Sync Sample Hold Pulse Width Adjustment; Mhz Vco Dc Set Adjustment - Sony CCU-TX7 Service Manual

4-3-3. SYNC Sample Hold Pulse Width
Adjustment
Equipment : Oscilloscope
To be extended : YD-26 board
Test point : TP8 (GND: E2)/YD-26 board
Adjusting point : 1RV5 (SYNC S/H)/YD-26 board
: T = 1.3 ± 0.1 µs
Specification
T
4-14
50%

4-3-4. 22.5 MHz VCO DC Set Adjustment

Note : Make sure that 45MHz frequency on the YM-15
board (CA-TX7/TX7P) should be correct.
Equipment : Oscilloscope
To be extended : YD-26 board
Test point : TP9 (GND: E2)/YD-26 board
Adjusting point : 1RV6 (VCO DC SET)/YD-26 board
: A = 0 ± 30 mV dc
Specification
A
GND
CCU-TX7 (E)/V1