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The manual is an excellent reproduction with complete schematics, made troubleshooting and repair a simple process.
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Up to now you are the BEST! Prompt-efficient and so reasonable ! I have been after SONY service manual for quite some time !Thank you very much ! I can recomend your service to
all my collegagues ! V.Bergfield .
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This is a very good quality print (scan) of the original SONY service manual. The original from Sony is on very thin paper. Nevertheless it is very clear and sharp and excellent readable. I'm very satisfied to have now this rare document. I've looking for it many years (infrequent). It contains very detailed circuit diagrams, exploded views, part lists, PCB view with good readable connection lines. Very recommended.
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A complete manual with all the needed details of calibrations and service instructions about the radio receiver.
A big deal.
Many thanks !
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Fast delivery and good quality copy. To be recommended
H � Size, E/W correction
Receive test signal, adjust R425 to make Horizontal size right, and adjust R426 to make E/W correction right.
V-amplitude¡¢ linearity ¡¢ S-correction¡¢ center adjustment
1) Receive test signal, enter into the V.POSI item, adjust the value to make V -center and the CRT's geometric center is in accordance. Enter into the V.SIZE item, adjust the value to make the overscan is ¡� 10%, enter into the V.COMP item, adjust the value to 7. 2) Receive test signal, enter into the V.LINE item, adjust the value to make the upper and lower grid� (on the screen) vertical distance equal. Enter into the V.SC item, adjust the value to make s the vertical distance from upper grid to middle screen is equal to the vertical distance from lower grid to middle screen. 3) Repeat the above steps 1) & 2) to make the V -center¡¢ V-amplitude¡¢ V-linearity at the optimum mode.
White balance¡¢ screen ¡¢ sub-brightness adjustment
A. Dark balance¡¢ screen ¡¢ sub-brightness adjustment 1) Receive test signal, adjust the TEST MODE menu's G.BIAS¡¢ B.BIAS to 0, SUB BRIGHT to 64, BLACK STR=0, BLUE GAMMA=2, R/G GAMMA=0. Adjust the analog of brightness¡¢ contrast¡¢ color in the picture menu to 0. 2) Connect the Oscilloscope's probe to R gun on the CRT board, adjust the R.BIAS & SUB BRIGHT in the TEST MODE menu to make the R signal's cut-off level as 180V. 3) Receive a station which has no signal, turn the SCREEN potentiometer on the FBT counterclockwise to minimum, adjust the V.KILL in the factory menu to 1. 4) Adjust the SCREEN potentiameter clockwise until a slight bright horizontal line appears on the screen. 5) Press the VOL¡ø button, set V.KILL=0 to make vertical circuit works normal. /ª¢ 6) Respectively adjust G.BIAS & B.BIAS until X=0.281, Y=0.311 (9300¡ã K+27). B. Bright balance adjustment 1) Receive more than 60dB¦� signal. 2) Set the brightness¡¢ contrast to maximum, color to minimum, adjust R.DRIVE¡¢ G.DRIVE¡¢ B.DRIVE to obtain even white balance. C. White balance check and re-alignment Since the adjustment of the bright & dark balance affects each other, please check and adjust the bright & dark balance according to the above steps A¡¢ repeatedly until even white balance can be B obtained when the contrast control changes from minimum to maximum. The TEST MODE menu's SIGNAL item can be used to check. Note: SIGNAL = 0 normal SIGNAL = 1 100% BLACK LEVEL SIGNAL = 2 100% WHITE LEVEL SIGNAL = 3 60% WHITE LEVEL
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