HBD-TZ215/TZ715
3
1.
SERVICING NOTES
............................................. 3
2. DISASSEMBLY
2-1. Disassembly
Flow
........................................................... 6
2-2. Case
(KZ)
........................................................................ 7
2-3. Loading Panel Block ....................................................... 8
2-4. Front Panel Block ........................................................... 8
2-5. FL Board, USB KEY Board, KZ-USB Board ................ 9
2-6. KEY-SW Board, P-SW Board ........................................ 10
2-7. Back Panel Block ............................................................ 11
2-8. DVD Mechanism Deck (CDM85MB-DVBU102) ......... 12
2-9. MAIN
Board
................................................................... 13
2-10. POWER Board ................................................................ 14
2-11. FFC Holder ..................................................................... 15
2-12. Optical Pick-up (KHM-313CAA) .................................. 16
2-13. Belt .................................................................................. 16
2-14. DC Motor (Loading) (M001), MS-203 Board ................ 17
2-15. How to Bend Wire (Flat Type) ........................................ 17
3.
TEST MODE
............................................................ 18
4.
ELECTRICAL CHECKS
...................................... 21
5. DIAGRAMS
5-1. Block Diagram - SERVO Section - ................................ 22
5-2. Block Diagram - VIDEO Section - ................................. 23
5-3. Block Diagram - AUDIO Section - ................................. 24
5-4. Block Diagram - AMP Section - ..................................... 25
5-5. Block Diagram - POWER Section - ............................... 26
5-6. Printed Wiring Board - MAIN Section (1/2) - ................ 28
5-7. Printed Wiring Boards - MAIN Section (2/2) - .............. 29
5-8. Schematic Diagram - MAIN Section (1/8) - ................... 30
5-9. Schematic Diagram - MAIN Section (2/8) - ................... 31
5-10. Schematic Diagram - MAIN Section (3/8) - ................... 32
5-11. Schematic Diagram - MAIN Section (4/8) - ................... 33
5-12. Schematic Diagram - MAIN Section (5/8) - ................... 34
5-13. Schematic Diagram - MAIN Section (6/8) - ................... 35
5-14. Schematic Diagram - MAIN Section (7/8) - ................... 36
5-15. Schematic Diagram - MAIN Section (8/8) - ................... 37
5-16. Printed Wiring Board - FL Board - ................................. 38
5-17. Schematic Diagram - FL Board - .................................... 39
5-18. Printed Wiring Boards - KEY Section - .......................... 40
5-19. Schematic Diagram - KEY Section - .............................. 41
5-20. Printed Wiring Board - POWER Board - ........................ 42
5-21. Schematic Diagram - POWER Board - .......................... 43
6.
EXPLODED VIEWS
6-1. Overall
Section
............................................................... 55
6-2. Front Panel Section ......................................................... 56
6-3. Front Boards Section ...................................................... 57
6-4. Chassis
Section
............................................................... 58
6-5. DVD Mechanism Deck Section
(CDM85MB-DVBU102)
................................................
59
7.
ELECTRICAL PARTS LIST
.............................. 60
TABLE OF CONTENTS
SECTION 1
SERVICING NOTES
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)
: LEAD FREE MARK
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 HANDLING THE OPTICAL PICK-UP
BLOCK OR BASE UNIT
The laser diode in the optical pick-up block may suffer electro-
static 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 re
fl
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.
LASER DIODE AND FOCUS SEARCH
1. Open the case and turn POWER on with no disc inserted.
2. Con
fi
rm that the following operation is performed while ob-
serving the objecting lens from the clearance of DVD mecha-
nism deck.
1) Con
fi
rm that laser beam is spread.
2) Up and down motion of the objective lens. (2 times)
ON CLEANING DISCS, DISC/LENS CLEANERS
Do not use cleaning discs or disc/lens cleaners (including wet or
spray types). These may cause the apparatus to malfunction.
IMPORTANT NOTICE
Caution: This system is capable of holding a still video image or on-
screen display image on your television screen inde
fi
nitely. If you leave
the still video image or on-screen display image displayed on your TV
for an extended period of time you risk permanent damage to your tele-
vision screen.
Projection televisions are especially susceptible to this.