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3-8-10. MIC 1 Level Adjustment
Rank:
B
Equipment:
Oscilloscope, Audio generator
To be extended:
AT-88 board
Preparation
• Extend the AU-177 board (BVP camera) with extension
board EX-439.
• S1003 (MIC 1 GAIN) switch/AT-88 board → "MIN"
Test point:
TP10 (GND: E12)/AT-88 board
Adjusting point:
1RV201 (MIC 1 LEVEL)/AT-88
board
Adjustment Procedure
1. Feed the 1 kHz, 270 mV p-p sine-wave to pin 66 (X),
pin 65 (Y) and pin 67 (GND)/extension board (BVP
camera).
...Fig-3 (Refer to 3-1-4. Audio connection.)
2. Adjust 1RV201 (MIC 1 LEVEL) on the AT-88 board
so that the signal level at TP10 (GND: E12) on the
AT-88 board is 1100 ±50 mV p-p.
CCU-700 A
CCU-700AP
REMOTE MODE-1
1100 ± 50 mV p-p
E1000
S1001
MODE1
MODE2
S1002
-
5
-
12
AT
(PANEL SIDE)
3-8. TRIAX Interface System Adjustment
TTL
CONTACT
S2822
S2821
S1006 S1007
POWER
POWER
TTL
S2792
S2791
REMOTE MODE-2
POWER POWER
RV2432
TP22
S2081
TP1001
S2061
TP23
E2
LV1 LV21
TP1
TP2
RV81
LV81
TP21
RV61
LV61
E20
RV41
LV41
TP45
E1
TP44
TP42
TP46
E11
S2491
RV2341
ENG SELECT
RV2342
S1005
S1004
S2301 S2062
S1003
CCU PAINT
INCOM
+12
+5
MIC LEVEL
SELECT
PGM
REAR
NORM
NORM
MIX
INCOM MIC
MIN
MIN
-
-
CH
1
CH
2 CLEAR
DYNAMIC
ENG
PROD
2W
CARBON
SIDE
LEVEL
TONE
PRIVATE
AT-88 BOARD (COMPONENT SIDE)
G TALLY
Y TALLY
RV2431
RV2310
TP47
RV2382
E12
TP48
S2082 S2083
S2341
RV2301
RV2302
TP15
TP13
TP10
TP17
RV501
TP9
TP12
TP7
S201
RV401
RV101
RV301
TP5
T201
T501
S301
T301
TP6
T401
RV201
TP4
TP16
TP11 TP8
TP14
LV101
TP3
S2241
PROD SELECT
TP43
RV2451
RV2452
RV2491
TP40
RV2211
E10
RV2212
RV2241
ENG
PROD
RTS
CANCEL
RTS
2W
CANCEL
CANCEL
2W
2W
CANCEL
LEVEL
3-45
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