HCD-GN999D, MHC-GN999D, MHC-GN999DS - Sony Audio Service Manual (repair manual). Page 2

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Tuner section
FM stereo, FM/AM superheterodyne tuner

FM tuner section

Tuning range

87.5 – 108.0 MHz (50 kHz step)

Antenna

FM lead antenna

Antenna terminals

75 ohms unbalanced

Intermediate frequency

10.7 MHz

AM tuner section

Tuning range
Latin American models:

530 – 1,710 kHz
(with the interval set at 10 kHz)
531 – 1,710 kHz
(with the interval set at 9 kHz)

Saudi Arabian and Russian models:

531– 1,602 kHz
(with the interval set at 9 kHz)

Other models:

531 – 1,602 kHz
(with the interval set at 9 kHz)
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
Mexican model:

127 V AC, 60 Hz

Saudi Arabian model:

120 – 127 V, 120 – 220 V or 220 –
240 V AC, 50/60 Hz
Adjustable with voltage selector

Thai model:

220 V AC, 50/60 Hz

Other models:

120 V or 220 – 240 V AC, 50/60 Hz
Adjustable with voltage selector

Power consumption

160 W

Dimensions (w/h/d) (Approx.)

280 

× 326 x 385.5 mm

Mass (Approx.)

6.5 kg

Design and specifications are subject to change without notice.

When the self-diagnosis function is activated to 
prevent the system from malfunctioning, a 
5-character service number (e.g. C 13 50) with a 
combination of a letter and 4 digits appears on 
the TV screen and the front panel display. In this 
case, check the following table.

C 13

This disc is dirty.

  Clean the disc with a soft cloth .

C 31

The disc is not inserted correctly.

  Restart the system, then re-insert 

the disc correctly.

E XX
(XX is a 
number)

To prevent a malfunction, the system 
has performed the self-diagnosis 
function.

  Contact your nearest Sony dealer or 

local authorized Sony service 
facility and give the 5-character 
service number.
Example: E 61 10

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

the lead free mark due to their particular size)

Unleaded solder has the following characteristics.

• 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 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
occur 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.