Sony Ba 6 Service Manual

 SERVICE MANUAL BA-6 CHASSIS
TRINITRON® COLOR TELEVISION
       MODEL NAME  REMOTE COMMANDER DESTINATION   CHASSIS NO. 
9-965-948-02
KV-27FS100L RM-Y180 US  SCC-S61G-A
KV-27FS100L RM-Y180 CANADA SCC-S59G-A
KV-29FS100L RM-Y180 LATIN NORTH SCC-S60R-A
KV-29FS100L RM-Y180 LATIN SOUTH SCC-S60S-A
HISTORY INFORMATION FOR THE FOLLOWING MANUAL:
ORIGINAL MANUAL ISSUE DATE:  7/2003
 :UPDATED ITEM
REVISION DATE   SUBJECT     
7/2003        No revisions or updates are applicable at this time.
11/2003        Replaced...

 SERVICE MANUAL BA-6 CHASSIS
TRINITRON® COLOR TELEVISION
       MODEL NAME  REMOTE COMMANDER DESTINATION   CHASSIS NO. 
9-965-948-02
KV-27FS100L RM-Y180 US  SCC-S61G-A
KV-27FS100L RM-Y180 CANADA SCC-S59G-A
KV-29FS100L RM-Y180 LATIN NORTH SCC-S60R-A
KV-29FS100L RM-Y180 LATIN SOUTH SCC-S60S-A
Self DiagnosisSupported model
KV-27FS100L RM-Y180  

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KV-27FS100L/29FS100L
TABLE OF CONTENTS
SECTION TITLE   PAGE
Specifications.............................................................................................................................................................................4
Warnings and Cautions..............................................................................................................................................................5
Safety...

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KV-27FS100L/29FS100L
SPECIFICATIONS
Design and specifications are subject to change without notice.
1) 1 Vp-p 75 ohms unbalanced, sync negative 2) Y: 1 Vp-p 75 ohms unbalanced, sync negative C: 0.286 Vp-p (Burst signal), 75 ohms3) Y: 1.0 Vp-p, 75 ohms, sync negative; PB: 0.7 Vp-p, 75 ohms;  PR Vp-p, 75 ohms.4) 500 mVrms (100% modulation), Impedance: 47 kilohms5)  More than 408 mVrms at the maximum volume setting (variable) More than 408 mVrms (fix); Impedance (output): 2 kilohms
Television system...

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KV-27FS100L/29FS100L
WARNINGS AND CAUTIONS
CAUTION
Short circuit the anode of the picture tube and the anode cap to the metal chassis, CRT shield, or carbon painted on the CRT, after 
removing the anode.
WARNING!!
An isolation transformer should be used during any service to avoid possible shock hazard, because of live chassis.  The chassis of 
this receiver is directly connected to the AC power line.
! SAFETY-RELATED COMPONENT WARNING!!
Components identified by shading and ! mark on the schematic...

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KV-27FS100L/29FS100L
SAFETY CHECK-OUT
After correcting the original service problem, perform the following 
safety checks before releasing the set to the customer:
1. Check the area of your repair for unsoldered or poorly soldered 
connections. Check the entire board surface for solder splashes and 
bridges.
2.  Check the interboard wiring to ensure that no wires are “pinched” or 
touching high-wattage resistors.
3.  Check that all control knobs, shields, covers, ground straps, and 
mounting...

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KV-27FS100L/29FS100L
Detected Symptoms
SELF-DIAGNOSTIC FUNCTION
*If a +B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.  The symptom that is diagnosed first by the 
mircrocontroller is displayed on the screen.
**Refer to Screen (G2) Adjustments in Section 2-4. of this manual.
Display of Standby/Timer LED Flash Count
 
 Diagnostic Item   Flash Count*
 +B Overcurrent   2 times
 I-Prot     4 times
 IK (AKB)     5 times
 *One flash count is not used for...

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KV-27FS100L/29FS100L
Self-Diagnostic Screen Display
For errors with symptoms such as “power sometimes shuts off” or “screen sometimes goes out” that cannot be confirmed, it is possible to bring up past 
occurrences of failure on the screen for confirmation.
To Bring Up Screen Test
In standby mode, press buttons on the Remote Commander sequentially, in rapid succession, as shown below:
Display   Channel 5       Sound Volume -  Power ON
Self-Diagnostic Screen Display
Numeral “0” means that no fault...

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KV-27FS100L/29FS100L
1-1. REAR COVER REMOVAL
SECTION 1:  DISASSEMBLY
1-2. CHASSIS ASSEMBLY REMOVAL1-3. SERVICE POSITION
Chassis AssemblyClaw
2 Screws +BVTP 4X16 TYPE2 TT(B)
Rear Cover
A Board
CV Board
1 Press on catch tab to release A Board.
2 Disconnect cables as needed to allow A Board to be removed.
 
D BoardHS Board
2 Screws +BVTP 4X16 TYPE2 TT(B)
4 Screws +BVTP 4X16 TYPE2 TT(B)
2 Screws +BVTP 4X16 TYPE2 TT(B)
5 Screws +BVTP 3X12 TYPE2 TT(B)
V Board 

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KV-27FS100L/29FS100L
1. Discharge the anode of the CRT and remove the anode cap.
2. Unplug all interconnecting leads from the deflection yoke, neck 
assembly, degaussing coils and CRT grounding strap.
3. Remove the CV Board from the CRT.
4.  Remove the chassis assembly.
5. Loosen the neck assembly fixing screw and remove.
6. Loosen the deflection yoke fixing screw and remove.
7. Place the set with the CRT face down on a cushion and remove 
the degaussing coil holders.
8. Remove the degaussing...