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is part of the manual is very useful for repairing
Here are circuit diagrams
if there is damage, I recommend using this part of the
a complete list of circuit boards and components
This paper enable me, to bring this lovley Scope into Function.
Without this Page, i have no cance to make this finish.
Hans M. Knoll Germany
I used for first time this the wheat and am very thanked
This manual was exactly what i needed and could not find elsewhere. Price is not too high. Great !
ecelent I was reciver the service manual soon I fell so happy very complete 100% positive all by this store tanks atte Luis salazar
2-1-6. Adjusting Sequence Make the electrical adjustment in the following sequence.
Checking power supply
SERVO SYSTEM ADJUSTMENT
RF Switching Position Adjustment (MA-323 Board)
Servo system adjustment
Purpose: Adjust the interval between A ch and B ch of tape playback output. Improve the interchangeability with other tapes and sets. When it is out of order, the interval appears on the screen, the screen is disturbed. Mode Signal PB Alignment tape SP mode color bar CH1: VIDEO LINE OUT CH2: Pin 2 of CN501 (RF SWP) Oscilloscope 6.5 Â± 0.5 H (416 Â± 32 Âµsec) PAL 6.5 Â± 0.5 H (410 Â± 32 Âµsec) NTSC
Audio system adjustment
POWER SUPPLY ADJUSTMENT
Measurement Point Power Supply Check HS-921SF1 BOARD, ï£¶ SR-708 BOARD ï£¸ E-E Digital voltmeter Pin 9 of CN600 â10.3 Â±0.8 V ï£¶ ï£¸
Mode Measuring Instrument â10 V check Measurement Point Specified Value +6 V check Measurement Point Specified Value +13 V check Measurement Point Specified Value +35 V check Measurement Point Specified Value
Measuring Instrument Specified Value
Adjusting Method: 1) Connect MA-323 board JS140 to the GND for about 1 secont to activate the RF switching position adjustment mode. 2) Check appear âA Pâ on FL display. 3) Using the channel + and â buttons, adjust to 6.5 Â± 0.5 H. 4) Press the pause button.
Pin 7, 8 of CN600 5.9 Â± 0.2 V
Pin 2, 3 of CN600 13.3 Â± 0.5 V Pin 1 of CN600 38.0 Â± 3.0 V
V enargement Vertical sync. signal CH1 CH1 Approx. 1 Vp-p
Approx. 5 Vp-p
Checking Method: 1) Confirm that each voltage meets its specified value. 2-2-2. +6 V Adjustment HS-921SF1 BOARD, ï£¶ SR-708 BOARD ï£¸ ï£¶ ï£¸ REC or PB Digital voltmeter Pin 7, 8 of CN201 RV201 (HS-921SF1 BOARD) VR201 (SR-708 BOARD) 5.9 Â± 0.2 V
Mode Measuring Instrument Measurement Point Adjusting Element Specified Value
6.5 Â± 0.5 H (416 Â± 32 Âµsec) PAL (410 Â± 32 Âµsec) NTSC