JVC TM-1500PS

TM-1500PS |
MAIN PCB (2)
Measuring Adjustment
Adjustment of PATTERN R269 (SUB Continue running for 30 minutes or more.
SUB BRIGHT GENERATOR BRIGHT) e This adjustment should be performed after
[Adjustment of CUTOFF].
e Set the CONTRAST and BRIGHT VRs on the front
panel to the clicking position.
1. Input the color bar signal.
2. Turn the V. HOLD VR to display the vertical flyback
time and let it remain at a standstill.
3. Adjust the SUB BRIGHT VR (R269) in front of the
position where the vertical flyback time becomes
black (In this case, be careful so that it will not
become too bright).
4. Adjust the vertical synchronism with the V. HOLD
VR.
Vertical flyback time
Standard setting | PATTERN
of CONTRAST GENERATOR
e This adjustment should be performed after
[Adjustment of SUB BRIGHT]
e@ Set the CONTRAST and BRIGHT VRs on the front
panel to the clicking position.
1. Input the color bar signal (including 100% white
signal).
2. Turn the CHROMA VR on the front panel and turn
the screen to black and white.
3. Connect the oscilloscope between TP-47B and TP-E
on the CRT socket PCB.
4. Adjust the SUB CONT. VR (R265) so that the
voltage of the waveform becomes 47.5Vg.w.
5. Release the CHROMA VR on the front panel to
return the screen to color.
OSCILLOSCOPE
PATTERN
GENERATOR
Adjustment of
CHROMA
R345 (Sub PAL
Chroma)
R348 (Sub
Chroma)
e@ This adjust should be performed after[Standard
setting of contrast].
@ Tum the CHROMA VR on the front panel to the click
position.
1. Turn the SYSTEM SW to SECAM.
2. Input the SECAM color bar.
3. Connect TP-47B of the CRT socket PCB to the
OSCILLOSCOPE
1 uu
at ! Te rsee pave oscilloscope.
MAIN PCB 4. Turn R348(Sub Chroma) to adjust the white and biue
levels.
5. Return the SYSTEM SW to PAL.
6. Turn R345(Sub PAL Chroma) to set the difference of
white and blue to OV.
CRT socket PCB
w Y Cy G Mg R B
14 (No.50343)