Read Sony BMZ-K7D / CX-BK7 Service Manual online
CX-BK7
2
Notes on chip component replacement
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270 ˚C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous ra-
diation exposure.
other than those specified herein may result in hazardous ra-
diation exposure.
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 WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
OPERATION. REPLACE THESE COMPONENTS WITH
SONY PARTS WHOSE PART NUMBERS APPEAR AS
SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 ˚C higher than
• Unleaded solder melts at a temperature about 40 ˚C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C.
Caution: The printed pattern (copper foil) may peel away if the
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 ˚C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscou-s (sticky, less prone to flow)
than ordinary solder so use caution not to let solder bridges oc-
cur such as on IC pins, etc.
than ordinary solder so use caution not to let solder bridges oc-
cur such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
also be added to ordinary solder.
Tuner section
FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range
Russian model:
FM tuner section
Tuning range
Russian model:
65.0 - 74.0 MHz
87.5 - 108.0 MHz
87.5 - 108.0 MHz
Other models:
87.5 -108.0 MHz
Antenna
FM lead antenna
Antenna terminals
75 ohm unbalanced
Intermediate frequency
10.7 MHz
AM tuner section
Tuning range
Latin American models:
Tuning range
Latin American models:
530
− 1,710 kHz
(with the interval set at
10 kHz)
531
10 kHz)
531
− 1,710 kHz
(with the interval set at
9k Hz)
9k Hz)
Saudi Arabian model:
531
− 1,602 kHz (with the
interval set at 9 kH z)
Other models:
531
− 1,602 kHz (with the
interval set at 9 kHz)
530
530
− 1,710 kHz (with the
interval set at 10 kHz)
Antenna
AM loop antenna
Antenna terminals
External antenna terminal
Intermediate frequency
450 kHz
General
Power requirements
Euro/UK, Russian models: 230 V AC, 50/60 Hz
Australian model:
Euro/UK, Russian models: 230 V AC, 50/60 Hz
Australian model:
230
− 240 V AC, 50/60 Hz
Saudi Arabian model:
120
− 127 V, 220 V AC,
50/60 Hz
Adjustable with voltage
selector
Adjustable with voltage
selector
Other models:
120 V, 220 V or 230
−
240 V AC, 50/60 Hz
Adjustable with voltage
selector
Adjustable with voltage
selector
Power consumption
250 watts
0.4 watts (in ECO MODE)
0.4 watts (in ECO MODE)
Dimensions (w/h/d)
Approx. 211
× 379 ×
419 mm
Mass
Approx. 10.8 kg
Design and specifications are subject to change
without notice.
without notice.
This appliance is
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
classified as a CLASS 1
LASER product. This
label is located on the
rear exterior.
The following caution label is located inside the
apparatus.
apparatus.
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