Sony HCD-GX30 Service Manual page 2

HCD-GX30/RG22/RG33
AM tuner section
Tuning range
Pan-American models: 530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,710 kHz (with the
interval set at 9 kHz)
European and Middle Eastern models:
531 – 1,602 kHz (with the
interval set at 9 kHz)
Other models: 530 – 1,710 kHz (with the
interval set at 10 kHz)
531 – 1,602 kHz (with the
interval set at 9 kHz)
Antenna AM loop antenna
Antenna terminals External antenna terminal
Intermediate frequency 450 kHz
General
Power requirements
North American models: 120 V AC, 60 Hz
European models: 230 V AC, 50/60 Hz
Australian model: 230 – 240 V AC,
50/60 Hz
Argentine models: 220 V AC, 50/60 Hz
Mexican models: 120 V AC, 60 Hz
Other models: 120 V, 220 V or
230 – 240 V AC,
50/60 Hz
Adjustable with voltage
selector
Power consumption
Canadian models:
MHC-GX30: 125 watts
European models:
MHC-RG33: 125 watts
0.5 watts (at the Power
Saving Mode)
MHC-RG22: 105 watts
0.5 watts (at the Power
Saving Mode)
Other models:
MHC-RG33: 125 watts
MHC-RG22: 105 watts
Approx. 280 × 325 × 412 mm
Dimensions (w/h/d)
Mass
North American models:
HCD-GX30: Approx. 9.0 kg
European models:
HCD-RG33: Approx. 9.0 kg
HCD-RG22: Approx. 8.5 kg
Other models:
HCD-RG33: Approx. 9.5 kg
HCD-RG22: Approx. 9.0 kg
Supplied accessories: Remote Commander (1)
Batteries (2)
AM loop antenna (1)
FM lead antenna (1)
Front speaker pads (8)
Design and specifications are subject to change
without notice.
2
SAFETY CHECK-OUT
After correcting the original service problem, perform the
following safety checks 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
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.
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 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
0.15 µF
1.5 kΩ
Fig. A. Using an AC voltmeter to check AC leakage.
AC
Voltmeter
(0.75 V)
Earth Ground