Read Sony MHC-V5 Service Manual online
MHC-V5
2
NOTES ON CHIP COMPONENT REPLACEMENT
•
•
Never reuse a disconnected chip component.
•
Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
aged by heat.
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, and all other exposed metal parts for AC leakage.
Check leakage as described below.
After correcting the original service problem, perform the follow-
ing safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, “metallized” knobs,
screws, 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 (500 microamperes.).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
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 (500 microamperes.).
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.
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is 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)
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)
1.5 k
Ω
0.15
μF
AC
voltmeter
(0.75 V)
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
Except for customers in the
USA
USA
This appliance is classified as a CLASS 1
LASER product. This marking is located
on the rear exterior.
LASER product. This marking is located
on the rear exterior.
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK
0 OR DOTTED LINE
WITH MARK
0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS
REPLACE THESE COMPONENTS WITH SONY PARTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
License and Trademark Notice
WALKMAN® and W ALKMAN® logo
are registered trademarks of Sony
Corporation.
MPEG Layer-3 audio coding
technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is either a
registered trademark or tr ademark
of Microsoft Corporation in
the United States and/or other
countries.
This product is protected by
certain intellectual property rights
of Microsoft Corporation. Use or
distribution of such technology
outside of this product is prohibited
without a license fr om Microsoft or
an authorized Microsoft subsidiar y.
The BLUETOOTH® wor d mark and
logos are registered trademarks
owned by Bluetooth SIG, Inc. and
any use of such marks by Sony
Corporation is under license . Other
trademarks and tr ade names ar e
those of their respective owners.
The N Mark is a tr ademark or
registered trademark of NFC F orum,
Inc. in the United States and in other
countries.
Android™ is a trademark of Google
Inc.
Google Play™ is a trademark of
Google Inc.
iPhone and iP od touch are
trademarks of Apple Inc., registered
in the U.S. and other countries. App
Store is a ser vice mark of Apple Inc.
“Made f or iPod” and “Made f or
iPhone” mean that an electr onic
accessory has been designed
to connect specifically to iPod
or iPhone, respectively, and has
been certified by the developer
to meet Apple per formanc e
standards. Apple is not responsible
for the operation of this device
or its compliance with saf ety and
regulatory standar ds. Please note
that the use of this a ccessory with
iPod or iPhone may aff ect wireless
performanc e.
All other trademarks and r egistered
trademarks ar e of their respective
holders. In this manual, ™ and ®
marks ar e not specified.
are registered trademarks of Sony
Corporation.
MPEG Layer-3 audio coding
technology and patents licensed
from Fraunhofer IIS and Thomson.
Windows Media is either a
registered trademark or tr ademark
of Microsoft Corporation in
the United States and/or other
countries.
This product is protected by
certain intellectual property rights
of Microsoft Corporation. Use or
distribution of such technology
outside of this product is prohibited
without a license fr om Microsoft or
an authorized Microsoft subsidiar y.
The BLUETOOTH® wor d mark and
logos are registered trademarks
owned by Bluetooth SIG, Inc. and
any use of such marks by Sony
Corporation is under license . Other
trademarks and tr ade names ar e
those of their respective owners.
The N Mark is a tr ademark or
registered trademark of NFC F orum,
Inc. in the United States and in other
countries.
Android™ is a trademark of Google
Inc.
Google Play™ is a trademark of
Google Inc.
iPhone and iP od touch are
trademarks of Apple Inc., registered
in the U.S. and other countries. App
Store is a ser vice mark of Apple Inc.
“Made f or iPod” and “Made f or
iPhone” mean that an electr onic
accessory has been designed
to connect specifically to iPod
or iPhone, respectively, and has
been certified by the developer
to meet Apple per formanc e
standards. Apple is not responsible
for the operation of this device
or its compliance with saf ety and
regulatory standar ds. Please note
that the use of this a ccessory with
iPod or iPhone may aff ect wireless
performanc e.
All other trademarks and r egistered
trademarks ar e of their respective
holders. In this manual, ™ and ®
marks ar e not specified.
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