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SERVICE MANUAL
MODEL
KV-27S42
KV-27S42
KV-27S46
KV-27S66
KV-27S66
KV-29AL42
KV-29AL42C
KV-29AL66
KV-29AL66C
KV-29SL42
KV-29SL42C
KV-29SL46
KV-29XL42M
MICROFILM
COMMANDER
RM-Y165
RM-Y165
RM-Y167
RM-Y167
RM-Y167
RM-Y165
RM-Y165
RM-Y167
RM-Y167
RM-Y165
RM-Y165
RM-Y167
RM-Y165
KV-29AL66
BA-4D
DEST
CHASSIS NO.
US
SCC-S27H-A
CND
SCC-S28F-A
US
SCC-S27K-A
US
SCC-S27L-A
CND
SCC-S28G-A
E
SCC-S25U-A
E
SCC-S25Y-A
E
SCC-S25T-A
E
SCC-S25V-A
E
SCC-S25W-A
E
SCC-S25S-A
E
SCC-S25X-A
MX
SCC-S26C-A
RM-Y167
®
TRINITRON
CHASSIS
COLOR TV
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Table of Contents
Related Manuals for Sony BA-4D
Summary of Contents for Sony BA-4D
- Page 1 SERVICE MANUAL BA-4D CHASSIS MODEL COMMANDER DEST CHASSIS NO. KV-27S42 RM-Y165 SCC-S27H-A KV-27S42 RM-Y165 SCC-S28F-A KV-27S46 RM-Y167 SCC-S27K-A KV-27S66 RM-Y167 SCC-S27L-A KV-27S66 RM-Y167 SCC-S28G-A KV-29AL42 RM-Y165 SCC-S25U-A KV-29AL42C RM-Y165 SCC-S25Y-A KV-29AL66 RM-Y167 SCC-S25T-A KV-29AL66C RM-Y167 SCC-S25V-A KV-29SL42 RM-Y165 SCC-S25W-A KV-29SL42C...
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Page 2: Warnings And Cautions
DONT LE NUMERO DE PIECE EST INDIQUE DANS LE PRESENT MANUEL OU FOLLOW THESE PROCEDURES WHENEVER CRITICAL DANS DES SUPPLEMENTS PUBLIES PAR SONY. LES REGLAGES DE CIRCUIT COMPONENTS ARE REPLACED OR IMPROPER OPERATION IS DONT L'IMPORTANCE EST CRITIQUE POUR LA SECURITE DU SUSPECTED. - Page 3 KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Display of Standby/Timer LED Flash Count 2 times 4 times 5 times LED ON 0.3 sec. LED OFF LED OFF 0.3 sec. STANDBY/TIMER LED 3 sec. Diagnostic Item Flash Count* +B overcurrent 2 times Vertical deflection stopped 4 times White balance failure 5 times *One flash count is not used for self-diagnostic.
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Page 4: Self-Diagnostic Circuit
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Self-diagnostic Circuit IC301 IC541 IC001 IC003 Y/CHROMA JUNGLE V. OUT SYSTEM MEMORY FROM IK IN IO-BDAT B-DAT I-PROT FROM IC521 HP/PROTECT PIN 7 O-LED IO-SDAT DISPLAY +B overcurrent (OCP) Occurs when an overcurrent on the +B (115V) line is detected by pin 18 of IC301. If the voltage of pin 18 of IC 301 is less than 1V when V.SYNC is more than seven verticals in a period, the unit will automatically turn off. -
Page 5: Circuit Adjustments
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M SECTION 5 CIRCUIT ADJUSTMENTS Use the Remote Commander (RM-Y168) to perform the circuit adjustments in this section. NOTE: Test Equipment Required: • Pattern generator • Frequency counter • Digital multimeter • Audio oscillator 5-1. Setting the Service Adjustment Mode 5-2. -
Page 6: Adjustment Items
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Adjustment Items Service Data Service Data Initial Value Average Data Initial Value Average Data Item Name Name Range Name Name Range HSIZ A_HSIZE 0-63 62 SBAS 0-15 HPOS A_HPOS 0-63 63 STRE 0-15 VBOW A_AFCB 0-15 64 SBAL A1_SUBBAL 0-31 VANG... -
Page 7: A Board Adjustments
KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Feature ID Map 5. Select the item DCOL item and set it to 0. 6. Connect an oscilloscope probe to CN301 pin (RED OUT). 7. Select RDRV with 8. Adjust the value of RDRV with 27S42 25 145 15 235 0 64 1.75 ±... - Page 8 KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M Sub Hue, Sub Color Adjustment (SHUE, SCOL) H. Center Adjustment (HPOS) 1. Input a color-bar signal. Perform this adjustment after performing H. Frequency (Free Run) check. 2. Activate the Service Adjustment Mode. 1. Input a crosshatch signal. 3. Select the DCOL item and set the value to 0. 2.
- Page 9 KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M A BOARD WAVEFORMS A BOARD SCHEMATIC DIAGRAM 1.0 Vp-p (H) 2.0 Vp-p (H) 4.7 Vp-p (H) 3.6 Vp-p (8MHz) 1.0 Vp-p (H) 0.7 Vp-p (H) 0.9 Vp-p (H) 4.0 Vp-p (V) 2.0 Vp-p (H) 0.9 Vp-p (H) 1.7 Vp-p (H) 1.4 Vp-p (V) 1.4 Vp-p (V) 5.5 Vp-p (H)
- Page 10 KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/ 29AL66C/29SL42/29SL42C/29SL46/29XL42M [P in P] [SECOND TUNER, AUDIO AMP] K BOARD (*) MARK VARIANT LIST K BOARD IC VOLTAGE LIST (KV-27S66/29AL42/29AL42C/29AL66/29AL66C ONLY) KV29AL42 KV-29AL66 (KV-27S46/29AL42/29AL42C/29AL66/29AL66C ONLY) IC1400 REF. NO. KV-27S66 KV-29AL42C KV-29AL66C C1401 0.47MF 0.22MF volt COMPONENT SIDE CONDUCTOR SIDE C1402 0.47MF 0.22MF...
- Page 11 KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/29AL66C/ 29SL42/29SL42C/29SL46/29XL42M [RGB DRIVE, VELOCITY MOD.] [RGB DRIVE, CRT DRIVE] [ENERGY START] E BOARD (*) MARK VARIANT LIST (KV-27S42/27S46/27S66/29SL42/29SL42C/29XL42M ONLY) (KV-29AL42/29AL42C/29AL66/29AL66C ONLY) CV BOARD TRANSISTOR CV BOARD IC VOLTAGE LIST VOLTAGE LIST KV-29AL66 KV-29AL66C IC1701 KV-29AL42 Q943 volt KV-29AL42C Q944 KV-29SL42 C BOARD WAVEFORMS Q945...