Sony RM-PJ5 / VPL-CS21 / VPL-CX21 Service Manual ▷ View online
A
B
C
D
E
F
G
H
6-11
VPL-CX21/CS21
6-11
GB
GB
GB
-A SIDE-
SUFFIX: -21
GB
-B SIDE-
SUFFIX: -21
A
B
C
1
2
C701
C703
C704
C705
C706
C707
C710
C712
C713
C714
C715
C716
C717
C718
C801
C802
C805
C806
C807
C808
C813
C815
C816
C817
C818
C819
C820
C821
C822
C823
C824
C825
C826
C827
C828
C829
C830
C831
C832
C833
C834
C835
CN701
CN702
CN703
CN802
CN803
CN804
D707
D801
D802
D803
D804
D806
D808
D809
D810
D811
D812
D813
D819
IC701
IC704
IC801
IC802
IC804
IC805
L701
L702
L703
L704
L705
L801
L802
L803
L804
L805
Q701
Q702
Q703
Q704
Q705
Q706
Q707
Q708
Q801
Q802
Q803
Q805
Q806
R701
R702
R703
R708
R709
R713
R717
R718
R719
R721
R727
R728
R806
R807
R811
R812
R813
R814
R817
R818
R819
R820
R821
R822
R823
R824
R824
R825
R826
R827
R829
R830
R831
R833
R834
R838
R840
R844
R849
A
B
C
1
2
C702
C708
C709
C711
C719
C803
C804
C809
C810
C811
C812
C814
D701
D702
D703
D704
D705
D706
D805
D814
D818
D823
IC702
IC703
IC803
IC806
JL701JL702
JL703
JL704
JL705
JL706
JL707
JL708
JL709
JL710
JL711
JL712
JL713
JL714
JL715
JL716
JL717
JL718
JL719
JL720
JL721
JL722
JL802
JL803
JL804
JL805
JL806
JL807
JL808
JL809
JL810
JL811
JL812
JL819
JL820
R704
R705
R706
R707
R710
R711
R712
R714
R715
R716
R720
R722
R723
R724
R725
R726
R729
R730
R731
R801
R802
R802
R803 R804
R805
R808
R809
R809
R810
R815
R816
R828
R832
R835
R836
R837
R845
R846
R847
R848
GB BOARD
*:B SIDE
D701
* A1
D702
* B2
D703
* C2
D704
* B2
D705
* A1
D706
* A1
D707
B2
D801
B1
D802
B1
D803
B1
D804
B1
D805
* B1
D806
C1
D808
C1
D809
C1
D810
C1
D811
B1
D812
B1
D813
B1
D814
* B1
D818
* C2
D819
A2
D823
* C2
IC701
B2
IC702
* B2
IC703
* B2
IC704
B2
IC801
C2
IC802
B1
IC803
* B1
IC804
A1
IC805
B1
IC806
* A1
Q701
A2
Q702
A1
Q703
C2
Q704
B2
Q705
A1
Q706
A2
Q707
A1
Q708
B2
Q801
A1
Q802
C1
Q803
A1
Q805
A2
Q806
A2
VPL-CX21/CS21
SAFETY CHECK-OUT
After correcting the original service problem,
perform the following safety checks before
releasing the set to the customer :
perform the following safety checks before
releasing the set to the customer :
Check the metal trim, “metallized” knobs, screws,
and all other exposed metal parts for AC
leakage. Check leakage as described below.
and all other exposed metal parts for AC
leakage. Check leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to
earth ground and from all exposed metal parts to
any exposed metal part having a return to
chassis, must not exceed 0.5 mA. Leakage
current can be measured by any one of three
methods.
earth ground and from all exposed metal parts to
any exposed metal part having a return to
chassis, must not exceed 0.5 mA. Leakage
current can be measured by any one of three
methods.
1. A commercial leakage tester, such as the
Simpson 229 or RCA WT-540A. Follow the
manufacturers’ instructions to use these
instruments.
manufacturers’ instructions to use these
instruments.
2. A battery-operated AC milliammeter. The
Data Precision 245 digital multimeter is
suitable for this job.
suitable for this job.
3. Measuring the voltage drop across a resistor
by means of a VOM or battery-operated AC
voltmeter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range
are suitable. (See Fig. A)
voltmeter. The “limit” indication is 0.75 V, so
analog meters must have an accurate low-
voltage scale. The Simpson 250 and Sanwa
SH-63Trd are examples of a passive VOM
that is suitable. Nearly all battery operated
digital multimeters that have a 2 V AC range
are suitable. (See Fig. A)
To Exposed Metal
Parts on Set
Parts on Set
Fig A. Using an AC voltmeter to check AC leakage.
AC
voltmeter
(0.75V)
voltmeter
(0.75V)
Earth Ground
0.15
µ
F
1.5 k
Z
Printed in Japan
Sony Corporation
2006. 5 22
©2006
VPL-CX21 (SY)
VPL-CS21 (SY) E
9-968-272-01