Fukuda Denshi FCP-7101, Service Manual

Page: 65 / 170

Maintenance
3 - 31
Item
Description
(Acceptance
standard)
Measurement
value
Judgement
Remarks
(Repair
required
Normal condition (0.1m or less) mA
OK
・
NG
1. Enclosure leakage
current
Single fault condition (0.5mA or less) mA
OK ・ NG
Normal condition (0.01mA or less) mA
OK ・ NG
2. Patient leakage
current I
Single fault condition (0.05mA or less) mA
OK
・
NG
3. Patient leakage
current III
Single fault condition (0.05mA or less) mA
OK
・
NG
Normal condition (0.01mA or less) mA
OK
・
NG
4. Patient
measurement
current (AC)
Single fault condition (0.05mA or less) mA
OK ・ NG
(Standard sensitivity) × 1 (10 ± 0.2 mm or less) mm OK ・ NG
× 1/2 (5 mm ± 5% or less) mm OK ・ NG
×
1/4 (2.5 mm
±
5% or less) mm OK
・
NG
1. Sensitivity
×
2 (20 mm
±
5% or less) mm OK
・
NG
2. Time constant
37% (3.2 to 3.84 sec.) sec
OK
・
NG
0.14Hz
(90
％
or more)
％
OK
・
NG
75Hz
(90 ％ or more) ％ OK ・ NG
150Hz
(70 ％ or more) ％ OK ・ NG
3. Frequency
characteristics
10Hz
・
10mm
amplitude
100
％
All bonds
(105
％
or less)
％
OK
・
NG
4. Common mode
rejection
60 Hz, 20 V, RMS sine wave,
sensitivity 2
4 mm P-P or less
at sensitivity 2
mm
OK
・
NG
5. Counter electrode
voltage
±
550 mV imposed DC voltage (10 mm
±
5
％
or less)
％
OK
・
NG
6. Internal noise
27k
Ω
input short, sensitivity 2
0.4 mm P-P or less
at sensitivity 2
(Noise : 20
μ
V or less) mm
OK
・
NG
5 mm/s
( ± 3 ％ or less) ％ OK ・ NG
10 mm/s
(
±
3
％
or less)
％
OK
・
NG
12.5 mm/s
( ± 3 ％ or less) ％ OK ・ NG
25 mm/s
( ± 3 ％ or less) ％ OK ・ NG
Elec
tri
c per
form
ance
/char
ac
terist
ics inspe
ction
7. Recording speed
50 mm/s
(
±
3
％
or less)
％
OK
・
NG
Overall judgement
OK
・
NG
Machine type Model Serial No.
Location installed Date purchased
Date inspected
Inspector Approval
( )
( )