Table of Contents
Advertisement
6-3. DM-89 Board Replacement
(9) Enter A33 : DM VR 2 of the maintenance mode.
(10) Connect the oscilloscope's CH-2 to TP3/DM-89(E-1). GND: E702/DM-89(D-1)
(11) METAL Y, Main adjustment
(i) Adjust the level difference at 12 MHz use 2 MHz as the reference.
Adjustment point: A33 : DM VR 2 : MAIN METAL-Y-A
Specification: DNW-A22:
DNW-A22P: B = +3.5 ± 0.5 dB
[dB]
B
0
2
DNW-A22
(ii) Set the data value of A33 : DM VR 2 : MAIN METAL-Y-B to the identical data value as
MAIN METAL-Y-A.
(12) To exit A33 : DM VR 2, press the MENU button once.
(13) Enter A34 : DM VR 3 of the maintenance mode.
(14) METAL Y, Sub adjustment
For DNW-A22
Confirm that the data value of A34 : DM VR 3 : SUB METAL-Y-A and SUB METAL-Y-B are AF.
If not, set them to AF.
For DNW-A22P
(i) Connect the oscilloscope's CH-2 to TP2/DM-89(E-1). GND: E702/DM-89(D-1)
(ii) Adjust the level difference at 12 MHz use 2 MHz as the reference.
Adjustment point: A34 : DM VR 3 : SUB METAL-Y-A
Specification:
[dB]
C
0
2
(iii) Set the data value of A34 : DM VR 3 : SUB
METAL-Y-B to the identical data value as SUB
METAL-Y-A.
(15) To exit A34 : DM VR 3, press the MENU button once.
(16) Disconnect the shorting clip from TP4/DM-89(E-1).
6-32
B = +8.0 ± 0.5 dB
A(*)MAG: 1 dB
12
[MHz]
C = +16.5 ± 1.0 dB
A(*)MAG: 2 dB
12
[MHz]
[dB]
B
0
2
DNW-A22P
A
B
C
D
RV704
RV703
OFF
D902
ON
E303
TP8
TP6
S501
S901
OFF
TP7
E702
TP5
E901
TP705
TP704
E701
TP703
TP702
RV501
RV301 RV302
TP701
RV507
RV702
TP305
TP700
TP306
RV701
TP208
RV401
RV303
RV304
RV402
S302
RV406
S301
TEST
NOR
RV407
TEST
NOR
E302
TP303
TP304
RV405
TP403
TP404
TP302
TP300
E301
DM-89 Board (Side A)
A(*)MAG: 1 dB
12
[MHz]
DM-89
E
F
G
ON
RV504
E105
TP3
TP1
RV503
A No.
LOTNO,
S NO,
1
TP4
TP2
TP3
2
TP505
TP503
TP504
3
TP502
E501
RV502
TP501
RV506
TP500
TP105
TP106
4
TP506
RV305
RV105
RV102
RV104
RV306
RV106
RV107
RV307
RV101
RV103
RV202
5
RV308
RV201
RV108
E104
E102
TP104
S102
TP103
TEST
NOR
S101
RV211
RV212
TP102
6
NOR
TEST
E103
TP202
RV205
TP204
TP100
TP203
E101
E902
7
DNW-A22/A22P
Advertisement
Table of Contents
