Ikegami HTM-1990R M, Service Manual

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1-B-15
(c) VR201 [HD GB BAL]
VR203 [HD GR BAL]
VR202 [SD GB BAL]
VR204 [SD GR BAL]
For TP201 (G-1), Adjust the green matrix of HDTV and SDTV when the chroma preset data is 50%.
Adjust 100%
HDTV
(100% COLOR BAR)
Adjust 75%
SDTV
(SMPTE COLOR BAR)
(d) VR205 [G O/S]
VR405 [B O/S]
VR605 [R O/S]
For the test points TP201 (G-1), TP401 (B-1), TP601 (R-1), Adjust the pedestals of the signals to 0V.
Adjust
0V
TP201 (G-1)
Adjust
0V
TP401 (B-1)
Adjust
0V
TP601 (R-1)
(e) VC201
VC401
VC601
For the test points TP201 (R-1), TP401 (B-1), TP601 (R-1), Input the sweep signal to Y and adjust the
Frequency Characteristic to within
± 1dB up to 30 MHz .
60Hz 30MHz
-1dB +1dB Standard
(f) VR207 [CONT O/S-G]
VR407 [CONT O/S-B]
VR607 [CONT O/S-R]
For the test point TP202 (G-2), TP402 (B-2), TP602 (R-2), Adjust the values so that there is no leakage for
the GBR signals when the contrast control is adjusted manually to min. Adjust the same level for the level
change of the GBR signals when the contrast control is set to about 10%.
TP202 (G-2) TP402 (B-2) TP602 (R-2)
When control is about 10% When control is min
GBR leak zero Level same for GBR
Raise gradually