The manual was complete and extremely helpful in both diagnosing the problem I was having as well as fixing it. Excellent quality. I will getting additional manuals in the future.
Exactly the JVC service manual and schematics that I was looking for - delivered just hours after order. Will do business again!
Text excerpt from page 2 (click to view)
KL-37W2/37W2K KL-50W2/50W2K/50W2U
RM-838 RM-838
SECTION 3.
CIRCUIT ADJUSTMENT
Addition of CU Board Adjustment 3-9. CU BOARD ADJUSTMENT
� SHADING ADJUSTMENT RV5801 BLUE RV5802 GREEN S5802 BLUE AMP / ATT S5803 GREEN AMP / ATT � CORNER ADJUSTMENT RV5811 BLUE UP LEFT RV5812 BLUE UP RIGHT RV5813 BLUE DOWN LEFT RV5814 BLUE RV5815 GREEN RV5816 GREEN RV5817 GREEN RV5818 GREEN S5804 S5808 BLUE GREEN DOWN RIGHT UP LEFT UP RIGHT DOWN LEFT DOWN RIGHT AMP / ATT AMP / ATT CU Board (Component Side)
LEFT GS BS DN UP BLUE UP RIGHT DN DN LEFT GREEN UP RIGHT UP DN
RV5802 RV5801
RV5813
RV5811
RV5812
RV5814
RV5817
RV5815
RV5816 AMP
RV5818 ATT
AMP
S5803
B
S5802 AMP
S5804
B
ATT
ATT
G
SHADING CORNER ATT
G
CN5801 AMP
S5808
Fig. 1
(1) Preparation 1) Input flat 50 white signal. 2) Change all switches (S5802 ~ S5804, S5808) to AMP side as Fig. 1. 3) Turn all volumes (RV5801, RV5802, RV5811 ~ RV5818) clockwise to minimum. (2) Shading Adjustment 1) Comparing the colour on the left side of picture with that at the center, perform the adjustment with the following algorithm.
Check left side color tendency.
Reddish ?
Yes
No
Greenish ?
Yes
No
Adjust green with RV5802.
Switch S5803 to ATT side and adjust green with RV5802.
Switch S5802 to ATT side and adjust blue with RV5801.
No
Blueish ?
Yes
No
Yellowish ?
Yes
Yellowish ?
Yes
No
Switch S5802 to ATT side and adjust blue with RV5801.
Adjust blue with RV5801.
Switch S5802 to AMP side and adjust blue with RV5801.
