Philco TB100HH9 User manual

SERVICE MANUAL
DTV DIGITAL TO
ANALOG CONVERTER
(SET TOP BOX)
TB100HH9
POWER

IMPORTANT SAFETY NOTICE
Proper service and repair is important to the safe, reliable operation of all
Funai Equipment. The service procedures recommended by Funai and
described in this service manual are effective methods of performing
service operations. Some of these service special tools should be used
when and as recommended.
It is important to note that this service manual contains various CAUTIONS
and NOTICES which should be carefully read in order to minimize the risk
of personal injury to service personnel. The possibility exists that improper
service methods may damage the equipment. It also is important to
understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE.
Funai could not possibly know, evaluate and advice the service trade of all
conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Funai has not
undertaken any such broad evaluation. Accordingly, a servicer who uses a
service procedure or tool which is not recommended by Funai must first
use all precautions thoroughly so that neither his safety nor the safe
operation of the equipment will be jeopardized by the service method
selected.
TABLE OF CONTENTS
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1-1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1
Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1
Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-4-1
Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-5-1
Schematic Diagrams / CBA’s and Test Points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-6-1
Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-7-1
Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-1
Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-9-1
Exploded Views. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1
Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1
Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12-1

1-1-1 X6033SP
SPECIFICATIONS
[ATSC]
Note: Nominal specs represent the design specs. All units should be able to approximate these – some will exceed
and some may drop slightly below these specs. Limit specs represent the absolute worst condition that still might
be considered acceptable; In no case should a unit fail to meet limit specs.
Description Unit Nominal
1. CH COVERAGE
VHF ch 2 to 13
UHF ch 14 to 69
2. VIDEO OUTPUT VOLTAGE
CVBS Vp-p 1.0
3. AUDIO OUTPUT VOLTAGE
L-OUT mVrms 2000
R-OUT mVrms 2000
4. AUDIO DISTORTION
L-OUT % 0.01
R-OUT % 0.01
5. AUDIO S/N
L-OUT dB 85
R-OUT dB 85
6. AUDIO SEPARATION
L-OUT dB 85
R-OUT dB 85
7. AUDIO FREQ. RESPONSE [20-20kHz] dB 0

1-2-1 STB_ISP
IMPORTANT SAFETY PRECAUTIONS
Product Safety Notice
Some electrical and mechanical parts have special
safety-related characteristics which are often not
evident from visual inspection, nor can the protection
they give necessarily be obtained by replacing them
with components rated for higher voltage, wattage,
etc. Parts that have special safety characteristics are
identified by a #on schematics and in parts lists. Use
of a substitute replacement that does not have the
same safety characteristics as the recommended
replacement part might create shock, fire, and/or other
hazards. The Product’s Safety is under review
continuously and new instructions are issued
whenever appropriate. Prior to shipment from the
factory, our products are carefully inspected to confirm
with the recognized product safety and electrical
codes of the countries in which they are to be sold.
However, in order to maintain such compliance, it is
equally important to implement the following
precautions when a set is being serviced.
Precautions during Servicing
A. Parts identified by the #symbol are critical for
safety. Replace only with part number specified.
B. In addition to safety, other parts and assemblies
are specified for conformance with regulations
applying to spurious radiation. These must also be
replaced only with specified replacements.
Examples: RF converters, RF cables, noise
blocking capacitors, and noise blocking filters, etc.
C. Use specified internal wiring. Note especially:
1) Wires covered with PVC tubing
2) Double insulated wires
3) High voltage leads
D. Use specified insulating materials for hazardous
live parts. Note especially:
1) Insulation tape
2) PVC tubing
3) Spacers
4) Insulators for transistors
E. When replacing AC primary side components
(transformers, power cord, etc.), wrap ends of
wires securely about the terminals before
soldering.
F. Observe that the wires do not contact heat
producing parts (heat sinks, oxide metal film
resistors, fusible resistors, etc.).
G. Check that replaced wires do not contact sharp
edges or pointed parts.
H. When a power cord has been replaced, check that
5 - 6 kg of force in any direction will not loosen it.
I. Also check areas surrounding repaired locations.
J. Be careful that foreign objects (screws, solder
droplets, etc.) do not remain inside the set.
K. When connecting or disconnecting the internal
connectors, first, disconnect the AC plug from the
AC outlet.

1-2-2 STB_ISP
Safety Check after Servicing
Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts, and
wires have been returned to their original positions. Afterwards, do the following tests and confirm the specified
values to verify compliance with safety standards.
1. Clearance Distance
When replacing primary circuit components, confirm
specified clearance distance (d) and (d’) between
soldered terminals, and between terminals and
surrounding metallic parts. (See Fig. 1)
Table 1: Ratings for selected area
Note: This table is unofficial and for reference only. Be
sure to confirm the precise values.
2. Leakage Current Test
Confirm the specified (or lower) leakage current
between B (earth ground, power cord plug prongs) and
externally exposed accessible parts (RF terminals,
antenna terminals, video and audio input and output
terminals, microphone jacks, earphone jacks, etc.) is
lower than or equal to the specified value in the table
below.
Measuring Method (Power ON):
Insert load Z between B (earth ground, power cord plug
prongs) and exposed accessible parts. Use an AC
voltmeter to measure across the terminals of load Z.
See Fig. 2 and the following table.
Table 2: Leakage current ratings for selected areas
Note: This table is unofficial and for reference only. Be sure to confirm the precise values.
AC Line Voltage Clearance Distance (d), (d’)
120 V ≥3.2 mm (0.126 inches)
AC Line Voltage Load Z Leakage Current (i) Earth Ground (B) to:
120 V 0.15 µF CAP. & 1.5 kΩRES.
Connected in parallel i ≤0.5 mA Peak Exposed accessible parts
Chassis or Secondary Conductor
Primary Circuit
Fig. 1
d' d
AC Voltmeter
(High Impedance)
Exposed Accessible Part
BEarth Ground
Power Cord Plug Prongs
Z
Fig. 2

1-3-1 STB_SN
STANDARD NOTES FOR SERVICING
Circuit Board Indications
1. The output pin of the 3 pin Regulator ICs is
indicated as shown.
2. For other ICs, pin 1 and every fifth pin are
indicated as shown.
3. The 1st pin of every male connector is indicated as
shown.
Instructions for Connectors
1. When you connect or disconnect the FFC (Flexible
Foil Connector) cable, be sure to first disconnect
the AC cord.
2. FFC (Flexible Foil Connector) cable should be
inserted parallel into the connector, not at an
angle.
Pb (Lead) Free Solder
When soldering, be sure to use the Pb free solder.
How to Remove / Install Flat Pack-IC
1. Removal
With Hot-Air Flat Pack-IC Desoldering Machine:
1. Prepare the hot-air flat pack-IC desoldering
machine, then apply hot air to the Flat Pack-IC
(about 5 to 6 seconds). (Fig. S-1-1)
2. Remove the flat pack-IC with tweezers while
applying the hot air.
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
CAUTION:
1. The Flat Pack-IC shape may differ by models. Use
an appropriate hot-air flat pack-IC desoldering
machine, whose shape matches that of the Flat
Pack-IC.
2. Do not supply hot air to the chip parts around the
flat pack-IC for over 6 seconds because damage
to the chip parts may occur. Put masking tape
around the flat pack-IC to protect other parts from
damage. (Fig. S-1-2)
Top View
Out In
Bottom View
Input
5
10
Pin 1
Pin 1
FFC Cable
Connector
CBA
* Be careful to avoid a short circuit.
Fig. S-1-1

1-3-2 STB_SN
3. The flat pack-IC on the CBA is affixed with glue, so
be careful not to break or damage the foil of each
pin or the solder lands under the IC when
removing it.
With Soldering Iron:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2. Lift each lead of the flat pack-IC upward one by
one, using a sharp pin or wire to which solder will
not adhere (iron wire). When heating the pins, use
a fine tip soldering iron or a hot air desoldering
machine. (Fig. S-1-4)
3. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
4. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Hot-air
Flat Pack-IC
Desoldering
Machine
CBA
Flat Pack-IC
Tweezers
Masking
Tape
Fig. S-1-2
Flat Pack-IC Desoldering Braid
Soldering Iron
Fig. S-1-3
Fine Tip
Soldering Iron
Sharp
Pin
Fig. S-1-4

1-3-3 STB_SN
With Iron Wire:
1. Using desoldering braid, remove the solder from
all pins of the flat pack-IC. When you use solder
flux which is applied to all pins of the flat pack-IC,
you can remove it easily. (Fig. S-1-3)
2. Affix the wire to a workbench or solid mounting
point, as shown in Fig. S-1-5.
3. While heating the pins using a fine tip soldering
iron or hot air blower, pull up the wire as the solder
melts so as to lift the IC leads from the CBA
contact pads as shown in Fig. S-1-5.
4. Bottom of the flat pack-IC is fixed with glue to the
CBA; when removing entire flat pack-IC, first apply
soldering iron to center of the flat pack-IC and heat
up. Then remove (glue will be melted). (Fig. S-1-6)
5. Release the flat pack-IC from the CBA using
tweezers. (Fig. S-1-6)
Note: When using a soldering iron, care must be
taken to ensure that the flat pack-IC is not
being held by glue. When the flat pack-IC is
removed from the CBA, handle it gently
because it may be damaged if force is applied.
2. Installation
1. Using desoldering braid, remove the solder from
the foil of each pin of the flat pack-IC on the CBA
so you can install a replacement flat pack-IC more
easily.
2. The “●” mark on the flat pack-IC indicates pin 1.
(See Fig. S-1-7.) Be sure this mark matches the 1
on the PCB when positioning for installation. Then
presolder the four corners of the flat pack-IC. (See
Fig. S-1-8.)
3. Solder all pins of the flat pack-IC. Be sure that
none of the pins have solder bridges.
To Solid
Mounting Point
Soldering Iron
Iron Wire
or
Hot Air Blower
Fig. S-1-5
Fine Tip
Soldering Iron
CBA
Flat Pack-IC
Tweezers
Fig. S-1-6
Example :
Pin 1 of the Flat Pack-IC
is indicated by a " " mark. Fig. S-1-7
Presolder
CBA
Flat Pack-IC
Fig. S-1-8

1-3-4 STB_SN
Instructions for Handling Semi-
conductors
Electrostatic breakdown of the semi-conductors may
occur due to a potential difference caused by
electrostatic charge during unpacking or repair work.
1. Ground for Human Body
Be sure to wear a grounding band (1 MΩ) that is
properly grounded to remove any static electricity that
may be charged on the body.
2. Ground for Workbench
Be sure to place a conductive sheet or copper plate
with proper grounding (1 MΩ) on the workbench or
other surface, where the semi-conductors are to be
placed. Because the static electricity charge on
clothing will not escape through the body grounding
band, be careful to avoid contacting semi-conductors
with your clothing.
<Incorrect>
CBA
Grounding Band
Conductive Sheet or
Copper Plate
1MΩ
1MΩ
<Correct>
CBA

1-4-1 X6032DC
CABINET DISASSEMBLY INSTRUCTIONS
1. Disassembly Flowchart
This flowchart indicates the disassembly steps to gain
access to item(s) to be serviced. When reassembling,
follow the steps in reverse order. Bend, route, and
dress the cables as they were originally.
2. Disassembly Method
(1): Identification (location) No. of parts in the figures
(2): Name of the part
(3): Figure Number for reference
(4): Identification of parts to be removed, unhooked,
unlocked, released, unplugged, unclamped, or
desoldered.
P=Spring, L=Locking Tab, S=Screw,
CN=Connector, W=Washer, N=Nut,
*=Unhook, Unlock, Release, Unplug, or Desolder
e.g. 4(S-2) = four Screws (S-2),
6(L-1) = six Locking Tabs (L-2)
(5): Refer to “Reference Notes.”
ID/
LOC.
No.
PART
REMOVAL
Fig.
No.
REMOVE/*UNHOOK/
UNLOCK/RELEASE/
UNPLUG/DESOLDER
Note
[1] Top Cover D1 4(S-1) -
[2] AV CBA D2
(S-2),
Display Window,
LED Lens
-
[3] Relay
CBA D2 Desolder -
[4]
DTV
Module
CBA Unit
D2 Desolder -
↓
(1) ↓ (2) ↓ (3) ↓ (4) ↓ (5)
[1] Top Cover
[3] Relay CBA [4] DTV Module
CBA Unit
[2] AV CBA
[1] Top Cover
(S-1) (S-1)
Fig. D1
Fig. D2
[2] AV CBA
[4] DTV Module
CBA Unit
[3] Relay CBA
LED Lens
Display
Window
Desolder
Desolder
(S-2)

1-5-1
BLOCK DIAGRAMS
System Control /VIDEO /AUDIO Block Diagram
X6032BLS
AV CBA
JK8 AUDIO(R)-OUT
TO DTV MODULE BLOCK DIAGRAM (CN003) TO DTV MODULE BLOCK DIAGRAM (CN003)
VIDEO SIGNAL AUDIO SIGNAL
AUDIO-MUTE
Q623
Q619
AL+3.3V
JK7 AUDIO(L)-OUT
AUDIO-MUTE
Q624
JK6 VIDEO-OUT (COMPOSITE)
INVERTER
Q621
Q630 Q631
BUFFER
Q614
BUFFER
Q618
IC607 (OP AMP)
1 7
6 2
DTV-AUDIO(R)
31
DTV-AUDIO(L)
30
DTV-VIDEO 29
DTV-S-RESET
12
DTV-S-SIN 9
SDA 14
SCL 15
DTV-S-SOUT
10
TU-SDA 5
TU-SCL 4
TU601 (TUNER UNIT)
3
AUDIO IN
4CH SW 7
VIDEO IN
12
SCL
13
SDA
15
DIF-AGC
16
DIF-OUT1
17
DIF-OUT2
6
RFOUT-SW
BUFFER BUFFER
IC610 (SUB MICROCONTROLLER)
6
REMOTE
4RFOUT-SW
19 XIN 20 XOUT
8DTV-S-RESET
11 TXD 12 RXD
5SDA 6SCL
5
POWER-SW
28
POWER-LED
REMOTE SENSOR
RS600
AL3.3V
POWER-ON
D622
POWER-SW
23
P-ON-H P-ON-H
40
SAFETY
18
RESET
22
VIDEO-MUTE
24
AUDIO-MUTE
26
SUB-CH-SW
SAFETY
RESET
IC611
12
SWITCHING
Q626
(MEMORY) IC600
DIF-OUT2 27 DIF-OUT1 26
DIF-AGC 24
CN600 CN600
TO POWER SUPPLY BLOCK DIAGRAM
WF2 WF1
Q632
BUFFER
4MHz OSC
X601

1-5-2
DTV Module Block Diagram
X6032BLDTV
IC101 (DTV SIGNAL PROCESS)
IC252 (AUDIO D/A CONVERTER)
ADC /AGC I/F
DIGITAL SIGNAL PROCESS SYSTEM DECODER /VIDEO DECODER /VIDEO FORMAT CONVERTER /2D GRAPHICS
DTV MODULE CBA UNIT
VIDEO SIGNAL
174 178
182 159 158 162 161
6 5 15
14
7 8
144 143
140
XIN-25MHz XOUT-25MHz
25MHz OSC
X281
4 5
VIDEO ENCODER AUDIO DECODER
AUDIO D/A CONVERTER
SDRAM I/F
FLASH MEMORY I/F
L-CH R-CH
SDA
SCL
*1
*1 79~81,85,87,89~92,94,96~98, 102,104,106
*2
*2 55,56,58,60,61,116,119,120,124, 125,127,129,130
*3
*3 1,2,7~12,20,206,209,211,213~216,
*4
*4 23~25,27,29,32~36,41~44,47,48,50, 52~54,205 *5 1~10,13,16~25,48 *6 29~36,38~45 *7 28~32,35~42 *8 2,4,5,7,8,10,11,13,54,56,57,59,60, 62,63,65
TO SYSTEM CONTROL /VIDEO /AUDIO BLOCK DIAGRAM (CN003) TO SYSTEM CONTROL /VIDEO /AUDIO BLOCK DIAGRAM (CN003)
CN101
DATA BUS(0-15) ADDRESS BUS(0-12) DATA BUS(0-15) ADDRESS BUS(1-21)
CN102
38BUS-CONT
SWITCHING
Q212
Q213
Q214
AUDIO SIGNAL
IC202 (FLASH MEMORY) IC201 (DDR SDRAM)
*5 *6 *7 *8
DDR SDRAM
FLASH MEMORY
154 153 204
DTV-S-SIN
DTV-S-SOUT
DTV-S-RESET
SWITCHING
Q211
RELAY CBA
9 DIF-AGC
11 DIF-OUT1 12 DIF-OUT2 14 DTV-VIDEO 15
DTV-AUDIO(L)
16
DTV-AUDIO(R)
4 TU-SCL 5 TU-SDA 9
DTV-S-SIN
10
DTV-S-SOUT
12
DTV-S-RESET
14 SDA 15 SCL
CN003
24 26 27 29 30 31
CN003
4 5 9
10 12 14 15

1-5-3
Power Supply Block Diagram
X6032BLP
CAUTION ! Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit. If Main Fuse (F602) is blown , check to see that all components in the power supply circuit are not defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components in the power supply circuit to fail.
NOTE: The voltage for parts in hot circuit is measured using hot GND as a common terminal.
F602 1A/250V
LINE FILTER
L600
AC601 AC CORD
BRIDGE RECTIFIER
D600 - D603
HOT COLD
T600
8 7
12 10
6
IC601 ERROR VOLTAGE DET
Q602
Q601
SWITCHING
CONTROL
SWITCHING
4 2 1
4 3
1 2
HOT CIRCUIT. BE CAREFUL.
11
9
IC616
AV CBA
Q611
SHUNT REG.
3
2
1
Q603
Q625
IC602
+5V REG.
IC604
+3.3V REG. AL+3.3V
P-ON-H
Q610
SW+2.5V
SAFETY
POWER-SW
TUNER+32V
J602
D+9V
Q609
SW+3.3V
IC628 SHUNT
REG.
3
2
1
Q628
SW+9V
Q607
J651
Q604
SW+5V
IC291
+1.09V REG.
CN102
DTV-ON+3.3V
DTV-ON +1.09V
DTV-ON+2.5V
CN101
DTV-ON+5V
DTV MODULE CBA UNIT
RELAY CBA
DTV-ON+3.3V
19 4
DTV-ON+2.5V
20 5
DTV-ON+1.8V
21 6
DTV-ON+5V
33
CN003 CN003
DTV-ON+1.8V
21
DTV-ON+2.5V
20
DTV-ON+3.3V
19
DTV-ON+5V
3
CN600 CN600
TO SYSTEMCONTROL /VIDEO /AUDIO BLOCK DIAGRAM (CN003)
A V
F
"Ce symbole reprèsente un fusible à fusion rapide."
CAUTION ! For continued protection against fire hazard, replace only with the same type fuse. ATTENTION : Pour une protection continue les risqes d'Incele n'utiliser que des fusible de même type. Risk of fire-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F

1-6-1 STB_SC
SCHEMATIC DIAGRAMS / CBA’S AND TEST POINTS
Standard Notes
WARNING
Many electrical and mechanical parts in this chassis
have special characteristics. These characteristics
often pass unnoticed and the protection afforded by
them cannot necessarily be obtained by using
replacement components rated for higher voltage,
wattage, etc. Replacement parts that have these
special safety characteristics are identified in this
manual and its supplements; electrical components
having such features are identified by the mark “#” in
the schematic diagram and the parts list. Before
replacing any of these components, read the parts list
in this manual carefully. The use of substitute
replacement parts that do not have the same safety
characteristics as specified in the parts list may create
shock, fire, or other hazards.
Notes:
1. Do not use the part number shown on these
drawings for ordering. The correct part number is
shown in the parts list, and may be slightly
different or amended since these drawings were
prepared.
2. All resistance values are indicated in ohms
(K = 103, M = 106).
3. Resistor wattages are 1/4W or 1/6W unless
otherwise specified.
4. All capacitance values are indicated in µF
(P = 10-6 µF).
5. All voltages are DC voltages unless otherwise
specified.

1-6-2 STB_SC
LIST OF CAUTION, NOTES, AND SYMBOLS USED IN THE SCHEMATIC DIAGRAMS ON
THE FOLLOWING PAGES:
1. CAUTION:
FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE
SAME TYPE FUSE.
ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQES D'INCELE N'UTILISER
QUE DES FUSIBLE DE MÊME TYPE.
RISK OF FIRE-REPLACE FUSE AS MARKED.
2. CAUTION:
Fixed Voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) is blown, first check to see that all components in the power supply circuit are not
defective before you connect the AC plug to the AC power supply. Otherwise it may cause some components
in the power supply circuit to fail.
3. Note:
1. Do not use the part number shown on the drawings for ordering. The correct part number is shown in the
parts list, and may be slightly different or amended since the drawings were prepared.
2. To maintain original function and reliability of repaired units, use only original replacement parts which are
listed with their part numbers in the parts list section of the service manual.
4. Voltage indications for Power on mode on the schematics are as shown below:
5. How to read converged lines
6. Test Point Information
A V
F
This symbol means fast operating fuse.
Ce symbole represente un fusible a fusion rapide.
23
15.0
Indicates that the voltage
is not consistent here.
Power on mode
(Unit: Volt)
3
2
1
ABCD
1-B1
1-D3
AREA D3
AREA B1
1-D3
Distinction Area
Line Number
(1 to 3 digits)
Examples:
1. "1-D3" means that line number "1" goes to the line number
"1" of the area "D3".
2. "1-B1" means that line number "1" goes to the line number
"1" of the area "B1".
: Indicates a test point with a jumper wire across a hole in the PCB.
: Used to indicate a test point with a component lead on foil side.
: Used to indicate a test point with no test pin.
: Used to indicate a test point with a test pin.

1-6-3
AV 1/2 Schematic Diagram
X6032SCAV1
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.
"Ce symbole reprèsente un fusible à fusion rapide."
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
ATTENTION : Pour une protection continue les risqes
d'Incele n'utiliser que des fusible de même type.
Risk of fire-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.

1-6-4 X6032SCAV2
CN600
10
2---
35.1
43.3
53.3
60
7---
8---
93.4
10 3.3
11 0
12 3.4
13 0
14 3.3
15 3.3
16 ---
17 3.5
18 0
19 3.3
20 2.6
21 1.8
22 ---
23 0
24 ~
25 0
26 0
27 0
28 0
29 0.4
30 2.5
31 2.5
32 0
33 ---
34 ---
35 ---
VOLTAGE CHART
Pin No. Voltage
AV 2/2 & Relay Schematic Diagram

1-6-5
DTV Module 1/2 Schematic Diagram
X6032SCD1

1-6-6
DTV Module 2/2 Schematic Diagram
X6032SCD2

1-6-7 BX6033F01011
AV CBA Top View
Because a hot chassis ground is present in the power
supply circuit, an isolation transformer must be used.
Also, in order to have the ability to increase the input
slowly,when troubleshooting this type power supply
circuit, a variable isolation transformer is required.
"Ce symbole reprèsente un fusible à fusion rapide."
CAUTION !
For continued protection against fire hazard,
replace only with the same type fuse.
ATTENTION : Pour une protection continue les risqes
d'Incele n'utiliser que des fusible de même type.
Risk of fire-replace fuse as marked.
"This symbol means fast operating fuse."
A V
F
NOTE:
The voltage for parts in hot circuit is measured using
hot GND as a common terminal.
CAUTION !
Fixed voltage (or Auto voltage selectable) power supply circuit is used in this unit.
If Main Fuse (F602) is blown , check to see that all components in the power supply
circuit are not defective before you connect the AC plug to the AC power supply.
Otherwise it may cause some components in the power supply circuit to fail.