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Main unit
AUDIO POWER SPECIFICATIONS
POWER OUTPUT AND TOTAL
HARMONIC DISTORTION:
(LBT-LCD7Di The United States model only)
With 6 ohm loads, both channels driven,
from 120 – 10,000 Hz; rated 85 watts per
channel minimum RMS power, with no
more than 1% total harmonic distortion
from 800 milliwatts to rated output.

Amplifi er section
The following measured at AC 120 V, 60 Hz
(North American model)
The following measured at AC 230 V, 50/60 Hz
(European model)
The following measured at AC 240 V, 50/60 Hz
(Australian model)

MHC-GZR33Di
Power output (rated):
 

105 W + 105 W (at 6 

Ω, 1kHz, 1% THD)

RMS output power (reference):
 

180 W + 180 W (per channel at 6 

Ω, 1kHz, 10% THD)

LBT-LCD7Di
Power output (rated):
 

105 W + 105 W (at 6 

Ω, 1kHz, 1% THD)

RMS output power (reference):
 

180 W + 180 W (per channel at 6 

Ω, 1kHz, 10% THD)

2009F04-1

© 

2009.06

•  HCD-GZR33D/LCD7Di are the tuner,
  iPod, DVD and amplifi er section 
 in 

LBT-LCD7Di/MHC-GZR33Di.

DVD
Section

Model Name Using Similar Mechanism

NEW

DVD Mechanism Type

CDM74HF-DVBU101

Optical Pick-up Name

KHM-313CAB

Tape Deck
Section

Model Name Using Similar Machanism

NEW

Tape Transport Mechanism Type

CWP42FR605

– Continued on next page –

Photo: HCD-GZR33D

VIDEO/SAT VIDEO IN (phono jack): 
 

1 Vp-p, 75 ohms

VIDEO/SAT AUDIO IN L/R (phono jacks): 
 

voltage 250/450 mV, impedance 47 kilohms

MIC 1/MIC 2 (phone jacks): 
 

sensitivity 1 mV, impedance 10 kilohms

VIDEO OUT (phono jack):
 

max. output level 1 Vp-p, unbalanced, Sync 

 

negative, load impedance 75 ohms

COMPONENT VIDEO OUT: 
 

Y: 1 Vp-p, 75 ohms 

 

P

B

/C

B

: 0.7 Vp-p, 75 ohms

 

P

R

/C

R

: 0.7 Vp-p, 75 ohms

DVD DIGITAL OUT 
(Square optical connector jack, rear panel):
 

Wavelength 650 nm

PHONES (stereo mini jack):
 

accepts headphones of 8 ohms or more

SUBWOOFER OUT: 

Voltage 1 V, impedance 1 kilohm

FRONT SPEAKER: 

MHC-GZR33Di:

 

Use only the supplied speaker SS-GZR77D.

 LBT-LCD7Di:
 

Use only the supplied speaker SS-LCD7Di.

 (USB) port: Type A (1)

 

Maximum current: 500 mA

System: 

Compact disc and digital audio and video system

Laser Diode Properties
 

Emission duration: Continuous Laser Output*: 

 

Less than 44.6

μW 

*This output is the value measurement at a distance 

of 200mm from the objective lens surface on the 
Optical Pick-up Block with 7mm aperture.

Frequency response  DVD (PCM 48 kHz): 2 Hz 

− 22 kHz (±1 dB)

 

CD: 2 Hz 

− 20 kHz (±0.5 dB)

Video color system format
 

Noth American model: NTSC

 

Other models: NTSC and PAL

FM stereo, FM/AM superheterodyne tuner
FM tuner section
Tuning range: 

Noth American model: 

 

87.5 – 108.0 MHz (100 kHz step)

 Other 

models: 

 

87.5 – 108.0 MHz (50 kHz step)

Antenna: 

FM lead antenna

Antenna terminals: 

75 

Ω unbalanced

Intermediate frequency:
 10.7 

MHz 

AM tuner section
Tuning range:  

Noth American and Australian models: 

 531 

− 1,710 kHz (with 9 kHz tuning interval)

 530 

− 1,710 kHz (with 10 kHz tuning interval)

 European 

model:

 531 

− 1,602 kHz (with 9 kHz tuning interval)

Antenna: 

AM loop antenna

Antenna terminals: 

External antenna terminal

Intermediate frequency:
 450 

kHz

Power requirements
 

Noth American model:  AC 120 V, 60 Hz 

 

European model: 

AC 230 V, 50/60 Hz 

 

Australian model: 

AC 230 - 240 V, 50/60 Hz 

Power consumption 
 MHC-GZR33Di: 

150 

W

 LBT-LCD7Di: 

150 

W

Dimensions (w/h/d) (excl. speakers) 
 

MHC-GZR33Di: Approx. 280 × 326 × 440 mm

 

LBT-LCD7Di: 

Approx. 280 × 326 × 440 mm

Mass (excl. speakers)
 

MHC-GZR33Di: Approx. 11.4 kg

 

LBT-LCD7Di: 

Approx. 11.4 kg

Supplied accessories: Remote Commander (1)
 

AM loop antenna (1)

 

FM lead antenna (1)

 

Video code (1)

 

Speaker foot (8)

 

R6 (Size AA) batteries (2)

Design and specifi cations are subject to change without notice.

0  OR  DOTTED  LINE  

0  ON  THE  SCHEMATIC  DIAGRAMS  AND  IN  

0  SUR  

SAFETY  CHECK-OUT  (US  MODEL)
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 

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 2 V AC range are suitable. (See 
Fig. A)

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 viscous (sticky, less prone to fl ow) 
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.

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.

FLEXIBLE  CIRCUIT  BOARD  REPAIRING
• 

Keep the temperature of soldering iron around 270 °C during 
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.

Laser component in this product is capable of emitting radiation 
exceeding the limit for Class 1.

This appliance is classifi ed as 
a CLASS 1 LASER product.
This marking is located on the 
rear exterior.

CAUTION
Use of controls or adjustments or performance of procedures 
other than those specifi ed herein may result in hazardous radia-
tion exposure.

The laser diode in the optical pick-up block may suffer electrostat-
ic break-down because of the potential difference generated by the 
charged electrostatic load, etc. on clothing and the human body.
During repair, pay attention to electrostatic break-down and also 
use the procedure in the printed matter which is included in the 
repair parts.
The fl exible board is easily damaged and should be handled with 
care.

NOTES  ON  LASER  DIODE  EMISSION  CHECK
The laser beam on this model is concentrated so as to be focused 
on the disc refl ective surface by the objective lens in the optical 
pickup block. Therefore, when checking the laser diode emission, 
observe from more than 30 cm away from the objective lens.

GZR33D: AEP

4-133-524-0[]

GZR33D: AUS

4-133-524-1[]

LCD7Di: US

4-133-525-0[]

LCD7Di: CND

4-133-525-1[]

• Abbreviation
  AUS  : Australian model
  CND  : Canadian model