Samsung CFTD2085X/SMS, Service Manual

Page: 32 / 112

Disassembly and Reassembly
3-22 Samsung Electronics
(Alignment and Adjustment)
1. Load alignment tape (Mono Scope) and play
back a 7KHz signal. (SP Mode)
2. Connect CH1 scope probe to J008 or J009
(Monitor Audio Out) CH2 scope probe to
TPM01 H’D SW Adjust sync to Channel 1.
3) Set the control pulse to 7 msec using the Fine
tracking b/- on the remote control.
(see Fig. (A),(B))
4) Connect CH1 scope probe to TPM01 Video
ENV.
5) Insert the adjusting driver into the X-position
adjusting gear and adjust the driver for
maximum envelope waveform.
Note:
Do not adjust the X-point using excessive force.
After turning the X-point adjusting screw (D)
counteerclock wise a little, perform the
adjustment and then tighten the screw.
(See Fig. 3-5-1)
7 msec
CH-2 PROBE
H'D SW
PULSE
CH-1 PROBE
CTL PULSE
-Time/div. ; 5 msec
Setting of Scope
- Volt/div. ; CH-1 = 0.1V
CH-2 = 0.2V
(A) Tracking Preset Adjustment (4HD/6HD)
SCOPE SETTINGS
CONTROL PULSE REMOVE
REMOTE
BUTTONS
_
+
_
+
A/V JACK
TPM01
MAIN PCB TOP View
GND
VIDEO Envelope
HD SW
Control
J008 J009
(B) Control Pulse Adjustment
(C) MAIN PCB VCR TP Point