Hitachi 50SBX78B, 60SBX78B 6. No Sound

6. No Sound

OV or lower

26V E997

+26V Power Supply

L I

Yes

Check the I ‘C bus (SCL, SDA)

Yes

Check IS12

Yes

No IYOl

(1) Check the l*C bus (SCL3, SDA3)

u101

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:; t2 - Cl II I I:; (1) I;; c: (9) ! _ - $$ + 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-- \ \ 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-- Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 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