10 PCX

Vi-H513(N> 1/3

2-2. VIDEO CIRCUrT ADJUSTMENT

Before making the foliowing adjustments, Section 2-1. SERVO CIRCUIT ADJUSTMENT should be completed. 2-2-1, TEST EOUIPMENT AND STANDARDS RECHJIRED

Color Bar Signal Generator	Color bar signal with 100% white level (EIA color bar signal)
Oscilloscope	Vertical sensitivity: 5 mV/DIV, external trigger Band width: morę than 10 MHz
AlignmentTape	NC-S1 (VHJ-0005) or VNC-1 (SVJ-00028): SP modę, color bar, 1 kHz {Color bar signal waveform is described below. Refer to Fig. 2.2.1.)
Brank Tape	VHS-type cassette tape
Oscilloscope Probe	Input capacity : less than 25 pF (10:1) less than 40 pF (1:1) Covering frequency: DC— 40 MHz (10:1) DC- 30 MHz (1:1)
Frequency Counter	8 significant digits
Signal Generator	3.58 MHz CW signal
Alignment Relay Jig	VHJ-0066:7-wire fiat cable for VM-1 PWB assembly

ALIGNMENT TAPE COLOR BAR SIGNAL

2-2-2. ADJUSTMENT RELAY JIG

'Burst Signal H.Sync Signal

COLOR BAR SIGNAL WAVEFORM (NC-S1)

Fig. 2.2.1

WNV-TCP

(75%)

& !c 5	i o o \ł-	Cyan |	Green	Magenta |	Red	Q) 3 CD
-1	Q	100% White			Black

COLOR BAR PATTERN (NC-S1) ON MONITOT TV

Fig. 2.2.2

Connect the fiat cable end from the cylinder assembly to the VM-1 PWB assembly using the relay jig to provide simple repairing and adjustment of the VM-1 PWB assembly, as shown in Fig.2.2.3. Further, when adjusting the VM-1 PWB assembly, be surę to make contact an end of shield case with bracket of the VM-1 PWB assembly to maintain the shield effect. If the VM-1 PWB assembly does not contact, there is insufficient ground and no proper playback image can be obtained.

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