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Great and quick support. The maual was exactly what I was looking for and my problem
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Very good service Within one day i received a pdf of the users manual and electric circuits so I was able to measure the different voltages in the printed circuit and find out the fault Payment was also reliable and easy.Without the manual i could not have repaired.So thanks to "Search for a manual"
you are doing great job guys.....my father ask me to find out the schematics of Sony KV25R1D to sort out the problem ..(he was electrical technician, and excperianced with TV and simillar stuff). finally he found the cause and change all necessary parts....now he has got working old dog..and is very happy!!... thank you all.. NB..he also saved the repair cost.
Perfect. Received my manual within 24 hours. Clear scan of the manual I needed. No problem.
Playback Level Check (MA-316 Board) Playback Alignment tape : SP mode color bar portion Video LINE OUT terminal Oscilloscope A=1.0 Â± 0.1Vp-p (75â¦ terminated)
Signal Alignment Measurement point Measuring instrument Specified value
2-5-1. ACE Head Adjustment Refer to the âVHS mechanical adjustment manual 11). 2-5-2. Mode Signal Measurement point E-E Output Level Check E-E
2-6. â (9-921-647-
ADJUSTMENT PARTS LOCATION DIAGRAM
RP-231 BOARD (Conductor side)
1 CN261 5 1 2 CN341 RF/AF Switching Position
400Hz, â7.5dBs : J480 (LINE IN 2) on FR-128 board J500 (AUDIO OUT), CN500 (LINE 1) Audio level meter J500 : â7.5 Â± 2.0dBs, CN500 : â6.3 Â± 2.0dBs
[Check Method] 1) Check that the playback level satisfies the specified value.
Measuring instrument Specified value
[Check Method] 1) Input signal of 400Hz and â7.5dBs to J480 (LINE IN 2). 2) Check that the audio output level is the specified value. 2-5-3. Mode Signal Measurement point Measuring instrument Overall Output Level and Distortion Factor Check Self-record playback 400Hz, â7.5dBs : J480 (LINE IN 2) on FR-128 board CN500 (LINE 1) Pin 3 (L), Pin 1 (R) Audio level meter and Distortion meter Playback Level: â6.3 Â± 3dBs Distortion: 4.0% or less MA-316 BOARD (Conductor side)
20 21 J500 AUDIO OUT CN500 LINE 1 IC530 D702 VCC 12V 25 40 41 IC201 80 Q211 64 65 24 1 SYNC AGC White/Dark Clips REC Y Level REC C Level 4 1 Tuner 30V 2 1
2-5. AUDIO SYSTEM ADJUSTMENT â¢ For the adjustment of the audio system, perform in the SP mode if there is no special notes. Use the alignment tape. [Connecting Instruments]
(CN500 or J500) Audio line OUTPUT L/R (J480) Audio line INPUT L/R 600 â¦ Attenuator VTR
Audio level meter or distortion meter 47 kâ¦
[Check Method] 1) Input signal of 400Hz and â7.5dBs to J480 (LINE IN 2). 2) Record signal. 3) Playback the recorded portion. 4) Check that the output level is â6.3 Â± 3dBs. 5) Check that the distortion factor is 4.0% or less. 2-5-4. Overall Noise Level Check Self-record playback No signal (Insert a shorting plug into the Audio LINE IN terminal) CN500 (LINE 1) Pin 3 Audio level meter (IHF-A weighing filter is used) â 45.5dBs or less
Fig. 6-2-11 â¢ Adjust in the SP mode if there is no special indications. â¢ Perform the adjustment setting the switch on the following positions. â¢ INPUT SELECT switch ........................................... LINE IN 2
[Adjustment Method] 1. ACE head adjustment.....Refer to the VHS mechanical adjustment manual . 2. E-E output level check 3. Overall Output level and distortion factor check 4. Overall noise level check.
Mode Signal Measurement point Measuring instrument Specified value
E X'tal OSC
[Check Method] 1) Record. 2) Playback recorded portion. 3) Check that noise level is â 45.5dBs or less.