Sony KD-34XBR2 Training Manual page 106

Board Circuits
CRT (RGB) Driver
A Standby Power Supply
G
Primary Power Supply
(Sub 6.5V, 11V, 7V.)
Secondary Power
Supply (135V, 22V,
19V, 15V)
Protection latch circuit
Prologic Decoding
K
Audio Output
Amplifiers
Tone Control
Pwr On/Off/Ch change
mute
DRC for line doubling
Q Box
MID for twin pictures
(Qi,
DTV Tuner and A/V
QM
process
Bds)
Audio/Video
U
Input/output panel
Velocity Modulation
V
* Service Mode access using remote buttons: Display, #5, Vol +. Power. See the Convergence Adjustment
Overview chapter for more information on the service mode.
** After replacing the B board or Q box you will find that the plugs to CN8801 and CN8601 are the same. Cables
from Q box to CN004 and CN005 should cross. See Figure 23-1.
Fuses
R3024-IC3002-
F6001-10A-main
R6099-Prim PS
R6041-Sec PS
PS6101-04=135V,
+22V, +15V lines
R6057-Stby PS
R6073, R6081-2-
Pri & Sec PS
sustaining volt.
None
None
None
None
103
23. RA-5A PJ Chassis Board Replacement
Zeners
D3001-33V – tuner
D6016=AC input OVP
D6121, D6126=15V OVP,
22VOCP
D6133=Sub 6.5V OVP
S Data protect D2301,
D2303, D2305
S Clk protect D2302,
D2304, D2306
Surround spk protection-
D2602-5
Center Spk protection-
D2619-20
Main spk protection-
D2614-17
Var/Fixed output
protection D2624-31
D7803-3.9V=Reg for write
PLL IC7805 (QM Bd)
None
None
After board
replacement
Transplant memory
No adjustments
No adjustments
Enter the service
mode and check the
model ID category
items to see if they
agree with the service
manual. ** see note.
No adjustments
No adjustments