 6.3 16 17VBRP22 6.3 16 17VBSP22 6.3 16 17VBTP22 6.3 24 17VBUP22 6.3 16 17VBWP22 6.3 16 17VBXP22 6.3 16 17VBYP22 6.3 24 17VBZP22 6.3 24 17VCDP22 6.3 16 18VABP22 6.3 3 18VACP22 6.3 3 18VADP22 6.3 3 18VAEP22 6.3 3 18VAFP22 6.

34、3 3 18VAGP22 6.3 3 18VAHP22 6.3 3 18VAJP22 6.3 3 18VAKP22 6.3 3 18VALP22 6.3 3 18VAMP22 6.3 3 18VANP22 6.3 1 18VAQP22 6.3 3 18VARP22 6.3 3 18VASP22 6.3 3 18VATP22 6.3 3 18VAWP22 6.3 3 18VAXP22 6.3 3 18VAZP22 6.3 3 18VBAP22 6.3 3 18VBCP22 6.3 3 18VBDP22 6.3 3 18VBEP22 6.3 3 18VBFP22 6.3 3 18VBGP22 6.

35、3 3 18VBHP22 6.3 3 18VBJP22 6.3 3 18VBKP22 6.3 3 18VBMP22 6.3 3 18VBNP22 6.3 3 18VBRP22 6.3 3 18VBSP22 6.3 3 18VBTP22 6.3 3 18VBUP22 6.3 3 18VBWP22 6.3 3 18VBXP22 6.3 3 18VDMP22 6.3 3 19CD1000 6.3 3 19CHP22 6.3 3 19CJP22 6.3 3 19EWP22 6.3 3 19EXP22 6.3 3 19EYP22 6.3 3 19FMP22 6.3 3 19FXP22 6.3 3 19G

36、DP22 6.3 3 19GLP22 6.3 3 19GSP22 6.3 3 19GVP22 6.3 3 19GWP22 6.3 3 19GXP22 6.3 3 19GYP22 6.3 3 19GZP22 6.3 3 19HBP22 6.3 3 19HCP22 6.3 3 19HDP22 6.3 3 19HFP22 6.3 3 19HJP22 6.3 3 19HKP22 6.3 3 19HLP22 6.3 3 19HMP22 6.3 3 19HNP22 6.3 3 19HQP22 6.3 3 19HRP22 6.3 3 19HSP22 6.3 3 19HTP22 6.3 3 19HVP22 6

37、.3 3 19HWP22 6.3 3 19HXP22 6.3 3 19HYP22 6.3 3 19JAP22 6.3 3 19JBP22 6.3 3 19JCP22 6.3 3 19JDP22 6.3 3 19JEP22 6.3 3 19JFP22 6.3 3 19JGP22 6.3 3 19JHP22 6.3 3 19JKP22 6.3 3 19JLP22 6.3 3 19JMP22* 6.3 3 19JNP22 6.3 3 19JQP22 6.3 3 19JRP22 6.3 1 19JSP22 6.3 3 19JTP22* 6.3 23 19JUP22* 6.3 23 19JVNP22 6

38、.3 22 19JVP22 6.3 3 19JWP22 6.3 3 19JXP22 6.3 1 19JYP22 6.3 3 19JZP22 6.3 3 19KAP22 6.3 3 19KBP22 6.3 3 19KCP22 6.3 3 19KDP22 6.3 3 19KEP22 6.3 3 19KFP22 6.3 3 19KGP22 6.3 3 19KHP22 6.3 3 19KJP22 6.3 3 19KLP22 6.3 3 19VABP22 6.3 2 19VACP22 6.3 2 19VADP22 6.3 14 19VAEP22 6.3 3 19VAFP22 6.3 3 19VAGP22

39、 6.3 3 19VAJP22 6.3 3 19VAKP22 6.3 3 19VAMP22 6.3 3 19VANP22 6.3 3 19VAQP22 6.3 3 19VATP22 6.3 3 19VAUP22 6.3 3 19VAWP22 6.3 3 19VAXP22 6.3 3 19VAYP22 6.3 3 19VAZP22 6.3 3 19VBAP22 6.3 3 19VBCP22 6.3 3 19VBDP22 6.3 3 19VBFP22 6.3 3 19VBGP22 6.3 3 19VBHP22 6.3 3 19VBJP22 6.3 3 19VBKP22* 6.3 3 19VBLP2

40、2 6.3 1 19VBQP22 6.3 3 19VBRP22 6.3 3 19VBSP22 6.3 3 19VBUP22 6.3 3 19VBWP22 6.3 3 19VCAP22 6.3 3 19VCBP22 6.3 3 19VCDP22* 6.3 16 19VCEP22 6.3 3 19VCFP22 6.3 3 19VCNP22 6.3 3 19VCQP22 6.3 3 19VCRP22 6.3 3 19VCSP22 6.3 3 19VCTP22 6.3 3 19VCWP22 6.3 1 19VCXP22 6.3 3 19VCYP22 6.3 3 19VDBP22 6.3 27 19VD

41、CP22 6.3 16 19VDFP22 6.3 3 19VDJP22 6.3 24 19VDKP22 6.3 1 19VDLP22 6.3 1 19VDMP22 6.3 3 19VDNP22 6.3 3 19VDQP22 6.3 3 19VDRP22 6.3 1 19VDSP22 6.3 3 19VDTP22 6.3 3 19VDUP22 6.3 3 19VDWP22 6.3 3 19VDXP22 6.3 3 19VDYP22 6.3 3 19VDZP22 6.3 3 19VEAP22 6.3 3 19VEBP22 6.3 3 19VECP22 6.3 3 19VEDP22 6.3 3 19

42、VEFP22 6.3 3 19VEGP22 6.3 3 19VEHP22 6.3 3 19VEJP22 6.3 18 RadioFans.CN 收音机爱 好者资料库 COLOR Type Heater CR/CA Type Heater CR/CA Type Heater CR/CA - 8 - 19VEKP22 6.3 3 19VELP22 6.3 3 19VEQP22 6.3 1 19VESP22 6.3 3 19VETP22 6.3 3 19VEUP22 6.3 3 19VEWP22 6.3 3 19VEXP22 6.3 3 19VEZP22 6.3 3 19VFAP22 6.3 3 1

43、9VFBP22 6.3 16 19VFCP22 6.3 20 19VFJP22 6.3 16 19VFKP22 6.3 3 19VFLP22 6.3 1 19VFMP22 6.3 1 19VFQP22 6.3 3 19VFRP22 6.3 1 19VFSP22 6.3 3 19VFXP22 6.3 16 19VGBP22 6.3 1 19VGCP22 6.3 20 19VGKP22 6.3 1 19VGLP22 6.3 16 19VGMP22 6.3 1 19VGNP22 6.3 16 19VGQP22 6.3 1 19VGRP22 6.3 16 19VGTP22 6.3 16 19VGWP2

44、2 6.3 1 19VGZP22 6.3 20 19VHBP22 6.3 3 19VHCP22 6.3 3 19VHDP22 6.3 1 19VHFP22 6.3 18 19VHJP22 6.3 3 19VHKP22 6.3 18 19VHNP22 6.3 16 19VHSP22 6.3 20 19VHTP22 6.3 22 19VHWP22 6.3 25 19VHXP22 6.3 16 19VHYP22 6.3 24 19VHZP22 6.3 25 19VJBP22 6.3 25 19VJCP22 6.3 25 19VJDP22 6.3 20 19VJFP22 6.3 23 19VJKP22

45、 6.3 23 19VJLP22 6.3 23 19VJMP22 6.3 23 19VJNP22 6.3 20 19VJP22 6.3 24 19VJQP22 6.3 25 19VJRP22 6.3 20 19VJSP22 6.3 3 19VJTP22 6.3 23 19VJUP22 6.3 23 19VJVP22* 6.3 23 19VJWP22 6.3 24 19VJXP22 6.3 25 19VJYP22 6.3 25 19VKDP22 6.3 23 19VKEP22 6.3 23 19VKFP22 6.3 24 19VKGP22 6.3 24 19VKHP22 6.3 16 19VKJ

46、P22 6.3 16 19VKKP22 6.3 3 19VKLP22 6.3 16 19VKMP22 6.3 23 19VKNP22 6.3 3 19VKP22* 6.3 24 19VKRP22 6.3 3 19VKSP22 6.3 23 19VKTP22 6.3 3 19VKUP22 6.3 23 19VKWP22 6.3 25 19VKXP22 6.3 20 19VKYP22# 6.3 28 19VKZP22 6.3 16 19VLAP22 6.3 3 19VLBP22 6.3 25 19VLCP22 6.3 25 19VLDP22 6.3 23 19VLEP22 6.3 25 19VLG

47、P22 6.3 23 19VLHP22 6.3 25 19VLJP22 6.3 23 19VLNP22 6.3 24 19VLQP22 6.3 20 19VLRP22 6.3 22 19VLSP22 6.3 25 19VLTP22 6.3 23 19VLUP22 6.3 24 19VLWP22 6.3 23 19VLXP22 6.3 23 19VLYP22 6.3 25 19VLZP22 6.3 23 19VMAP22 6.3 23 19VMBP22 6.3 23 19VMCP22 6.3 23 19VMDP22 6.3 20 19VMEP22 6.3 20 19VMFP22 6.3 23 1

48、9VMGP22 6.3 23 19VMHP22 6.3 23 19VMJP22 6.3 23 19VMKP22 6.3 23 19VMLP22 6.3 23 19VMNP22 6.3 23 19VMP22 6.3 23 19VMRP22 6.3 23 19VMSP22 6.3 23 19VMTP22 6.3 25 19VMYP22 6.3 23 19VMZP22 6.3 23 19VNAP22 6.3 23 19VNBP22 6.3 23 19VNCP22 6.3 23 19VNDP22 6.3 23 19VNEP22 6.3 23 19VNFP22 6.3 20 19VNGP22 6.3 23 19VNJP22 6.3 23 19VP22 6.3 3 20VABP22 6.3 3 20VACP22 6.3 3 20VADP22 6.3 3 20VAEP22 6.3 3 20VAFP22 6.3 3 20VAGP22 6.3 3 20VAHP22 6.3 3 20VAJP22 6.3 3 20VAKP22 6.3 2 20VALP22 6.3 3 20VAMP22 6.3 3 20VANP22 6.3 3 20VARP22 6.3 3 20VASP22 6.3