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Projection Television
Hitachi
50SBX78B, 60SBX78B service manual
t3
1
42
99
99
Download
99 pages, 19.72 Mb
3.
Reception
Impossible
with
Snow
Noise
Main
Picture
I
No
Yes
Yes
Sub
Picture
eception
impossible
with
snow
noise
No
Yes
Yes
u102
Yes
Vcc
(Sv),
BP
(5v),
and
t3
u102
42
Contents
Main
SERVICE MANUAL
CONTENTS
SEPTEMBER 1998 HHEA-MANUFACTURING
SPECIFICATIONS AND PARTS ARE SUBJECTTO CHANGE FOR IMPROVEMENT
PROJECTION COLOR TELEVISION
Page
SAFETY PRECAUTIONS
Page
Page
SERVICING PRECAUTIONS
Page
Page
Leadless Chip Components (surface mount)
Component Removal
Chip Component Installation
How to Replace Flat-IC -Required Tools-
TECHNICAL CAUTIONS
I
SPECIFICATIONS
CIRCUIT PROTECTION
/ 5A125V\
Page
CUSTOMIZED PICTURE AND SOUND ADJUSTMENTS
I
1 .
I I I
I
I
Ill
TV GUIDE PLUS+
w+
SET UP TV GUIDE Plus+ STEP 4
STEP 5 1.
Basic connection for TV GUIDE Plus+ setup with no cable box and no VCR.
SET UP TV GUIDE Plus+ STEP 6
Basic connection for TV GUIDE Plus+ setup with cable box and without VCR.
ff
Cable TV Box
STEP 7
SET UP TV GUIDE Plus+ STEP 8
STEP 9
Basic connection for TV GUIDE Plus+ setup without cable box and with VCR.
VCR #I
SET UP TV GUIDE Plus+
/
STEP 11
END OF SET UP
CAUTIONS WHEN CONNECTING / DISCONNECTING THE HV CONNECTOR
SERVICE ADJUSTMENTS
I-l+1
(1) ;:;
{I
I I
Notes:
NOTE:
Note:
2.2 White balance adjustment
2.3 Sub brightness adjustment
Page
(1) I:;
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I:;
(1) I;;
c:
(9)
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+
i
l-2-J
(1)
(1)
I:; (5)
I:;
2.14.3 Convergence point adjustment
Notes:
2.14.4 Digital Convergence Remote Control
\
A Cl
HITACHI m ?oLQt
Page
Page
1 0
0 c
El
[SIGNAL P.W.B )
3.3 MAIN CHASSIS (Power/Deflection P.W.B.)
q u [I 0
3.4 CPT (R) (G) (B), Focus Pack, Control P.W.B.
0 0
38
0 0 0
\ /ooor
;,Oo--
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TROUBLESHOOTING 1. No Raster and No Power (REPAIR METHOD)
1
No I Yes
How to check DIAGNOSIS LEDs.
+ I
+
1
Yes
2. No Picture
l-k ZJ f
t3
4. Defective Synchronization
1r T
5. Incorrect Color \
(,,,Ell L
6. No Sound
DCU REPAIR TABLE
, ~
I I
h
I ._ .-_
I--
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Page
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Page
Page
Page
Page
Page
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Page
Page
Page
REPLACEMENT PARTS LIST
L
SYMBOL
ABBREVIATIONS Capacitors: Resistors: Semiconductors:
PART NO.
ZiEr
Page
Page
REPLACEMENT PARTS LIST
SYMBOL
PRODUCT
SYMBOL PART PART SYMBOL PART PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION
Page
Page
Page
Page
Page
Page
TRANSISTORS
Page
PRODUCT SERVICE
SYMBOL PART PART SYMBOL PART PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION R022
85
PRODUCT SERVICE
SYMBOL PART PART SYMBOL PART PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION ROP7
86
Page
Page
89
Page
Page
Page
Page
Page
Page
PRODUCT SERVICE
SYMBOL PART PART SYMBOL PART PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION
96
TRANSFORMERS
SWITCHES RY50
REPLACEMENT PARTS LIST
SYMBOL
I
SYMBOL
PRODUCT SERVICE
PART PART PART SYMBOL PART PART NO. NO. DESCRIPTION NO. NO. DESCRIPTION ESR EF05951