Read JBL DSC 1000 (serv.man16) Service Manual online
DSC 1000
DIGITAL
SIMPLY CINEMA
SIMPLY CINEMA
SERVICE MANUAL
®
The DSC 1000 Controller is shown here.
This Service Manual includes service information for
DSC1000 head unit only.
For service information on the speaker system see JBL
SCS200.5 Service Manual
DSC1000 head unit only.
For service information on the speaker system see JBL
SCS200.5 Service Manual
ENGLISH
DSC 1000 CONTROLLER
SPECIFICATIONS
SPECIFICATIONS
DVD player
Pickup:
Semiconductor laser, wavelength 650nm
Signal system:
NTSC / PAL
Video signal horizontal resolution:
More than 480 lines (DVD)
Video signal-to-noise ratio:
More than 60 dB (DVD)
Audio frequency response:
DVD (PCM): 20Hz ~ 22kHz (+/- 1.0dB)
(Stereo)
CD (PCM): 20Hz ~ 20kHz (+/- 1.0dB)
Audio signal-to-noise ratio:
More than 80 dB (PCM)
Total harmonic distortion::
Less than 0.01% (PCM)
Dynamic range:
DVD (PCM): More than 85 dB (EIAJ, 2kHz)
CD: More than 85 dB (EIAJ)
CD: More than 85 dB (EIAJ)
FM Tuner
System:
PLL quartz-locked digital synthesizer system
Tuning range:
87.50 ~ 108.00 MHz
Antenna terminals:
75 ohms, unbalanced
Intermediate frequency:
10.7 MHz
Video Outputs
Component Video Output:
Y: 1 V
p-p
/75 Ohms, sync negative polarity
Cr: 0.7 V
p-p
/75 Ohms
Cb: 0.7 V
p-p
/75 Ohms
CVBS Video:
1 Vp-p 75 ohms
S-video:
Y: 1 Vp-p 75 ohms
C: PAL 0.3 Vp-p 75 ohms / NTSC 0.286 Vp-p 75 ohms
C: PAL 0.3 Vp-p 75 ohms / NTSC 0.286 Vp-p 75 ohms
Audio line Outputs
Audio L/R:
1 Vrms, 1 kilohms
General
Power requirements:
AC 230 V, 50 Hz
Power consumption:
20 W
Dimensions (WxHxD):
431 x 75 x 352 mm, 17" x 3" x 14"
Weight:
8.5 kg, 18.7 lb.
* Designs and specifications are subject to change without notice.
JBL continually strives to improve its products by introducing design refinements into existing models without notice. For
this reason, the DSC 1000 systems may differ in some respects from the published specifications and descriptions, but will
always equal or exceed the original specifications unless otherwise stated.
this reason, the DSC 1000 systems may differ in some respects from the published specifications and descriptions, but will
always equal or exceed the original specifications unless otherwise stated.
CONSUMERS SHOULD NOTE THAT NOT ALL HIGH DEFINITION TELEVISION SETS ARE FULLY COMPATIBLE WITH THIS
PRODUCT AND MAY CAUSE ARTIFACTS TO BE DISPLAYED IN THE PICTURE. IN CASE OF 525 OR 625 PROGRESSIVE
SCAN PICTURE PROBLEMS, IT IS RECOMMENDED THAT THE USER SWITCH THE CONNECTION TO THE ‘STANDARD
DEFINITION’ OUTPUT. IF THERE ARE QUESTIONS REGARDING OUR TV SET COMPATIBILITY WITH THIS MODEL 525p
AND 625p DVD PLAYER, PLEASE CONTACT OUR CUSTOMER SERVICE CENTER.
1
SERVICING PRECAUTIONS
NOTES REGARDING HANDLING OF THE PICK-UP
1. Notes for transport and storage
1) The pick-up should always be left in its conductive bag until immediately prior to use.
2) The pick-up should never be subjected to external pressure or impact.
2) The pick-up should never be subjected to external pressure or impact.
2. Repair notes
1) The pick-up incorporates a strong magnet, and so should never be brought close to magnetic materials.
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
2) The pick-up should always be handled correctly and carefully, taking care to avoid external pressure and
impact. If it is subjected to strong pressure or impact, the result may be an operational malfunction
and/or damage to the printed-circuit board.
and/or damage to the printed-circuit board.
3) Each and every pick-up is already individually adjusted to a high degree of precision, and for that reason
the adjustment point and installation
screws should absolutely never be touched.
screws should absolutely never be touched.
4) Laser beams may damage the eyes!
Absolutely never permit laser beams to enter the eyes!
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
Also NEVER switch ON the power to the laser output part (lens, etc.) of the pick-up if it is damaged.
5) Cleaning the lens surface
If there is dust on the lens surface, the dust should be cleaned away by using an air bush (such as used
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-
ton swab should be used, taking care not to distort this.
for camera lens). The lens is held by a delicate spring. When cleaning the lens surface, therefore, a cot-
ton swab should be used, taking care not to distort this.
6) Never attempt to disassemble the pick-up.
Spring by excess pressure. If the lens is extremely dirty, apply isopropyl alcohol to the cotton swab. (Do
not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of
this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
not use any other liquid cleaners, because they will damage the lens.) Take care not to use too much of
this alcohol on the swab, and do not allow the alcohol to get inside the pick-up.
Storage in conductive bag
NEVER look directly at the laser beam, and don’t let contact
fingers or other exposed skin.
fingers or other exposed skin.
Magnet
How to hold the pick-up
Conductive Sheet
Cotton swab
Pressure
Pressure
Drop impact
2
NOTES REGARDING COMPACT DISC PLAYER REPAIRS
1. Preparations
1) Compact disc players incorporate a great many ICs as well as the pick-up (laser diode). These compo-
nents are sensitive to, and easily affected by, static electricity. If such static electricity is high voltage,
components can be damaged, and for that reason components should be handled with care.
components can be damaged, and for that reason components should be handled with care.
2) The pick-up is composed of many optical components and other high-precision components. Care must
be taken, therefore, to avoid repair or storage where the temperature of humidity is high, where strong
magnetism is present, or where there is excessive dust.
magnetism is present, or where there is excessive dust.
2. Notes for repair
1) Before replacing a component part, first disconnect the power supply lead wire from the unit
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
2) All equipment, measuring instruments and tools must be grounded.
3) The workbench should be covered with a conductive sheet and grounded.
When removing the laser pick-up from its conductive bag, do not place the pick-up on the bag. (This is
because there is the possibility of damage by static electricity.)
because there is the possibility of damage by static electricity.)
4) To prevent AC leakage, the metal part of the soldering iron should be grounded.
5) Workers should be grounded by an armband (1M
5) Workers should be grounded by an armband (1M
Ω
)
6) Care should be taken not to permit the laser pick-up to come in contact with clothing, in order to prevent
static electricity changes in the clothing to escape from the armband.
7) The laser beam from the pick-up should NEVER be directly facing the eyes or bare skin.
Resistor
(1 Mohm)
(1 Mohm)
Conductive
Sheet
Sheet
Resistor
(1 Mohm)
(1 Mohm)
Armband