Sony JumboTron LDU-1530S User manual

LDU-1530S World
LDU-1530L World
LDU-1540S World
LDU-1540L World
LED Jumbo Tron Display Unit
REVISED-1
SERVICE MANUAL
MODEL DEST.
............... .........

!WARNING
This manual is intended for qualified service personnel only.
To reduce the risk of electric shock, fire or injuly, do not perform any servicing other than that
contained in the operating instructions unless you are qualified to do so. Refer all servicing to
qualified service personnel.

1(E)
LDU-1530/1540
CAUTION OF UNIT
CAUTION
To Avoid Unit from Dropping
Allways attach the wire to the unit
before installation or removal to
avoid injury by accidental drop of the
unit.
1.
Do Not Look LED Light Straight
Looking LED light straight in close
distance, when LED is ON, strong
light may be harmful to your eyes.
2.
WARNING!!
AN INSULATED TRANSFORMER SHOULD BE USED DURING
ANY SERVICE TO AVOID POSSIBLE SHOCK HAZARD,
BECAUSE OF THE LIVE CHASSIS.
THE CHASSIS OF THIS RECEIVER IS DIRECTLY CONNECTED
TO THE AC POWER LINE.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY A !!
!!
!MARK ONTHE SCHEMATIC
DIAGRAMS, EXPLODED VIEWS AND IN THE PARTS LIST ARE
CRITICAL TO SAFE OPERATION. REPLACE THESE COMPO-
NENTSWITH SONY PARTSWHOSE PART NUMBERS APPEAR
AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS PUB-
LISHED BY SONY.
ATTENTION!!
AFIN D’EVITER TOUT RISQUE D’ÉLECTROCUTION
PROVENANT D’UN CHÂSSIS SOUS TENSION, UN
TRANSFORMATEUR D’ISOLEMENT DOIT ETRE UTILISÉ LORS
DE TOUT DÉPANNAGE.
LE CHÂSSIS DE CE RÉCEPTEUR EST DIRECTEMENT
RACCORDÉ Á L’ALIMENTATION SECTEUR.
ATTENTION AUX COMPOSANTS RELATIFS ÁLA
SÉCURITÉ!!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE !SUR
LES SCHÉMAS DE PRINCIPE, LES VUES EXPLOSÉES ET LES
LISTES DE PIECES SONT D’UNE IMPORTANCE CRITIQUE
POUR LA SÉCURITÉ DU FONCTIONNEMENT. NE LES
REMPLACER QUE PAR DES COMPOSANTS SONY DONT LE
NUMÉRO DE PIÉCE EST INDIQUÉ DANS LE PRÉSENT MANUEL
OU DANS LES SUPPLÉMENTS PUBLIÉS PAR SONY.

1(E)
LDU-1530/1540
Display element: Full color LED cell x 16
Maximum brightness: 3000 cd/m2(1530L, 1530S)
4000 cd/m2(1540L, 1540S)
Color temperature: 7000 K (1/2 brightness)
Uneven brightness: ±3% or less (front, between pixels)
Pixel pitch: 15 mm x15 mm
Visible distance: 7.6 m or more
Angle of visibility: Horizontal +60 d(1530S, 1530L) (1540S, 1540L)
Vertical (50%)
Up 30 d, down 60 d: (1530S, 1540S)
Up 15 d, down 40 d: (1530L, 1540L)
Operating temperature: 0 dC to +45 dC
Storage temperature: _20 dC to +60 dC
Humidity: 90% or less (no condensation)
Drip-proof: Surface drip-proof structure (equivalent to JIS Grade 5)
Power supply voltage, frequency: AC100 ~ 240 V ±10%, 50/60 Hz
Power consumption: Maximum 100 W
Signal input: 15-pin connector
Power supply input: 3-pin inlet
Dimensions: 239 x 239 x 153 mm (H x W x D) : (1530S, 1540S)
239 x 239 x 158 mm (H x W x D) : (1530L, 1540L)
Weight: 3.0 kg
Units and cells
Louver length Brightness Visible angle Remarks
(mm) (cd/m2) (H/V)
LDU-1530S 7 3000 120 d/u: 30 dIndoor use
d: 60dLow noise level
LDU-1530L 12 3000 120 d/u: 15 dOutdoor use
d: 40 dWide visible angle
LDU-1540S 7 4000 120 d/u: 30 dIndoor use
d: 60dLow noise level
LDU-1540L 12 4000 120 d/u: 15 dOutdoor use
d: 40 dWide visible angle
Specifications
2(E)

2(E) LDU-1530/1540
1. SERVICE INFORMATIONS
1-1. Circuit Boards Location ............................................................................1-1(E)
1-2. Disassembly...............................................................................................1-2(E)
1-2-1. Exchanging the Cell Assembly form the Front Side of the Unit .......1-2(E)
1-2-2. Exchanging the Cell Assembly form the Behind of the Unit ............1-3(E)
1-2-3. Rear cover Removal ..........................................................................1-4(E)
1-2-4. G Board (Switching Regulator) Removal..........................................1-4(E)
1-2-5. Cell Assembly Removal .................................................................... 1-5(E)
1-2-6. B Board Removal ..............................................................................1-5(E)
1-2-7. LDM-1540S/1540L Exterior View ....................................................1-6(E)
2. CIRCUIT ADJUSTMNETS
2-1. Lowest FrequencyAdjustment (RV103) ...................................................2-1(E)
2-2. Power Factor Improvement (PFC)Voltage Adjustment (RV101) .............2-1(E)
2-3. Output Voltage Adjustment (RV201).........................................................2-1(E)
2-4. PLL Adjustment (RV2001)........................................................................2-1(E)
3. CIRCUIT DESCRIPTIONS
3-1. Signal System ............................................................................................3-1(E)
3-2. Address Switch and Status LED ...............................................................3-3(E)
3-2-1. Address Switch ..................................................................................3-3(E)
3-2-2. Status LED.........................................................................................3-3(E)
3-2-3. BrightnessAdjustment.......................................................................3-3(E)
3-3. Power System ............................................................................................3-3(E)
3-3-1. Filter &AC Rectifier Block...............................................................3-3(E)
3-3-2. PFC Block .........................................................................................3-3(E)
3-3-3. Power Supply Block ..........................................................................3-3(E)
3-3-4. OTP (Temperature Protection) Circuit ..............................................3-4(E)
3-3-5. OutputVoltages .................................................................................3-4(E)
3-3-6. OVP Circuit .......................................................................................3-4(E)
TABLE OF CONTENTS
3(E)

3(E)
LDU-1530/1540
4. SEMICONDUCTORS
5. EXPLODED VIEWS
5-1. Chassis ............................................................................................................ 5-2
6. ELECTRICAL PARTS LIST
7. BLOCK DIAGRAM
8. DIAGRAMS
8-1. Schematic Diagrams and Printed Wiring Boards ........................................... 8-1
SCHEMATIC DIAGRAMS
• Q Board ........................................................................................................ 8-3
• B Board ........................................................................................................ 8-6
• G Board ...................................................................................................... 8-15
PRINTED WIRING BOARDS
• Q Board ........................................................................................................ 8-2
• B Board ........................................................................................................ 8-5
• G Board ...................................................................................................... 8-14
4(E)

1-1(E)
LDU-1530/1540
SECTION 1
SERVICE INFORMATIONS
1-1. CIRCUIT BOARDS LOCATION
G (APS-102)
Q
B
Caution for Static Electricity to LED Cell
The LED is very weak to static electricity, and a discharge of static electricity could shorten the LED life.
Wear the earth bands when touching the LED or the connector of the LED cell to replace the LED cell or handle the unit.

1-2(E) LDU-1530/1540
1-2. DISASSEMBLY
1-2-1. Exchanging the Display Unit from the Front Side of the Unit.
1Unit remover (Jig)
4-067-026-01
2Pull out the display unit
with the jig.
Display unit
3Remove two bosses.
4Remove the display unit.
1. 2.
3.

1-3(E)
LDU-1530/1540
1-2-2. Exchanging the Display Unit from the Behind of the Unit.
Claw
Hook
Engage hooks with claws.
2Two hooks
1Spring hook (Jig)
4-067-027-01
Note: Please make it sure
that hooks are
disconnected and
locked after the
display unit is
removed.
4Remove
two
bosses.
3Push the
display unit in
the arrow
direction.
5Pull the display unit out of the unit
in the arrow direction.
1. 2.
3.

1-4(E) LDU-1530/1540
1-2-3. Rear Cover Removal
1-2-4. G Board (Switching Regulator) Removal
1Four screws
CN2003
CN1001
2Rear cover
CN201
CN151
CN1018
1Four screws
(+BVTT3 X 10)
2Switching regulator
3Three screws
(+PS3 X 8)
5G Board
6Shield plate
4Three holders

1-5(E)
LDU-1530/1540
1-2-5. Cell Assembly Removal
1-2-6. B Board Removal
.Remove the G Board (switching regulator) and
cell assembly.
O ring
1Eight screws
(+B M3)
Note: fasten equally.
2Louver (L)
3Cell assembly
1Screw
(+BVTT3 X 10)
2B board

1-6(E) LDU-1530/1540
1-2-7. LDM-1540S/1540L Exterior View
Rear View
Front View
LDU-1540S/1540L
Note: On replacing one of the units in the module, each unit is placed in each shelf; the top, the middle and the
bottom. In three units, the top one and the bottom one cannot be replaced immediately because the module
frame obstructs them. To remove the top or bottom unit, remove the middle unit first and unlock the hooks
of the unit to be removed. Then slide it a little bit into the space where the middle one used to be. To install,
follow the method in reverse order, that is, slide the unit in the shelf to fix through the space where the
middle one used to be. After fixing, put the middle unit back. (Please connect the cable and perform setting
of address (3-3(E)).)

2-1(E)
LDU-1530/1540
SECTION 2
CIRCUIT ADJUSTMENTS
Measuring instrument:
1. Oscilloscope
2. Digital tester
3. DC power supply
G BOARD ADJUSTMENTS
2-1. LOWEST FREQUENCY
ADJUSTMENT (RV103)
Apply 18 V between 4 pin (VIN) and 16 pin (GND) of
IC103, and check the Q105 gate input waveform with an
oscilloscope.
Then, adjust the frequency of gate waveform to 100 kHz
±2 kHz with the RV103. (Set oscilloscope to 5 V range)
* Don't turn on Power supply AC.
2-2. POWER FACTOR IMPROVEMENT
(PFC) VOLTAGE ADJUSTMENT
(RV101)
Power supply AC100 to 240 V, and adjust RV101 so that
the voltage at both ends of C111 becomes 380 ±5 V. The
load mode is the MIN.
2-3. OUTPUT VOLTAGE ADJUSTMENT
(RV201)
Power supply AC100 to 240 V, and adjust RV201 so that
the output voltage of 5.8 V line (CN201 a8-13 pins)
becomes 5.80 ±0.05 V.
Then, confirm that each line voltage is within the
following range.
5.8 V line (CN201 a8-13 pins) 5.75 ~ 5.80 V
4.1 V line (CN201 a3-7 pins) 3.95 ~ 4.35 V
5.0 V line (CN201 a14, 15 pins) 4.80 ~ 5.20 V
12 V line (CN201 a1, 2 pins) 9.8 ~ 12.4 V
The load mode is the MIN.
100 kHz ±2 kHz
G Board (APS-102)
RV103
Lowest Frequency
Adjustment
Q105
C111 RV101
Power Factor
Improvement Voltege
Adjustment
RV201
Output Voltage
Adjustment
IC103 CN201
a
116
98
15
1b
Q BOARD ADJUSTMENT
2-4. PLL ADJUSTMENT (RV2001)
Power supply AC100 to 240 V, connect the oscilloscope
with TP2001 and adjust RV2001 so that the center of
waveform becomes 1.7 ±0.05.
TP2001 TP2002
(GND)
RV2001
PLL
Adjustment
IC2001
CN2003
17 ±0.05V
GND
Q Board

3-1(E)
LDU-1530/1540
SECTION 3
CIRCUIT DESCRIPTIONS
3-1. SIGNAL SYSTEM
Fig. 2 Signal Block Diagram
Fig. 1
+
_
RECEIVER
CGA
From
ICU
IC2002
IC2001
VCO
FILTER
IC2005
CPO CLK
D0-11
A1-11
D0-15
A0-19
D0-9
A0-9
CLK
IOUT0-23
CLK
IOUT0-23
CLK
IOUT0-23
D0-9
A0-9
D0-9
X16
A0-9
EEPROM
IC1010
D0-7
A0-12
SYS CLK
CPU
X1003
DRIVER
IC1017
DRIVER
To CELL
IC1018
DRIVER
IC1019
CLK
IOUT0-23
D0-9
A0-9 DRIVER
IC1032
IC1001
XTAL,EXTAL
ADDRESS
DATA
NTSC CLK
X1001 CLOCK
SELECT
IC1015
PAL CLK
X1002
5 Vp-p
+5 V
0 V
+5 V
0 V
+
5 Vp-p_
+
_
Input Data
Input Output
Transmission
Line CN Board
Receiver IC
IC2001
In Image
Control Unit
(ICU)
Output Data
Balanced
Transmission
Data
Data
Noise mixing in transmission Line
(In-phase mixing in +and _)

3-2(E) LDU-1530/1540
The data signals from ICU are input to the IC2001 CGA
via IC2002 line receiver on the Q board. A phase
comparator is built in the CGA, and the PLL is composed
of a combination of filter and IC2005 VCO. A clock
component contained in the data form ICU is extracted by
this PLL, and it is used as reference clock for CGA. The
line address is added to the head of image data, and the
CGA makes serial-parallel conversion of only the data that
corresponds to the unit ID concerned and takes it in the
RAM. The microprocessor IC1001 on the B board sends
this data to respective drivers (IC1017 to 1032). Where
1/480 sec
1/60 sec
Image Data
Data Transfer
(CGATO DRIVER)
WALL
(Emission Start
Signal)
Upper Lower Lower Lower LowerUpper Upper Upper
INTDT
(Data Receiving
Interrupt Signal)
XUPR
(Upper & Lower Lines
Switching Signal)
PWM Output
Data corresponding to unit
Blanking Period
Interrupted by a trailing edge
Fig. 3
PWM modulation is performed to drive the cells.
The correction data for each pixel are stored in the IC1010
EEPROM on the B board. The microprocessor always
writes these correction data into the RAM in driver ICs on
the B board. Based on these correction data, the driver ICs
control the current to correct uneven brightness of each
device. The clock input to the driver ICs is internally
divided according to the brightness level, and it is used as
reference clock for PWM modulation.
The correction data stored in the EEPROM are adjustable
in the field using the unit alignment controller or screen
alignment controller.

3-3(E)
LDU-1530/1540
3-2. ADDRESS SWITCH AND
STATUS LED
3-2-1. Address Switch
The function of the signal generator is built in the unit, and
it can generate three kinds of signals as listed in Table 1.
The signals can be selected with the address switch. The
address switch has been set to 001 at the shipment.
*: Don’t care for higher 1 digit. Table 1
Initial setting of address switch:
In composing the screen, set the address switches of
respective unit as follows.
3-2-2. Status LED
Specific unit can easily be selected by blinking the LED on
the rear of unit using the unit alignment controller or
screen alignment controller.
Also, in case of alarm, LED automatically lights up by the
self diagnostic function.
Address SW setting Output signal Remarks
(Lower 2 digits)
*97 Full white signal
*98 Character signal Alphabets and numbers
are scrolled.
*99 Stair step signal, color bar signal, and blanking
signal are scrolled.
01
02
03
04
01
02
03
04
01
02
03
04
01
02
03
04
01
02
03
04
01
02
03
04
Green Normal
Red lights up Alarm
Red blinking Unit selection
3-2-3. Brightness Adjustment
The brightness (color temperature) can be adjusted for
every unit, cell dot, and pixel using the unit alignment
controller (JME-UA200), and this value can be stored in
the memory. For an adjusting method, refer to the JME-
UA200 Instruction Manual.
3-3. POWER SYSTEM
3-3-1. Filter & AC Rectifier Block
After AC inlet, a discharge resistor R101 and a normal
mode lightning surge protect varistor VDR101 are
arranged. After that, the 2-stage filter is composed of
C101/LF101 and LF102/C102, and rectification is done
with D101.
3-3-2. PFC Block
After rectification, a boost up converter is composed of
Q101, D102, and C110, and the output voltage is
maintained to about 380 V (adjusted with RV101) under
control of IC101.
The IC101 detects the input current waveform to make the
input current similar to the input voltage of the same phase
so as to improve the power factor.
When the power is turned on, the power is supplied from
R153, R154, then after the power supply block started to
operate, the power is supplied from D105 and R117 of the
T101 tertiary winding.
As for the overvoltage, etc. caused by alarms in the PFC
control system, the double protection circuit of restriction
by IC102 (5, 6, 7 pins) and latch through detection by
IC103 is provided. The PFC output voltage is set to about
380 V with RV101.
Also for the overvoltage or overcurrent caused by alarms
in the PFC control system, the protection circuit operates
through monitoring by the IC103.
3-3-3. Power Supply Block
Basic circuit composition is the 2-crystal current resonance
circuit consisting of Q104 and 105. Using C117 and T101
primary winding leakage inductance, the resonance system
is made up to perform zero current switching. By the
switching, the output of IC103 OUT 1, 2 pins is
transmitted to the respective drive circuits for Q104 and
105 via T102 drive transformer. The control system is a
4 V Down
6 V Down
12 V Down
Thermal Alarm
Fan Stop

3-4(E) LDU-1530/1540
frequency control system, where the output voltage is
controlled to constant level by varying the RT2 terminal
via PH101.
3-3-4. OTP (Temperature Protection) Circuit
This circuit consists of THP101 and Q106 attached to the
heat sink, and when the heat sink temperature rises over
110flC, THP101 opens, IC103 OVP terminal (6 pin)
becomes “H”, IC101 is latched, and the switching of
power supply block stops. To reset, turn off the AC and
allow time for about one minute so as to lower the IC103
Vin terminal (4 pin) to 12 V or less.
3-3-5. Output Voltages
5.8 V Output
After output from the T101 secondary winding terminal,
the power is rectified at D204 and 205, and a ripple
component is reducedby a ptype filter, then the voltage is
output from the output terminal CN201 a8-13 pins. The
output voltage is detected by the operation amplifier of
IC202 5, 6, 7 pins, then it is returned to the IC103 12 pin
via PH101 so as to be stabilized through the frequency
control system. Both 5.8 V and 4.1 V are adjusted with
RV201. Also, by detecting the voltage at both ends of
L204, if the current in 5.8 V line is taken about 12 A or
more, Q202 turns on via D215 and 214, PH102 operates,
IC103 OVP terminal (6 pin) becomes “H”, IC101 is
latched, and the switching of power supply block stops. To
reset, turn off the AC and allow time for about one minute
so as to lower the IC103 Vin terminal (4 pin) to 12V or
less.
5.0 V Output
As for the 5 V output, the power is branched prior to L204
for 5.8 V output, and it is controlled to 5 V by 4-pin
regulator IC201 having low saturation, then output from
the output terminal CN201 a14-15 pins.
4.1 V Output
After output from the T101 secondary winding terminal,
the 4.1 V power is supplied from D206 and magnetic
amplifier consisting of L201 and 202. A ripple component
is reduced by a ptype filter, then the voltage is output
from the output terminal CN201 a3-7 pins. The output
voltage is detected by the operation amplifier of IC202 8,
9, 10 pins, then it is returned to the magnetic amplifier via
Q201 so as to be stabilized.
Also, by detecting the voltage at both ends of L206 with
IC202 12, 13, 14 pins, if the current in 4.1 V line is taken
about 14 A or more, Q202 turns on via D215 and 214,
PH102 operates, IC103 OVP terminal (6 pin) becomes
“H”, IC101 is latched, and the switching of power supply
block stops. To reset, turn off the AC and allow time for
about one minute so as to lower the IC103 Vin terminal
(4 pin) to 12 V or less.
12 V Output
After output from the T101 secondary winding terminal,
the 12 V is output from the double voltage circuit
composing of C201, 202, and D202, 203, 209, 210 using
the 5.8 V line. After that, it is branched into two lines; in
one line, a ripple component is reduced by a ptype filter,
then it becomes Vcc for the circuit system on the
secondary side, and in another line, the voltage is output
from the output terminal CN201 a1-2 pins through the
TH201 for current restriction.
3-3-6. OVP Circuit
The 5.8 V and 4.1 V output voltages are monitored by
Zener diode D212 and 211, and if overvoltage occurs,
Q202 turns on via D215 and 214, PH102 operates, IC103
OVP terminal (6 pin) becomes “H”, IC101 is latched, and
the switching of power supply block stops. To reset, turn
off the AC and allow time for about one minute so as to
lower the IC103 Vin terminal (4 pin) to 12 V or less.