Sanyo EM-N107AS Supplement Of Service Manual page 19

COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT
Measur Measur Measure the r
Measur Measur
with an ohm-meter on highest scale. with an ohm-meter on highest scale. with an ohm-meter on highest scale. with an ohm-meter on highest scale. with an ohm-meter on highest scale.
HIGH-VOL HIGH-VOL HIGH-VOL HIGH-VOL HIGH-VOLT T T T T AGE AGE AGE AGE AGE
CAP CAP ACITOR ACITOR
CAP CAP CAPACITOR ACITOR ACITOR
including including including including including
BLEEDER BLEEDER BLEEDER BLEEDER BLEEDER
RESISTOR RESISTOR
RESISTOR RESISTOR RESISTOR
Measur Measur Measure the r Measur Measur
with an ohm-meter on R x 10,000 scale. with an ohm-meter on R x 10,000 scale. with an ohm-meter on R x 10,000 scale.
with an ohm-meter on R x 10,000 scale. with an ohm-meter on R x 10,000 scale.
HIGH-VOL HIGH-VOLT T T T T AGE HIGH-VOL AGE AGE AGE
HIGH-VOL HIGH-VOL AGE
DIODE DIODE DIODE DIODE DIODE
Measur Measur Measure the voltage : Between test point TP-1, Measur Measur
TP-2 and Gr TP-2 and Gr
TP-2 and Gr TP-2 and Ground. (See Contr TP-2 and Gr
page 19). page 19). page 19). page 19). page 19).
CONTROL CONTROL CONTROL CONTROL CONTROL
CIRCUIT CIRCUIT CIRCUIT
CIRCUIT CIRCUIT
BOARD BOARD BOARD BOARD BOARD
- Pr - Pr - Pr - Proceed with the check of the Step-Down - Pr
T T T T T ransfor ransformer ransfor ransfor ransfor
values is dif values is differ values is dif
values is dif values is dif
CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE CHECKOUT PROCEDURE
e the resistance : Acr e the r e the r esistance : Acr esistance : Across two ter esistance : Acr
e the r esistance : Acr
Ohm-meter Ohm-meter
Ohm-meter Ohm-meter Ohm-meter
e the r e the resistance : Acr e the r e the r esistance : Acr esistance : Acr esistance : Acr esistance : Across two ter
Ohm-meter Ohm-meter
Ohm-meter Ohm-meter Ohm-meter
e the voltage : Between test point TP-1, e the voltage : Between test point TP-1, e the voltage : Between test point TP-1, e the voltage : Between test point TP-1,
ound. (See Contr ound. (See Contr
ound. (See Contr ound. (See Control Cir
NOTE NOTE NOTE NOTE NOTE
oceed with the check of the Step-Down oceed with the check of the Step-Down oceed with the check of the Step-Down oceed with the check of the Step-Down
mer mer mer, to see if any one of the measur mer , to see if any one of the measur , to see if any one of the measured , to see if any one of the measur , to see if any one of the measur
fer ferent fr fer ent fr ent fr ent from the specified values. om the specified values. om the specified values. om the specified values.
fer ent fr om the specified values.
oss two ter oss two terminals oss two ter minals minals minals Normal reading : Normal reading : Normal reading :
oss two ter minals Normal reading : Normal reading :
Abnormal reading : Abnormal reading : Abnormal reading : Abnormal reading : Abnormal reading :
Figure 7 Figure 7 Figure 7
Figure 7 Figure 7
oss two terminals oss two ter oss two ter oss two ter minals minals minals minals Normal reading : Normal reading : Normal reading : Normal reading : Normal reading :
- Some digital meter may show over - Some digital meter may show over
- Some digital meter may show over - Some digital meter may show over - Some digital meter may show over
Abnormal reading : Abnormal reading : Abnormal reading :
Abnormal reading : Abnormal reading :
Figure 8 Figure 8 Figure 8 Figure 8 Figure 8
ol Cir ol Cir cuit Boar cuit Boar d on d on
ol Circuit Boar ol Cir cuit Board on cuit Boar d on d on
ed ed ed ed
- 5 -
RESUL RESUL RESULT T T T T RESUL RESUL
Momentarily indicates several ohms, Momentarily indicates several ohms, Momentarily indicates several ohms, Momentarily indicates several ohms, Momentarily indicates several ohms,
and gradually r and gradually r etur etur ns to 10 meg-ohms. ns to 10 meg-ohms.
and gradually r and gradually retur and gradually r etur eturns to 10 meg-ohms. ns to 10 meg-ohms. ns to 10 meg-ohms.
Indicates continuity or 10 meg-ohms Indicates continuity or 10 meg-ohms Indicates continuity or 10 meg-ohms Indicates continuity or 10 meg-ohms Indicates continuity or 10 meg-ohms
fr fr fr fr from the beginning. om the beginning. om the beginning. om the beginning.
om the beginning.
Indicates about the middle position in Indicates about the middle position in Indicates about the middle position in
Indicates about the middle position in Indicates about the middle position in
one dir one dir one dir one direction (forwar one dir ection (forwar ection (forwar ection (forward dir ection (forwar d dir d dir d dir d direction) and ection) and ection) and ection) and
infinite ohms in the r infinite ohms in the r everse dir everse dir
infinite ohms in the r infinite ohms in the reverse dir infinite ohms in the r everse direction, everse dir
using meter which is pr using meter which is pr using meter which is pr using meter which is pr using meter which is provided with a ovided with a ovided with a ovided with a ovided with a
9 volt battery. 9 volt battery. 9 volt battery. 9 volt battery. 9 volt battery.
NOTE NOTE NOTE NOTE NOTE
even in a forwar even in a forwar even in a forwar even in a forwar even in a forward dir d dir d dir d direction because d dir ection because ection because ection because ection because
low measuring voltage of meter does low measuring voltage of meter does low measuring voltage of meter does low measuring voltage of meter does low measuring voltage of meter does
not allow the meter curr not allow the meter current to pass not allow the meter curr ent to pass ent to pass ent to pass
not allow the meter curr not allow the meter curr ent to pass
thr thr thr thr through the high voltage diode. ough the high voltage diode. ough the high voltage diode. ough the high voltage diode. ough the high voltage diode.
Indicates continuity or infinite ohms Indicates continuity or infinite ohms Indicates continuity or infinite ohms Indicates continuity or infinite ohms Indicates continuity or infinite ohms
in both dir in both dir ections. ections.
in both dir in both directions. in both dir ections. ections.
T T T T T est est est est est
TP-1 TP-1
TP-1 TP-1 TP-1
Point Point Point
Point Point
-5V -5V -5V
-5V -5V
V V V V V oltage oltage oltage oltage oltage
DC DC DC DC DC
ection) and
ection, ection,
ection, ection,
TP-2 TP-2
TP-2 TP-2 TP-2
-15V -15V -15V
-15V -15V
DC DC DC DC DC