Sony SLV-E830B Service Manual page 2

FEATURE DIFFERENCE
MODEL NAME (SLV-)
SAFETY SECAM (REC/PB)
ME-SECAM (REC/PB)
ACS (¢: ACA)
TUNER (BTF-)
SYSTEM 1
STEREO
SYSTEM 2
STEREO
RF OUT SYS
REMOTE COMMANDER (RMT-)
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK ! OR DOTTED LINE WITH
MARK ! ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS
LIST ARE CRITICAL TO SAFE OPERATION. REPLACE THESE
COMPONENTS WITH SONY PARTS WHOSE PART NUMBERS
APPEAR AS SHOWN IN THIS MANUAL OR IN SUPPLEMENTS
PUBLISHED BY SONY.
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 contact high-wattage resistors.
3. Look for unauthorized replacement parts, particularly
transistors, that were installed during a previous repair. Point
them out to the customer and recommend their replacement.
E830VC1 E830VC2
¢
3WC402
BG
ZWEI
G
V224
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
E830NP
¢ ®
WC411
BG BG
ZWEI N/Z
G G
V224 V224
4. Look for parts which, through functioning, show obvious signs
of deterioration. Point them out to the customer and
recommend their replace-ment.
5. Check the B+ voltage to see it is at the values specified.
6. Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270˚C
during repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
— 2 —
E830B
®/®
G/®
®
3WC443
L
NI
BG
ZWEI
L/G
V224B