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6-3. DM-89 Board Replacement
6-3-2. Electrical Adjustments
Adjustment Items
No. Item
0
Preparation
1
Initial data setting
2
EQ RF output level adjustment
METAL Y
METAL C
OXIDE C
OXIDE Y
Data save
3
Cosine equalizer adjustment
METAL Y
Group delay 1RV101/DM-89, 1RV102/DM-89
Main
Sub
METAL C
Group delay 1RV301/DM-89, 1RV302/DM-89
Main
Sub
OXIDE C
Group delay 1RV303/DM-89, 1RV304/DM-89
Main
Sub
OXIDE Y
Group delay 1RV104/DM-89, 1RV103/DM-89
Main
Sub
OMC DC offset
Data Save
4
Cosine equalizer provisional adjustment
n
This provisional adjustment explains how to adjust without using the network analyzer as
opposed to adjustment (No. 3) using the network analyzer.
Perform this provisional adjustment only when the network analyzer is not available for an
urgent maintenance. Be sure to perform the adjustment (No. 3) using the network analyzer at
a later date.
OMC; Over-Modulation Compensation circuit
6-20
Adjustment point
All data of A3 : BETACAM PB ADJUST
A30 : EQ VR : RF GAIN METAL-Y-A
A30 : EQ VR : RF GAIN METAL-Y-B
A30 : EQ VR : RF GAIN METAL-C-A
A30 : EQ VR : RF GAIN METAL-C-B
A30 : EQ VR : RF GAIN OXIDE-C-A
A30 : EQ VR : RF GAIN OXIDE-C-B
A30 : EQ VR : RF GAIN OXIDE-Y-A
A30 : EQ VR : RF GAIN OXIDE-Y-B
A3F : NV-RAM CONTROL
A33 : DM VR 2 : MAIN METAL-Y-A
A33 : DM VR 2 : MAIN METAL-Y-B
A34 : DM VR 3 : SUB METAL-Y-A
A34 : DM VR 3 : SUB METAL-Y-B
A33 : DM VR 2 : MAIN METAL-C-A
A33 : DM VR 2 : MAIN METAL-C-B
A34 : DM VR 3 : SUB METAL-C-A
A34 : DM VR 3 : SUB METAL-C-B
A33 : DM VR 2 : MAIN OXIDE-C-A
A33 : DM VR 2 : MAIN OXIDE-C-B
A34 : DM VR 3 : SUB OXIDE-C-A
A34 : DM VR 3 : SUB OXIDE-C-B
(RV103 is not equipped on the DM-89 board of LOT Nos. 407 and higher.)
A33 : DM VR 2 : MAIN OXIDE-Y-A
A33 : DM VR 2 : MAIN OXIDE-Y-B
A34 : DM VR 3 : SUB OXIDE-Y-A
A34 : DM VR 3 : SUB OXIDE-Y-B
A35 : DM VR 4 : OMC DC METAL-Y
A35 : DM VR 4 : OMC DC METAL-C
A35 : DM VR 4 : OMC DC OXIDE-Y
A35 : DM VR 4 : OMC DC OXIDE-C
A3F : NV-RAM CONTROL
Remarks
TP100/DM-89
TP300/DM-89
TP300/DM-89
TP100/DM-89
TP104/DM-89
TP3/DM-89
DNW-A22: Set the data to AF
DNW-A22P: TP2/DM-89
TP304/DM-89
TP7/DM-89
DNW-A22: Set the data to 70
DNW-A22P: TP6/DM-89
TP304/DM-89
TP7/DM-89
TP6/DM-89
TP104/DM-89
TP3/DM-89
TP2/DM-89
Set the data to E4
Set the data to D0
(Continue)
DNW-A22/A22P
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