Page 1
CONTENTS
1. PRECAUTIONS ------------------------------------------------------------------------\
----------------------------------------- --- 1
1-1 S AF ETY PREC AUTI ONS ------------------------------------------------------------------------\
---------------------------------- 1
1-2 S ER VICING PREC AUTI ONS ------------------------------------------------------------------------\
------------------------------ 2
1-2-1 General Serv ing Pr ecaut ions ------------------------------------------------------------------------\
-------------------- 2
1-2-2 Insulation Che cking Pr ocedur e------------------------------------------------------------------------\
------------------ 3
1-3 ESD PRE CA UTI ONS ------------------------------------------------------------------------\
------------------------------------- 3
2. REFEREN CE IN FORM ATION ------------------------------------------------------------------------\
------------------------ 4
2-1 C OMP ONE NT DESCR IPTIONS------------------------------------------------------------------------\
--------------------------- 4
2-1-1 DVD SANY O HD60 PUH ------------------------------------------------------------------------\
------------------------ 4
2-1-2 DVD Pr ocessor Chip (MTK13 79) and Fr ont-en d I C MT 1336 ------------------------------------------------------ 6
2-1-3 28-Pin, 24-Bit, 192kHz D/A with V olume Cont rol (DA1 196) ---------------------------------------------------- 15
2-1-4 Serial E EPROM, 16 K (2048 x 8) (24C16) ------------------------------------------------------------------------\
---- 17
2-1-5 8M-BIT [1Mx8/512Kx1 6] CMOS FL ASH MEMORY --------------------------------------------------------------- 18
2-1-6 512K X 16 Bit X 2 Banks Synchr onous DRAM (A43L06 16) ------------------------------------------------------- 20
3. PRODUCT SPEC IFICA TIONS ------------------------------------------------------------------------\
------------------------ 23
4.UPGRADI NG SYSTEM AND CH AN GING THE REGI ON CO DE ---------------------------------------------------- 24
5. OPERA TING INSTRU CTION ------------------------------------------------------------------------\
------------------------- 25
MAINT EN ANCE & T RO UB LESHO OT ING ------------------------------------------------------------------------\
------------------ 26
6.DISASSE MBL Y AND REASSEMB LY------------------------------------------------------------------------\
---------------- 28
7.TROUBLES HOOTING ------------------------------------------------------------------------\
---------------------------------- 30
8. ELECTRICAL PART LIST ------------------------------------------------------------------------\
----------------------------- 31
9. BLOCK DIAGRAM ------------------------------------------------------------------------\
-------------------------------------- 38
10. CIRCUIT DIAGRA MS ------------------------------------------------------------------------\
--------------------------------- 40
11. WIRING DIAGR AM ------------------------------------------------------------------------\
------------------------------------ 48
Page 2
1. PRECAUTIONS
1-1 Safety Pr ecautions
1) Before return ing an instrumen t to th e custo mer, always
mak e a safety check of th e entire in stru ment, in clud ing , bu t
not lim ited to , th e fo llo win g item s:
(1) Be su re th at no bu ilt-in protectiv e devices are defectiv e
or have been defeat ed duri ng servi cing.
(1) Pro tectiv e shield s are prov ided to protect bo th th e
technician a nd the custom er. Correctly re place all
missi ng p rotective shi elds, includi ng any re move fo r
servi cing conveni ence.
(2) Whe n re installing t he chassi s a nd/or other
assem bly in the cabinet, be sure to put bac k in place
all p rotectiv e devices, in clud ing , bu t no t limited to ,
no nm etall ic cont rol k nobs, insulating fi sh pa pers ,
adjustm ent a nd c ompartment covers/s hields, an d
isolation resi stor/ capaci tor ne tworks. Do n ot ope rat e
this instrument or perm it it to be operat ed without al l
prot ect ive devi ces correct ly installed and funct ioni ng.
(2) B e sure t hat there a re no cabinet ope ning throug h which
adults or ch ildren m ight be ab le to insert their fing ers
and contact a haza rdous voltage . Suc h ope nings
inclu de, but are no t limite d to, ex cessi vely wid e
cab inet ventilatio n slo ts, an d an im properly fitted
and/or incorrectly secured cabinet back cover .
(3) Leakage Current Hot Ch eck-W ith t he instrum ent
completel y reassem bled , p lug th e AC lin e co rd
directly in to a 12 0V AC outlet. (Do no t u se an
iso latio n tran sfo rmer du ring this test.) Use a leak age
curren t tester or a m eterin g sy ste m th at co mp lies with
Am erican Natio nal Stand ards in stitu te (ANSI) C10 1.1
Leakage.
Cu rren t for App lian ces and un derwriters Lab oratories
(UL) 127 0 (40.7). With the in stru ments AC sw itch
first in th e ON po sitio n and then in th e OFF po sition ,
measure f rom a kn own ea rth ground (m etal wat er pipe,
condu it, etc.) to all exp osed m etal p arts of th e
instrum ent (a ntenna s, handl e brac ket s, m etal cabi nets,
screwhea ds, metallic ove rlays, control s hafts, etc.),
especially and expose d m etal parts that offer a n
electrical return path to the chassis.
Any current m easured m ust not exceed 0.5m A.
Reverse t he i nstrum ent po we r co rd pl ug i n the o utlet
and repeat the test.
AC Leakage Test
An y m easu remen ts no t with in th e li mits sp eci fied
herei n indicate a potential sh ock hazard tha t must be
eli minated b efore return ing th e in strument to the
custom er.
(4) In sulatio n Resistan ce T est Cold C heck-(1) Unplug t he
po we r s uppl y co rd a nd c onnect a jum per wo re
bet ween the two pr on gs of the pl ug. (2) Turn on the
power switch of t he instru ment. (3) M easu re th e
resistance with an ohmmete r bet ween t he jum pere d
AC plug an d all ex po sed m etallic cab inet p arts on th e
instrum ent, such as sc rewheads, a ntenna, cont rol
shafts , ha ndle brac kets, et c. When an expose d
metal lic p art has a return path to th e ch assis, th e
readi ng should be bet ween 1 and 5. 2 mego hm. When
there is no return path to th e ch assis, t he readin g m ust
be in finite. If th e read ing is n ot with in th e li mits
specified, the re is the possi bility of a shock hazard,
and the inst rument m ust be re -pa red a nd rechec ked
before it is retu rned to th e cu sto mer.
1
